docs: Update jwt docs [skip ci]

The shared_oauth_client_credentials fixture was using Dynamic Client
Registration which doesn't support Nextcloud's allowed_scopes parameter.
This caused tokens to lack proper scope configuration, resulting in empty
tool lists when the server validated scopes.

Changes:
1. Updated shared_oauth_client_credentials to use occ oidc:create with
   allowed_scopes="openid profile email nc:read nc:write"
2. Created opaque token client (not JWT) for port 8001 compatibility
3. Enhanced _create_oauth_client_with_scopes to support both JWT and
   opaque token types via token_type parameter

This ensures:
- Regular OAuth tests (port 8001) get opaque tokens with proper scopes
- JWT OAuth tests (port 8002) get JWT tokens with embedded scopes
- Both token types have allowed_scopes configured on the OAuth client

Fixes test_mcp_oauth_server_connection which was getting empty tool list

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/release.yml

@@ -18,12 +18,16 @@ jobs:
       contents: read
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@2ddd2b9cb38ad8efd50337e8ab201519a34c9f24 # v7
       - name: Install Python 3.11
         run: uv python install 3.11
       - name: Build
         run: uv build
+      - name: Smoke test (wheel)
+        run: uv run --isolated --no-project --with dist/*.whl nextcloud-mcp-server --help
+      - name: Smoke test (source distribution)
+        run: uv run --isolated --no-project --with dist/*.tar.gz nextcloud-mcp-server --help
       - name: Publish
         run: uv publish

.github/workflows/test.yml

@@ -25,6 +25,25 @@ jobs:
 
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          submodules: 'true'
+
+
+      ###### Required to build OIDC App ######
+
+      - name: Set up php 8.4
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.4
+          coverage: none
+
+      - name: Install OIDC app composer dependencies
+        run: |
+          cd third_party/oidc
+          composer install --no-dev
+
+      ###### Required to build OIDC App ######
+
 
       - name: Run docker compose
         uses: hoverkraft-tech/compose-action@3846bcd61da338e9eaaf83e7ed0234a12b099b72 # v2.4.1
@@ -62,4 +81,4 @@ jobs:
           NEXTCLOUD_USERNAME: "admin"
           NEXTCLOUD_PASSWORD: "admin"
         run: |
-          uv run pytest -v --log-level=INFO
+          uv run pytest -v --log-cli-level=INFO

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "oidc"]
+	path = third_party/oidc
+	url = https://github.com/cbcoutinho/oidc
+[submodule "third_party/oidc"]
+	path = third_party/oidc
+	url = https://github.com/cbcoutinho/oidc

CHANGELOG.md

@@ -1,3 +1,9 @@
+## v0.17.1 (2025-10-20)
+
+### Fix
+
+- **caldav**: Fix caldav search() due to missing todos
+
 ## v0.17.0 (2025-10-19)
 
 ### Feat

CLAUDE.md

@@ -252,3 +252,15 @@ uv run pytest tests/server/test_oauth*.py -v
 - **`pyproject.toml`** - Python project configuration using uv for dependency management
 - **`.env`** (from `env.sample`) - Environment variables for Nextcloud connection
 - **`docker-compose.yml`** - Complete development environment with Nextcloud + database
+
+## Integration testing with docker
+
+### Nextcloud
+
+- The `app` container is running nextcloud.
+- Use `docker compose exec app php occ ...` to get a list of available commands
+
+### Mariadb
+
+- The `db` container is running mariadb
+- Use `docker compose exec db mariadb -u [user] -p [password] [database]` to execute queries. Check the docker-compose file for credentials

README.md

@@ -7,7 +7,9 @@
 The Nextcloud MCP (Model Context Protocol) server allows Large Language Models like Claude, GPT, and Gemini to interact with your Nextcloud data through a secure API. Create notes, manage calendars, organize contacts, work with files, and more - all through natural language.
 
 > [!NOTE]
-> **Nextcloud has two ways to enable AI access:** Nextcloud provides [Context Agent](https://github.com/nextcloud/context_agent), an AI agent backend that powers the [Assistant](https://github.com/nextcloud/assistant) app and allows AI to interact with Nextcloud apps like Calendar, Talk, and Contacts. Context Agent runs as an ExApp inside Nextcloud and also exposes an MCP server endpoint for external LLMs. This project (Nextcloud MCP Server) is a **dedicated standalone MCP server** designed specifically for external MCP clients like Claude Code and IDEs, with deep CRUD operations and OAuth support.
+> **Nextcloud has two ways to enable AI access:** Nextcloud provides [Context Agent](https://github.com/nextcloud/context_agent), an AI agent backend that powers the [Assistant](https://github.com/nextcloud/assistant) app and allows AI to interact with Nextcloud apps like Calendar, Talk, and Contacts. Context Agent runs as an ExApp inside Nextcloud and also _[exposes an MCP server](https://docs.nextcloud.com/server/stable/admin_manual/ai/app_context_agent.html#using-nextcloud-mcp-server)_ for external MCP clients.
+>
+> This project (Nextcloud MCP Server) is a **dedicated standalone MCP server** designed specifically for external MCP clients like Claude Code and IDEs, with deep CRUD operations and OAuth support. It does not require any additional AI-features to be enabled in Nextcloud beyond the apps that you intend to interact with.
 
 ### High-level Comparison: Nextcloud MCP Server vs. Nextcloud AI Stack
 

app-hooks/post-installation/00-setup-trusted-domains.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -euox pipefail
+
+php /var/www/html/occ config:system:set trusted_domains 2 --value=host.docker.internal

app-hooks/post-installation/10-install-calendar-app.sh

@@ -6,7 +6,7 @@ echo "Installing and configuring Calendar app..."
 
 # Enable calendar app
 php /var/www/html/occ app:enable calendar
-php /var/www/html/occ app:enable --force tasks # Not currently supported on 32
+php /var/www/html/occ app:enable tasks
 
 # Wait for calendar app to be fully initialized
 echo "Waiting for calendar app to initialize..."

app-hooks/post-installation/10-install-oidc-app.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+set -euox pipefail
+
+echo "Installing and configuring OIDC app for testing..."
+
+# Check if development OIDC app is mounted at /opt/apps/oidc
+if [ -d /opt/apps/oidc ]; then
+    echo "Development OIDC app found at /opt/apps/oidc"
+
+    # Remove any existing OIDC app in custom_apps (from app store or old symlink)
+    if [ -e /var/www/html/custom_apps/oidc ]; then
+        echo "Removing existing OIDC in custom_apps..."
+        rm -rf /var/www/html/custom_apps/oidc
+    fi
+
+    # Create symlink from custom_apps to the mounted development version
+    # Per Nextcloud docs: apps outside server root need symlinks in server root
+    echo "Creating symlink: custom_apps/oidc -> /opt/apps/oidc"
+    ln -sf /opt/apps/oidc /var/www/html/custom_apps/oidc
+
+    echo "Enabling OIDC app from /opt/apps (development mode via symlink)"
+    php /var/www/html/occ app:enable oidc
+elif [ -d /var/www/html/custom_apps/oidc ]; then
+    echo "OIDC app directory found in custom_apps (already installed)"
+    php /var/www/html/occ app:enable oidc
+else
+    echo "OIDC app not found, installing from app store..."
+    php /var/www/html/occ app:install oidc
+    php /var/www/html/occ app:enable oidc
+fi
+
+# Configure OIDC Identity Provider with dynamic client registration enabled
+php /var/www/html/occ config:app:set oidc dynamic_client_registration --value='true'
+php /var/www/html/occ config:app:set oidc proof_key_for_code_exchange --value=true --type=boolean
+
+echo "OIDC app installed and configured successfully"

app-hooks/post-installation/10-install-user_oidc-app.sh

@@ -2,21 +2,12 @@
 
 set -euox pipefail
 
-echo "Installing and configuring OIDC apps for testing..."
-
-# Enable the OIDC Identity Provider app
-php /var/www/html/occ app:enable oidc
+echo "Installing and configuring user_oidc app for testing..."
 
 # Enable the user_oidc app (OIDC client for bearer token validation)
 php /var/www/html/occ app:enable user_oidc
 
-patch -u /var/www/html/custom_apps/user_oidc/lib/User/Backend.php -i /docker-entrypoint-hooks.d/post-installation/0001-Fix-Bearer-token-authentication-causing-session-logo.patch
-
-# Configure OIDC Identity Provider with dynamic client registration enabled
-php /var/www/html/occ config:app:set oidc dynamic_client_registration --value='true'
-php /var/www/html/occ config:app:set oidc proof_key_for_code_exchange --value=true --type=boolean
-
 # Configure user_oidc to validate bearer tokens from the OIDC Identity Provider
 php /var/www/html/occ config:system:set user_oidc oidc_provider_bearer_validation --value=true --type=boolean
 
-echo "OIDC apps installed and configured successfully"
+patch -u /var/www/html/custom_apps/user_oidc/lib/User/Backend.php -i /docker-entrypoint-hooks.d/post-installation/0001-Fix-Bearer-token-authentication-causing-session-logo.patch

docker-compose.yml

@@ -21,7 +21,7 @@ services:
     restart: always
 
   app:
-    image: docker.io/library/nextcloud:32.0.0@sha256:3e70e4dfe882ef44738fdc30d9896fb07c12febb27c4a1177e3d63dc0004a0b4
+    image: docker.io/library/nextcloud:32.0.0@sha256:4fbd72f05b5e6b82e078542b6cb2ecf021d2f8b5045454ffa7f4e080e488b375
     restart: always
     ports:
       - 0.0.0.0:8080:80
@@ -31,6 +31,9 @@ services:
     volumes:
       - nextcloud:/var/www/html
       - ./app-hooks/post-installation:/docker-entrypoint-hooks.d/post-installation:ro
+      # Mount OIDC development directory outside /var/www/html to avoid rsync conflicts
+      # The post-installation hook will register /opt/apps as an additional app directory
+      - ./third_party/oidc:/opt/apps/oidc:ro
     environment:
       - NEXTCLOUD_TRUSTED_DOMAINS=app
       - NEXTCLOUD_ADMIN_USER=admin
@@ -71,13 +74,37 @@ services:
       - 127.0.0.1:8001:8001
     environment:
       - NEXTCLOUD_HOST=http://app:80
-      - NEXTCLOUD_MCP_SERVER_URL=http://127.0.0.1:8001
-      - NEXTCLOUD_PUBLIC_ISSUER_URL=http://127.0.0.1:8080
-      # No USERNAME/PASSWORD - will use OAuth
+      - NEXTCLOUD_MCP_SERVER_URL=http://localhost:8001
+      - NEXTCLOUD_PUBLIC_ISSUER_URL=http://localhost:8080
+      - NEXTCLOUD_OIDC_CLIENT_STORAGE=/app/.oauth/nextcloud_oauth_client.json
+      - NEXTCLOUD_OIDC_SCOPES=openid profile email nc:read nc:write
+      # No USERNAME/PASSWORD - will use OAuth with Dynamic Client Registration
+      # Client credentials will be registered and stored in volume on first startup
     volumes:
       - oauth-client-storage:/app/.oauth
 
+  mcp-oauth-jwt:
+    build: .
+    command: ["--transport", "streamable-http", "--oauth", "--port", "8002"]
+    restart: always
+    depends_on:
+      - app
+    ports:
+      - 127.0.0.1:8002:8002
+    environment:
+      - NEXTCLOUD_HOST=http://app:80
+      - NEXTCLOUD_MCP_SERVER_URL=http://localhost:8002
+      - NEXTCLOUD_PUBLIC_ISSUER_URL=http://localhost:8080
+      - NEXTCLOUD_OIDC_CLIENT_STORAGE=/app/.oauth-jwt/nextcloud_oauth_client.json
+      - NEXTCLOUD_OIDC_SCOPES=openid profile email nc:read nc:write
+      - NEXTCLOUD_OIDC_TOKEN_TYPE=jwt
+      # No USERNAME/PASSWORD - will use OAuth with Dynamic Client Registration (DCR)
+      # Client will be registered with token_type=JWT on first startup
+    volumes:
+      - oauth-jwt-client-storage:/app/.oauth-jwt
+
 volumes:
   nextcloud:
   db:
   oauth-client-storage:
+  oauth-jwt-client-storage:

docs/jwt-oauth-reference.md

@@ -0,0 +1,899 @@
+# JWT OAuth Reference - Nextcloud MCP Server
+
+**Last Updated:** 2025-10-23
+**Status:** Production Ready
+
+## Table of Contents
+
+- [Overview](#overview)
+- [JWT vs Opaque Tokens](#jwt-vs-opaque-tokens)
+- [Scope-Based Authorization](#scope-based-authorization)
+- [Configuration](#configuration)
+- [Architecture](#architecture)
+- [Testing](#testing)
+- [Troubleshooting](#troubleshooting)
+- [Production Deployment](#production-deployment)
+
+---
+
+## Overview
+
+The Nextcloud MCP Server supports OAuth authentication with both **JWT** (RFC 9068) and **opaque** tokens. JWT tokens are recommended for production use as they enable:
+
+- **Faster validation** - No HTTP call needed for token verification
+- **Direct scope extraction** - Scopes embedded in token claims
+- **Dynamic tool filtering** - Users only see tools they have permission to use
+- **Signature verification** - Cryptographic validation using JWKS
+
+### Key Features
+
+- ✅ **JWT Token Support** - RFC 9068 compliant access tokens with RS256 signatures
+- ✅ **Custom Scopes** - `nc:read` and `nc:write` for read/write access control
+- ✅ **Dynamic Tool Filtering** - Tools filtered based on user's token scopes
+- ✅ **Scope Challenges** - RFC-compliant `WWW-Authenticate` headers for insufficient scopes
+- ✅ **Protected Resource Metadata** - RFC 8959 endpoint for scope discovery
+- ✅ **Backward Compatible** - BasicAuth mode bypasses all scope checks
+
+### Supported Scopes
+
+| Scope | Description | Tool Count |
+|-------|-------------|------------|
+| `nc:read` | Read-only access to Nextcloud data | 36 tools |
+| `nc:write` | Write access to create/modify/delete data | 54 tools |
+
+All MCP tools (90 total) require at least one of these scopes. Standard OIDC scopes (`openid`, `profile`, `email`) are also supported.
+
+---
+
+## JWT vs Opaque Tokens
+
+The Nextcloud OIDC app supports two token formats, configured per-client:
+
+### JWT Tokens (Recommended)
+
+**Advantages:**
+- ✅ Fast validation - JWT signature verified locally using JWKS
+- ✅ Direct scope extraction from `scope` claim in payload
+- ✅ Standard approach (RFC 9068)
+- ✅ No additional HTTP calls for validation
+
+**Disadvantages:**
+- ⚠️ Larger size (~800-1200 chars vs 72 chars for opaque)
+- ⚠️ Token payload visible to client (not an issue for access tokens)
+
+**Token Structure:**
+```json
+{
+  "header": {
+    "typ": "at+JWT",
+    "alg": "RS256",
+    "kid": "..."
+  },
+  "payload": {
+    "iss": "http://localhost:8080",
+    "sub": "admin",
+    "aud": "client_id",
+    "exp": 1234567890,
+    "iat": 1234567890,
+    "scope": "openid profile email nc:read nc:write",
+    "client_id": "...",
+    "jti": "..."
+  }
+}
+```
+
+### Opaque Tokens
+
+**Advantages:**
+- ✅ Smaller size (72 characters)
+- ✅ No payload visible to client
+- ✅ Direct scope access via introspection endpoint (RFC 7662)
+
+**Disadvantages:**
+- ❌ Higher latency - Requires HTTP call to introspection endpoint
+- ❌ Slower than JWT signature verification (network roundtrip)
+
+**Validation Method:**
+Opaque tokens are validated using the **introspection endpoint** (`/apps/oidc/introspect`), which returns:
+- Token active status
+- Scope claim (direct access, no inference needed)
+- User information (`sub`, `username`)
+- Token metadata (`exp`, `iat`, `client_id`)
+
+Falls back to userinfo endpoint only if introspection is unavailable.
+
+**When to Use:**
+- Use **JWT tokens** for production (better performance, no HTTP call)
+- Use **opaque tokens** for compatibility with clients that don't support JWT
+
+---
+
+## Scope-Based Authorization
+
+### Scope Definitions
+
+The MCP server uses **coarse-grained scopes** for simplicity:
+
+| Scope | Operations | Examples |
+|-------|------------|----------|
+| `nc:read` | Read-only access | Get notes, search files, list calendars, read contacts |
+| `nc:write` | Write operations | Create notes, update events, delete files, modify contacts |
+
+### Standard OIDC Scopes
+
+| Scope | Description | Required |
+|-------|-------------|----------|
+| `openid` | OIDC authentication | Yes |
+| `profile` | User profile information | Recommended |
+| `email` | Email address | Recommended |
+
+### Recommended Configurations
+
+**Full Access:**
+```
+openid profile email nc:read nc:write
+```
+
+**Read-Only:**
+```
+openid profile email nc:read
+```
+
+**No Custom Scopes (OIDC only):**
+```
+openid profile email
+```
+
+### Implementation
+
+All 90 MCP tools are decorated with scope requirements:
+
+```python
+@mcp.tool()
+@require_scopes("nc:read")
+async def nc_notes_get_note(note_id: int, ctx: Context):
+    """Get a note by ID (requires nc:read scope)"""
+    ...
+
+@mcp.tool()
+@require_scopes("nc:write")
+async def nc_notes_create_note(title: str, content: str, ctx: Context):
+    """Create a note (requires nc:write scope)"""
+    ...
+```
+
+**Coverage:**
+- ✅ 36 read tools decorated with `@require_scopes("nc:read")`
+- ✅ 54 write tools decorated with `@require_scopes("nc:write")`
+- ✅ 90/90 tools covered (100%)
+
+### Dynamic Tool Filtering
+
+The MCP server implements **dynamic tool filtering** - users only see tools they have permission to use:
+
+**JWT with `nc:read` only:**
+- `list_tools()` returns 36 read-only tools
+- Write tools are hidden from the tool list
+
+**JWT with `nc:write` only:**
+- `list_tools()` returns 54 write-only tools
+- Read tools are hidden from the tool list
+
+**JWT with both scopes:**
+- `list_tools()` returns all 90 tools
+
+**JWT with no custom scopes:**
+- `list_tools()` returns 0 tools (all require `nc:read` or `nc:write`)
+
+**BasicAuth mode:**
+- `list_tools()` returns all 90 tools (no filtering)
+
+### Scope Challenges
+
+When a tool is called without required scopes, the server returns a `403 Forbidden` response with a `WWW-Authenticate` header:
+
+```http
+HTTP/1.1 403 Forbidden
+WWW-Authenticate: Bearer error="insufficient_scope",
+                  scope="nc:write",
+                  resource_metadata="http://server/.well-known/oauth-protected-resource"
+```
+
+This enables **step-up authorization** - clients can detect missing scopes and trigger re-authentication to obtain additional permissions.
+
+### Protected Resource Metadata (PRM)
+
+The server implements RFC 8959's Protected Resource Metadata endpoint:
+
+**Endpoint:** `GET /.well-known/oauth-protected-resource`
+
+**Response:**
+```json
+{
+  "resource": "http://localhost:8002",
+  "scopes_supported": ["nc:read", "nc:write"],
+  "authorization_servers": ["http://localhost:8080"],
+  "bearer_methods_supported": ["header"],
+  "resource_signing_alg_values_supported": ["RS256"]
+}
+```
+
+This allows OAuth clients to discover supported scopes before requesting authorization.
+
+---
+
+## Configuration
+
+### Docker Services
+
+The development environment includes three MCP server variants:
+
+| Service | Port | Auth Type | Token Type | Use Case |
+|---------|------|-----------|------------|----------|
+| `mcp` | 8000 | BasicAuth | N/A | Development, testing |
+| `mcp-oauth` | 8001 | OAuth | Opaque | Standard OAuth flows |
+| `mcp-oauth-jwt` | 8002 | OAuth | JWT | Production, JWT testing |
+
+### JWT Service Configuration
+
+The `mcp-oauth-jwt` service uses **Dynamic Client Registration (DCR)** by default:
+
+**Default Configuration (DCR):**
+```yaml
+mcp-oauth-jwt:
+  build: .
+  command: ["--transport", "streamable-http", "--oauth", "--port", "8002"]
+  ports:
+    - 127.0.0.1:8002:8002
+  environment:
+    - NEXTCLOUD_HOST=http://app:80
+    - NEXTCLOUD_MCP_SERVER_URL=http://localhost:8002
+    - NEXTCLOUD_PUBLIC_ISSUER_URL=http://localhost:8080
+    - NEXTCLOUD_OIDC_SCOPES=openid profile email nc:read nc:write
+    - NEXTCLOUD_OIDC_TOKEN_TYPE=jwt
+  volumes:
+    - ./oauth-storage:/app/.oauth  # Optional: persist DCR credentials
+```
+
+**With Pre-Configured Credentials:**
+```yaml
+mcp-oauth-jwt:
+  build: .
+  command: ["--transport", "streamable-http", "--oauth", "--port", "8002"]
+  ports:
+    - 127.0.0.1:8002:8002
+  environment:
+    - NEXTCLOUD_HOST=http://app:80
+    - NEXTCLOUD_MCP_SERVER_URL=http://localhost:8002
+    - NEXTCLOUD_PUBLIC_ISSUER_URL=http://localhost:8080
+    - NEXTCLOUD_OIDC_CLIENT_ID=<your_client_id>      # Skips DCR
+    - NEXTCLOUD_OIDC_CLIENT_SECRET=<your_client_secret>  # Skips DCR
+    - NEXTCLOUD_OIDC_TOKEN_TYPE=jwt
+```
+
+**Key Points:**
+- **No credentials needed** - DCR automatically registers the client on first start
+- **Credentials persist** - Saved to `.nextcloud_oauth_client.json` and reused
+- **JWT tokens** - Set `TOKEN_TYPE=jwt` for better performance
+- **Pre-configured credentials** - Providing `CLIENT_ID`/`CLIENT_SECRET` skips DCR
+
+### Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `NEXTCLOUD_HOST` | Nextcloud base URL | `http://localhost:8080` |
+| `NEXTCLOUD_MCP_SERVER_URL` | MCP server external URL for OAuth callbacks | (required in OAuth mode) |
+| `NEXTCLOUD_PUBLIC_ISSUER_URL` | Public issuer URL for JWT validation | (uses `NEXTCLOUD_HOST`) |
+| `NEXTCLOUD_OIDC_CLIENT_ID` | Pre-configured OAuth client ID | (optional - uses DCR if unset) |
+| `NEXTCLOUD_OIDC_CLIENT_SECRET` | Pre-configured OAuth client secret | (optional - uses DCR if unset) |
+| `NEXTCLOUD_OIDC_CLIENT_STORAGE` | Path to persist DCR-registered credentials | `.nextcloud_oauth_client.json` |
+| `NEXTCLOUD_OIDC_SCOPES` | Space-separated scopes to request | `"openid profile email nc:read nc:write"` |
+| `NEXTCLOUD_OIDC_TOKEN_TYPE` | Token format: `"jwt"` or `"Bearer"` | `"Bearer"` |
+
+### Dynamic Client Registration (DCR)
+
+The MCP server supports **automatic OAuth client registration** using the OIDC Discovery registration endpoint. This eliminates the need for manual client creation in most cases.
+
+**How It Works:**
+
+When the MCP server starts in OAuth mode, it follows this **three-tier credential loading strategy**:
+
+```
+1. Environment Variables (Highest Priority)
+   ├─ NEXTCLOUD_OIDC_CLIENT_ID
+   └─ NEXTCLOUD_OIDC_CLIENT_SECRET
+
+2. Storage File (Second Priority)
+   └─ NEXTCLOUD_OIDC_CLIENT_STORAGE (.nextcloud_oauth_client.json)
+
+3. Dynamic Client Registration (Automatic Fallback)
+   ├─ Discovers registration endpoint from /.well-known/openid-configuration
+   ├─ Registers new client with requested scopes and token type
+   ├─ Saves credentials to storage file for future use
+   └─ Client credentials persist across restarts
+```
+
+**Configuration:**
+
+DCR automatically configures the client based on environment variables:
+
+```bash
+# Minimal DCR configuration (no credentials needed!)
+export NEXTCLOUD_HOST=http://localhost:8080
+export NEXTCLOUD_MCP_SERVER_URL=http://localhost:8000
+export NEXTCLOUD_OIDC_SCOPES="openid profile email nc:read nc:write"
+export NEXTCLOUD_OIDC_TOKEN_TYPE=jwt  # or "Bearer" for opaque tokens
+```
+
+**Credential Storage:**
+
+- Registered credentials are saved to `NEXTCLOUD_OIDC_CLIENT_STORAGE` (default: `.nextcloud_oauth_client.json`)
+- File has restrictive permissions (0600 - owner read/write only)
+- Credentials are reused on subsequent starts (no re-registration needed)
+- Storage file is checked for expiration (auto-regenerates if expired)
+
+**Format:**
+```json
+{
+  "client_id": "XBd2xqIisu3Kswg39Ub4BUhC36PEYjwwivx3G5nZdDgigvwKXrTHozs7m9DeoLSY",
+  "client_secret": "xNKcy0qpUSau36T60pGGdb03pMEVLXtqykxjK8YkDpoNxNcZ4ClyAT3IAEse2AKT",
+  "client_id_issued_at": 1761097039,
+  "client_secret_expires_at": 2076457039,
+  "redirect_uris": ["http://localhost:8000/oauth/callback"]
+}
+```
+
+**Benefits:**
+- ✅ Zero-configuration OAuth setup
+- ✅ Automatic credential management
+- ✅ Supports both JWT and opaque tokens
+- ✅ Credentials persist across container restarts
+- ✅ Automatic re-registration if credentials expire
+- ✅ Properly sets `allowed_scopes` for JWT token validation
+
+### Manual Client Creation
+
+Manual client creation is **optional** but may be preferred when:
+- You want explicit control over client configuration
+- You're deploying to production environments with strict security policies
+- You need to pre-provision OAuth clients before deployment
+
+**Create Client via OCC Command:**
+
+```bash
+docker compose exec app php occ oidc:create \
+  --token_type=jwt \
+  --allowed_scopes="openid profile email nc:read nc:write" \
+  "Nextcloud MCP Server" \
+  "http://localhost:8000/oauth/callback"
+```
+
+**Output:**
+```json
+{
+  "client_id": "XBd2xqIisu3Kswg39Ub4BUhC36PEYjwwivx3G5nZdDgigvwKXrTHozs7m9DeoLSY",
+  "client_secret": "xNKcy0qpUSau36T60pGGdb03pMEVLXtqykxjK8YkDpoNxNcZ4ClyAT3IAEse2AKT",
+  "token_type": "jwt",
+  "allowed_scopes": "openid profile email nc:read nc:write"
+}
+```
+
+**Configure MCP Server with Pre-Configured Credentials:**
+
+```bash
+# Option 1: Environment variables (highest priority)
+export NEXTCLOUD_OIDC_CLIENT_ID="<client_id>"
+export NEXTCLOUD_OIDC_CLIENT_SECRET="<client_secret>"
+export NEXTCLOUD_OIDC_TOKEN_TYPE="jwt"
+
+# Option 2: Storage file (second priority)
+# Save the JSON response to .nextcloud_oauth_client.json
+# Server will automatically load it on startup
+```
+
+When credentials are provided via environment variables or storage file, **DCR is skipped**.
+
+---
+
+## Architecture
+
+### Component Overview
+
+```
+┌──────────────────┐     OAuth Flow      ┌──────────────────┐
+│  OAuth Client    │<─────────────────────>│ Nextcloud OIDC  │
+│  (Claude, etc)   │                       │ Server           │
+└────────┬─────────┘                       └────────┬─────────┘
+         │                                          │
+         │ JWT Access Token                         │
+         │ {                                        │
+         │   "scope": "openid nc:read nc:write"    │
+         │   ...                                    │
+         │ }                                        │
+         │                                          │
+         v                                          │
+┌────────────────────────────────────────────────────────────┐
+│         Nextcloud MCP Server                               │
+│  ┌───────────────────────────────────────────────────┐    │
+│  │  NextcloudTokenVerifier                            │    │
+│  │  - JWT signature verification (JWKS)               │    │
+│  │  - Introspection endpoint (opaque tokens)          │    │
+│  │  - Userinfo fallback (last resort)                 │    │
+│  └───────────────────┬───────────────────────────────┘    │
+│                      │                                     │
+│                      v                                     │
+│  ┌───────────────────────────────────────────────────┐    │
+│  │  Dynamic Tool Filtering (list_tools)               │    │
+│  │  - Get user scopes from verified token             │    │
+│  │  - Filter tools based on @require_scopes metadata  │    │
+│  │  - Return only accessible tools                     │    │
+│  └───────────────────┬───────────────────────────────┘    │
+│                      │                                     │
+│                      v                                     │
+│  ┌───────────────────────────────────────────────────┐    │
+│  │  Tool Execution (@require_scopes decorator)        │    │
+│  │  - Check token scopes before execution             │    │
+│  │  - Raise InsufficientScopeError if missing         │    │
+│  │  - Return 403 with WWW-Authenticate header         │    │
+│  └───────────────────────────────────────────────────┘    │
+└────────────────────────────────────────────────────────────┘
+```
+
+### Key Components
+
+**1. Token Verification** (`nextcloud_mcp_server/auth/token_verifier.py`)
+- **Three-tier validation strategy:**
+  1. **JWT verification** (lines 116-124): JWKS signature validation for JWT tokens
+  2. **Introspection** (lines 126-134): RFC 7662 endpoint for opaque tokens
+  3. **Userinfo fallback** (lines 137-142): Last resort if introspection unavailable
+- Scope extraction from token payload (JWT) or introspection response (opaque)
+- Token caching with TTL to reduce repeated validations
+- Supports both access token formats transparently
+
+**2. Scope Authorization** (`nextcloud_mcp_server/auth/scope_authorization.py`)
+- `@require_scopes()` decorator for tools
+- `get_required_scopes()` - Extract scope requirements from functions
+- `has_required_scopes()` - Check if user has necessary scopes
+- `InsufficientScopeError` exception for WWW-Authenticate challenges
+
+**3. Dynamic Filtering** (`nextcloud_mcp_server/app.py:433-488`)
+- Overrides FastMCP's `list_tools()` method
+- Filters based on user's JWT token scopes
+- Only active in OAuth mode
+- Bypassed in BasicAuth mode
+
+**4. PRM Endpoint** (`nextcloud_mcp_server/app.py:503-532`)
+- `GET /.well-known/oauth-protected-resource`
+- Advertises `["nc:read", "nc:write"]`
+- RFC 8959 compliant
+
+**5. Exception Handler** (`nextcloud_mcp_server/app.py:540-563`)
+- Catches `InsufficientScopeError`
+- Returns 403 with `WWW-Authenticate` header
+- Includes missing scopes and PRM endpoint URL
+
+### Token Validation Flow
+
+The `NextcloudTokenVerifier` implements a **cascading validation strategy** that handles both JWT and opaque tokens efficiently:
+
+```
+┌─────────────────────────────────────────────────────────┐
+│  verify_token(token)                                    │
+│  (nextcloud_mcp_server/auth/token_verifier.py:88-142)  │
+└────────────────────────┬────────────────────────────────┘
+                         │
+                         ├──> 1. Check cache (lines 106-109)
+                         │    ├─ Hit: Return cached AccessToken
+                         │    └─ Miss: Continue to validation
+                         │
+                         ├──> 2. JWT Format Check (lines 112-124)
+                         │    ├─ Token has 3 parts (header.payload.signature)?
+                         │    │   └─ Yes: Attempt JWT verification
+                         │    │       ├─ Verify signature with JWKS (RS256)
+                         │    │       ├─ Validate issuer, expiration
+                         │    │       ├─ Extract scopes from payload
+                         │    │       └─ Success: Return AccessToken
+                         │    └─ Fail/Not JWT: Continue to introspection
+                         │
+                         ├──> 3. Introspection (lines 126-134)
+                         │    ├─ POST to /apps/oidc/introspect
+                         │    ├─ Authenticate with client credentials
+                         │    ├─ Response contains:
+                         │    │   • active: true/false
+                         │    │   • scope: "openid nc:read nc:write"
+                         │    │   • sub, exp, iat, client_id
+                         │    ├─ Extract scopes from response
+                         │    └─ Success: Return AccessToken
+                         │
+                         └──> 4. Userinfo Fallback (lines 137-142)
+                              ├─ GET /apps/oidc/userinfo
+                              ├─ Bearer token in Authorization header
+                              ├─ Infer scopes from response claims
+                              └─ Return AccessToken or None
+```
+
+**Validation Priorities:**
+
+| Token Type | Method | Performance | Scope Access | Code Reference |
+|------------|--------|-------------|--------------|----------------|
+| JWT | JWKS Signature | ⚡ Fastest (local) | Direct (`scope` claim) | `token_verifier.py:156-234` |
+| Opaque | Introspection | 🔄 Medium (HTTP) | Direct (`scope` field) | `token_verifier.py:236-328` |
+| Any | Userinfo | 🐌 Slowest (HTTP + inference) | Inferred (from claims) | `token_verifier.py:330-386` |
+
+**Configuration** (`nextcloud_mcp_server/app.py:391-399`):
+```python
+token_verifier = NextcloudTokenVerifier(
+    nextcloud_host=nextcloud_host,
+    userinfo_uri=userinfo_uri,
+    jwks_uri=jwks_uri,                    # Enables JWT verification
+    issuer=jwt_validation_issuer,         # For JWT issuer validation
+    introspection_uri=introspection_uri,  # Enables introspection for opaque tokens
+    client_id=client_id,                  # Required for introspection auth
+    client_secret=client_secret,          # Required for introspection auth
+)
+```
+
+## Testing
+
+### Test Infrastructure
+
+The test suite includes comprehensive coverage for JWT OAuth and scope authorization:
+
+**Test Files:**
+- `tests/server/test_scope_authorization.py` - Scope-based authorization tests (4 tests)
+- `tests/server/test_mcp_oauth_jwt.py` - JWT OAuth integration tests
+- `tests/conftest.py` - Shared fixtures for JWT testing
+
+### Consent Scenario Tests
+
+Four test scenarios verify scope-based tool filtering with different consent levels:
+
+#### 1. No Custom Scopes (0 tools)
+```bash
+uv run pytest tests/server/test_scope_authorization.py::test_jwt_with_no_custom_scopes_returns_zero_tools -v
+```
+
+**Scenario:** JWT token with only OIDC defaults (`openid profile email`)
+**Expected:** 0 tools returned (all require `nc:read` or `nc:write`)
+**Verifies:** Security - users who decline custom scopes cannot access any MCP tools
+
+#### 2. Read-Only Access (36 tools)
+```bash
+uv run pytest tests/server/test_scope_authorization.py::test_jwt_consent_scenarios_read_only -v
+```
+
+**Scenario:** JWT token with `nc:read` only
+**Expected:** 36 read-only tools visible, write tools hidden
+**Verifies:** Read tools accessible, write tools filtered out
+
+#### 3. Write-Only Access (54 tools)
+```bash
+uv run pytest tests/server/test_scope_authorization.py::test_jwt_consent_scenarios_write_only -v
+```
+
+**Scenario:** JWT token with `nc:write` only
+**Expected:** 54 write tools visible, read tools hidden
+**Verifies:** Write tools accessible, read tools filtered out
+
+#### 4. Full Access (90 tools)
+```bash
+uv run pytest tests/server/test_scope_authorization.py::test_jwt_consent_scenarios_full_access -v
+```
+
+**Scenario:** JWT token with both `nc:read` and `nc:write`
+**Expected:** All 90 tools visible
+**Verifies:** Full access when user grants all custom scopes
+
+### Test Fixtures
+
+**OAuth Client Fixtures:**
+- `read_only_oauth_client_credentials` - Client with `nc:read` only
+- `write_only_oauth_client_credentials` - Client with `nc:write` only
+- `full_access_oauth_client_credentials` - Client with both scopes
+- `no_custom_scopes_oauth_client_credentials` - Client with OIDC defaults only
+
+**Token Fixtures:**
+- `playwright_oauth_token_read_only` - Obtains token with `nc:read`
+- `playwright_oauth_token_write_only` - Obtains token with `nc:write`
+- `playwright_oauth_token_full_access` - Obtains token with both scopes
+- `playwright_oauth_token_no_custom_scopes` - Obtains token with no custom scopes
+
+**MCP Client Fixtures:**
+- `nc_mcp_oauth_client_read_only` - MCP session with read-only token
+- `nc_mcp_oauth_client_write_only` - MCP session with write-only token
+- `nc_mcp_oauth_client_full_access` - MCP session with full access token
+- `nc_mcp_oauth_client_no_custom_scopes` - MCP session with no custom scopes
+
+### Running Tests
+
+**All consent scenario tests:**
+```bash
+uv run pytest tests/server/test_scope_authorization.py -v
+```
+
+**JWT OAuth integration tests:**
+```bash
+uv run pytest tests/server/test_mcp_oauth_jwt.py -v --browser firefox
+```
+
+**With visible browser (debugging):**
+```bash
+uv run pytest tests/server/test_mcp_oauth_jwt.py -v --browser firefox --headed
+```
+
+### Test Configuration
+
+**Playwright Browser:**
+- Default: Chromium
+- Recommended for CI: Firefox (`--browser firefox`)
+- Debugging: Add `--headed` flag
+
+**OAuth Flow:**
+- Uses automated Playwright browser automation
+- Completes OAuth consent flow programmatically
+- Creates separate OAuth client for each scenario
+- Each user gets unique access token
+
+---
+
+## Troubleshooting
+
+### Issue: JWT Issuer Validation Failed
+
+**Symptom:**
+```
+WARNING JWT issuer validation failed: Invalid issuer
+WARNING JWT verification failed, will try other methods
+✅ Extracted scopes from access token: {'openid', 'profile'}
+```
+
+**Cause:** Token's `iss` claim doesn't match expected issuer URL. This often happens when:
+- Using `localhost` vs `127.0.0.1` inconsistently
+- MCP server uses internal URL but clients use public URL
+
+**Solution:**
+```bash
+# Option 1: Use consistent URLs
+export NEXTCLOUD_PUBLIC_ISSUER_URL=http://localhost:8080
+# Ensure all test fixtures also use localhost:8080
+
+# Option 2: Check discovery document
+curl http://localhost:8080/.well-known/openid-configuration | jq .issuer
+# Use this exact issuer in NEXTCLOUD_PUBLIC_ISSUER_URL
+```
+
+**Impact if not fixed:**
+- JWT validation falls back to userinfo endpoint
+- Scopes inferred from userinfo (only standard OIDC scopes, no custom scopes)
+- Result: 0 tools visible or incorrect tool filtering
+
+### Issue: Scopes Not Present in JWT
+
+**Symptom:** JWT token doesn't contain `scope` claim or contains empty string
+
+**Cause:** Client's `allowed_scopes` is empty or not configured
+
+**Solution:**
+```bash
+# Check client configuration
+docker compose exec app php occ oidc:list
+
+# Look for allowed_scopes in output
+# If empty, recreate client with --allowed_scopes
+docker compose exec app php occ oidc:create \
+  --token_type=jwt \
+  --allowed_scopes="openid profile email nc:read nc:write" \
+  "Client Name" \
+  "http://callback/url"
+```
+
+### Issue: All Tools Visible Despite Read-Only Token
+
+**Symptom:** User with `nc:read` token can see all 90 tools including write tools
+
+**Cause:** Server running in BasicAuth mode, not OAuth mode
+
+**Solution:**
+```bash
+# Verify OAuth mode is active
+docker compose logs mcp-oauth-jwt | grep "OAuth mode"
+
+# Should see: "Running in OAuth mode"
+
+# If not, check environment variables:
+docker compose exec mcp-oauth-jwt env | grep NEXTCLOUD_OIDC
+
+# Ensure no NEXTCLOUD_USERNAME or NEXTCLOUD_PASSWORD set
+```
+
+### Verifying DCR Scope Configuration
+
+DCR **now properly sets `allowed_scopes`** when the `scope` parameter is provided during registration.
+
+**To verify DCR scopes are working:**
+
+```bash
+# Check the registered client's allowed_scopes via database
+docker compose exec db mariadb -u nextcloud -ppassword nextcloud \
+  -e "SELECT name, allowed_scopes FROM oc_oauth2_clients WHERE name LIKE 'DCR-%' ORDER BY id DESC LIMIT 1;"
+
+# Should show your requested scopes (e.g., "openid profile email nc:read nc:write")
+```
+
+**If scopes are missing:**
+1. Ensure `NEXTCLOUD_OIDC_SCOPES` environment variable is set correctly
+2. Check MCP server startup logs for the scopes being requested
+3. Verify DCR is enabled in Nextcloud OIDC app settings
+4. Delete `.nextcloud_oauth_client.json` and restart to force re-registration
+
+### Issue: Token Type Case Sensitivity
+
+**Symptom:** JWT tokens not generated even though `token_type=JWT` set
+
+**Cause:** OIDC app checks `token_type === 'jwt'` (lowercase)
+
+**Solution:** Always use lowercase:
+```bash
+# Correct
+export NEXTCLOUD_OIDC_TOKEN_TYPE=jwt
+
+# Incorrect (will generate opaque tokens)
+export NEXTCLOUD_OIDC_TOKEN_TYPE=JWT
+```
+
+### Issue: Missing WWW-Authenticate Header
+
+**Symptom:** 403 error doesn't include `WWW-Authenticate` header
+
+**Cause:** Server not in OAuth mode, or exception not being caught
+
+**Solution:**
+```bash
+# Check server logs for OAuth mode
+docker compose logs mcp-oauth-jwt | grep "WWW-Authenticate scope challenges enabled"
+
+# Should see this during startup
+
+# Check exception handling
+docker compose logs mcp-oauth-jwt | grep "InsufficientScopeError"
+```
+
+### Debugging Tools
+
+**Check JWT contents:**
+```bash
+# Decode JWT (base64 decode the payload)
+echo "JWT_PAYLOAD_PART" | base64 -d | jq .
+```
+
+**Check database scopes:**
+```bash
+# View access tokens with scopes
+docker compose exec db mariadb -u nextcloud -ppassword nextcloud \
+  -e "SELECT id, client_id, user_id, scope FROM oc_oidc_access_tokens ORDER BY id DESC LIMIT 5;"
+
+# View user consents
+docker compose exec db mariadb -u nextcloud -ppassword nextcloud \
+  -e "SELECT user_id, client_id, scopes_granted FROM oc_oidc_user_consents;"
+```
+
+**Check server logs:**
+```bash
+# Follow JWT verification logs
+docker compose logs -f mcp-oauth-jwt | grep -E "JWT|scope|tool"
+
+# Check for issuer mismatches
+docker compose logs mcp-oauth-jwt | grep -i issuer
+```
+
+---
+
+## Production Deployment
+
+### Deployment Checklist
+
+✅ **Use JWT Tokens** - Enable `token_type=jwt` for better performance
+✅ **Configure Allowed Scopes** - Always set `allowed_scopes` on OAuth clients
+✅ **Use Pre-Configured Clients** - Avoid DCR limitation with manual client creation
+✅ **Consistent URLs** - Use same URL for `NEXTCLOUD_HOST` and `PUBLIC_ISSUER_URL`
+✅ **Secure Credentials** - Store client credentials securely (environment variables or secrets management)
+✅ **Monitor Token Size** - JWT tokens are 10-15x larger than opaque (not usually an issue)
+✅ **Enable Logging** - Configure appropriate log levels for JWT verification
+
+### Production Configuration Example
+
+```yaml
+# docker-compose.yml (production)
+mcp-oauth-jwt:
+  image: ghcr.io/yourusername/nextcloud-mcp-server:latest
+  environment:
+    - NEXTCLOUD_HOST=https://nextcloud.example.com
+    - NEXTCLOUD_MCP_SERVER_URL=https://mcp.example.com
+    - NEXTCLOUD_PUBLIC_ISSUER_URL=https://nextcloud.example.com
+    - NEXTCLOUD_OIDC_CLIENT_ID=${JWT_CLIENT_ID}
+    - NEXTCLOUD_OIDC_CLIENT_SECRET=${JWT_CLIENT_SECRET}
+    - NEXTCLOUD_OIDC_SCOPES=openid profile email nc:read nc:write
+    - NEXTCLOUD_OIDC_TOKEN_TYPE=jwt
+  ports:
+    - "8002:8002"
+```
+
+### Security Considerations
+
+**Token Storage:**
+- Never commit credentials to version control
+- Use environment variables or secrets management
+- Rotate client secrets periodically
+
+**Scope Configuration:**
+- Grant minimum necessary scopes to clients
+- Use read-only tokens for AI assistants that don't need write access
+- Review OAuth client list regularly
+
+**Network Security:**
+- Use HTTPS in production
+- Ensure issuer URL matches public URL
+- Configure proper CORS headers
+
+### Monitoring
+
+**Key Metrics:**
+- JWT verification success/failure rate
+- Scope challenge frequency (indicates clients with insufficient scopes)
+- Token validation latency
+- Tool execution by scope (identify unused scopes)
+
+**Log Patterns:**
+```bash
+# Success
+INFO JWT verified successfully for user: admin
+INFO ✅ Extracted scopes from access token: {'openid', 'profile', 'email', 'nc:read', 'nc:write'}
+
+# Failures
+WARNING JWT issuer validation failed: Invalid issuer
+WARNING Missing required scopes: nc:write
+```
+
+### Known Limitations
+
+1. **No Fine-Grained Scopes** - Only coarse `nc:read` and `nc:write` (not per-app scopes)
+2. **No Refresh Token Support** - Tokens must be reacquired when expired
+
+### Future Enhancements
+
+**Potential Improvements:**
+- Per-app scopes (`nc:notes:read`, `nc:calendar:write`)
+- Resource-level filtering (apply to MCP resources, not just tools)
+- Automatic scope discovery from decorated tools
+- Admin UI for scope management
+
+---
+
+## References
+
+### Standards
+
+- [RFC 9068: JWT Profile for OAuth 2.0 Access Tokens](https://www.rfc-editor.org/rfc/rfc9068.html)
+- [RFC 7519: JSON Web Token (JWT)](https://www.rfc-editor.org/rfc/rfc7519.html)
+- [RFC 7517: JSON Web Key (JWK)](https://www.rfc-editor.org/rfc/rfc7517.html)
+- [RFC 8959: Protected Resource Metadata](https://www.rfc-editor.org/rfc/rfc8959.html)
+- [RFC 7662: OAuth 2.0 Token Introspection](https://www.rfc-editor.org/rfc/rfc7662.html)
+
+### Related Documentation
+
+- [OAuth Setup Guide](oauth-setup.md) - Complete OAuth configuration guide
+- [OAuth Architecture](oauth-architecture.md) - Detailed architecture documentation
+- [OAuth Troubleshooting](oauth-troubleshooting.md) - Common OAuth issues and solutions
+- [Authentication Guide](authentication.md) - BasicAuth vs OAuth comparison
+
+### External Resources
+
+- [Nextcloud OIDC App](https://github.com/H2CK/oidc) - OIDC identity provider for Nextcloud
+- [PyJWT Documentation](https://pyjwt.readthedocs.io/) - JWT library used for verification
+- [FastMCP Documentation](https://github.com/jlowin/fastmcp) - MCP server framework
+
+---
+
+**Implementation Date:** 2025-10-21 to 2025-10-23
+**Version:** 1.0.0
+**Status:** ✅ Production Ready

docs/testing-client-sessions-architecture.md

@@ -41,7 +41,7 @@ async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
     """Fixture with surgical exception handling for pytest-asyncio incompatibility."""
     try:
         async for session in create_mcp_client_session(
-            url="http://127.0.0.1:8000/mcp", client_name="Basic MCP"
+            url="http://localhost:8000/mcp", client_name="Basic MCP"
         ):
             yield session
     except RuntimeError as e:
@@ -88,7 +88,7 @@ async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
 
     async def create_and_hold_session():
         """Runs in isolated task - creates session and keeps it alive."""
-        async with streamablehttp_client("http://127.0.0.1:8000/mcp") as (read_stream, write_stream, _):
+        async with streamablehttp_client("http://localhost:8000/mcp") as (read_stream, write_stream, _):
             async with ClientSession(read_stream, write_stream) as session:
                 await session.initialize()
                 session_holder["session"] = session
@@ -141,7 +141,7 @@ async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
 @pytest.fixture(scope="function")  # Changed from session
 async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
     """Function-scoped fixture with natural LIFO cleanup."""
-    async with streamablehttp_client("http://127.0.0.1:8000/mcp") as (read_stream, write_stream, _):
+    async with streamablehttp_client("http://localhost:8000/mcp") as (read_stream, write_stream, _):
         async with ClientSession(read_stream, write_stream) as session:
             await session.initialize()
             yield session
@@ -150,11 +150,11 @@ async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
 @pytest.fixture(scope="function")
 async def multi_mcp_clients() -> AsyncGenerator[tuple[ClientSession, ClientSession], Any]:
     """Multiple clients with guaranteed LIFO cleanup through nesting."""
-    async with streamablehttp_client("http://127.0.0.1:8000/mcp") as (read1, write1, _):
+    async with streamablehttp_client("http://localhost:8000/mcp") as (read1, write1, _):
         async with ClientSession(read1, write1) as session1:
             await session1.initialize()
 
-            async with streamablehttp_client("http://127.0.0.1:8001/mcp") as (read2, write2, _):
+            async with streamablehttp_client("http://localhost:8001/mcp") as (read2, write2, _):
                 async with ClientSession(read2, write2) as session2:
                     await session2.initialize()
                     yield session1, session2
@@ -195,7 +195,7 @@ async def multi_mcp_clients() -> AsyncGenerator[tuple[ClientSession, ClientSessi
 # Fixtures work naturally with trio
 @pytest.fixture(scope="session")
 async def nc_mcp_client() -> AsyncGenerator[ClientSession, Any]:
-    async with streamablehttp_client("http://127.0.0.1:8000/mcp") as (read, write, _):
+    async with streamablehttp_client("http://localhost:8000/mcp") as (read, write, _):
         async with ClientSession(read, write) as session:
             await session.initialize()
             yield session

docs/testing-oidc-consent.md

@@ -0,0 +1,412 @@
+# Testing OIDC Consent Feature
+
+This guide explains how to test the OIDC consent feature using the development version of the OIDC app mounted into the Docker environment.
+
+## Setup
+
+### Volume Mount Configuration
+
+The development OIDC app is mounted from `~/Software/oidc` into the container at `/opt/apps/oidc`:
+
+```yaml
+# docker-compose.yml
+volumes:
+  - ../Software/oidc:/opt/apps/oidc:ro
+```
+
+**Why mount outside `/var/www/html/`?**
+- The Nextcloud container uses `rsync` to initialize `/var/www/html/` from the image
+- Mounting inside that path causes conflicts (rsync tries to delete mounted directories)
+- Mounting to `/opt/apps/oidc` avoids rsync entirely
+- Nextcloud supports multiple app directories via the `apps_paths` configuration
+
+**How multiple app paths work:**
+- Nextcloud can load apps from multiple directories
+- The post-installation hook registers `/opt/apps` as an additional app directory (index 2)
+- Apps in default paths (index 0 and 1) are still available
+- All directories are scanned for apps, but `/opt/apps` is read-only
+
+This setup allows you to:
+- Test changes without rebuilding containers
+- Avoid needing npm/node in the container (JS already built on host)
+- Iterate quickly on development
+- Install other Nextcloud apps normally (custom_apps remains writable)
+
+### How It Works
+
+1. **Mount Development App**: Docker mounts `~/Software/oidc` to `/opt/apps/oidc` (outside Nextcloud's path)
+2. **Register App Path**: The `10-install-oidc-app.sh` hook configures `/opt/apps` as an additional app directory
+3. **Enable App**: The hook enables the OIDC app from `/opt/apps/oidc`
+4. **Run Migrations**: Nextcloud detects pending migrations and runs them automatically
+5. **Configure OIDC**: Dynamic client registration and PKCE are enabled
+
+## Starting the Stack
+
+```bash
+cd ~/Projects/nextcloud-mcp-server
+
+# Start fresh (recommended for first test)
+docker compose down -v
+docker compose up -d
+
+# Wait for initialization (check logs)
+docker compose logs -f app
+```
+
+The post-installation hooks will:
+1. Configure custom_apps path (already done)
+2. Enable OIDC app from mounted directory
+3. Run database migrations (including consent table creation)
+4. Configure OIDC settings
+
+## Verifying Installation
+
+### Before Container Restart
+
+Before running `docker compose up -d`, the consent feature will NOT be active:
+- ❌ No `oc_oidc_user_consents` table in database
+- ❌ Migration 0015 not applied yet
+- ❌ ConsentController class not loaded
+- ❌ Consent routes not registered
+
+You can verify this with:
+```bash
+# Check migrations applied (should stop at 0014)
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SELECT version FROM oc_migrations WHERE app = 'oidc' ORDER BY version DESC LIMIT 3;" nextcloud
+
+# Check for consent table (should return empty)
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SHOW TABLES LIKE 'oc_oidc_user_consents';" nextcloud
+```
+
+### After Container Restart
+
+After `docker compose up -d` with the mounted OIDC directory, the consent feature should be active:
+- ✅ `oc_oidc_user_consents` table exists
+- ✅ Migration 0015 (Version0015Date20251123100100) applied
+- ✅ ConsentController routes registered
+- ✅ Consent screen appears during OAuth flows
+
+### Check App Status
+
+```bash
+docker compose exec app php occ app:list | grep -A 2 oidc
+```
+
+Expected output:
+```
+  - oidc: 1.10.0 (enabled)
+```
+
+### Verify App Paths Configuration
+
+Verify that `/opt/apps` is registered as an additional app directory:
+
+```bash
+# Check configured app paths
+docker compose exec app php occ config:system:get apps_paths
+
+# Verify the mount is accessible
+docker compose exec app ls -la /opt/apps/oidc/
+
+# Verify custom_apps is writable (for normal app installation)
+docker compose exec -u www-data app touch /var/www/html/custom_apps/.test && echo "✅ custom_apps is writable" || echo "❌ custom_apps NOT writable"
+docker compose exec app rm -f /var/www/html/custom_apps/.test
+```
+
+Expected: Output should show multiple app paths including index 2 (/opt/apps).
+
+### Verify Consent Files
+
+```bash
+# Check controller exists in mounted location
+docker compose exec app ls -la /opt/apps/oidc/lib/Controller/ConsentController.php
+
+# Check Vue component exists
+docker compose exec app ls -la /opt/apps/oidc/src/Consent.vue
+
+# Check built JS exists
+docker compose exec app ls -lh /opt/apps/oidc/js/oidc-consent.js
+```
+
+### Verify Database Migration
+
+**Note**: These checks will only pass after restarting containers with the mounted OIDC app.
+
+```bash
+# Check if consent table exists
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SHOW TABLES LIKE 'oc_oidc_user_consents';"
+
+# Check table structure
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "DESCRIBE oc_oidc_user_consents;"
+
+# Verify migration 0015 was applied
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SELECT app, version FROM oc_migrations WHERE app = 'oidc' AND version LIKE '%0015%';"
+```
+
+Expected table structure:
+- id: int(10) unsigned, auto_increment, primary key
+- user_id: varchar(256), not null
+- client_id: int(10) unsigned, not null
+- scopes_granted: varchar(512), not null
+- created_at: int(10) unsigned, not null
+- updated_at: int(10) unsigned, not null
+- expires_at: int(10) unsigned, nullable
+
+### Verify Routes
+
+```bash
+docker compose exec app php occ router:list | grep consent
+```
+
+Expected output:
+```
+oidc.Consent.show        GET    apps/oidc/consent
+oidc.Consent.grant       POST   apps/oidc/consent/grant
+oidc.Consent.deny        POST   apps/oidc/consent/deny
+```
+
+## Testing the Consent Flow
+
+### 1. Create an OAuth Client
+
+The JWT client is automatically created by the post-installation hooks:
+
+```bash
+# Check if JWT client exists
+docker compose exec app cat /var/www/html/.oauth-jwt/nextcloud_oauth_client.json
+```
+
+### 2. Initiate Authorization Flow
+
+You can test using the MCP OAuth container or manually:
+
+**Option A: Using MCP OAuth container**
+```bash
+# The mcp-oauth-jwt container will trigger the OAuth flow
+docker compose logs -f mcp-oauth-jwt
+```
+
+**Option B: Manual browser test**
+1. Get client_id from the JWT client JSON
+2. Visit in browser:
+```
+http://localhost:8080/apps/oidc/authorize?client_id=YOUR_CLIENT_ID&response_type=code&redirect_uri=http://localhost:8002/oauth/callback&scope=openid+profile+email+nc:read+nc:write&state=test123
+```
+
+### 3. Expected Behavior
+
+**First Authorization:**
+1. User logs in (if not already authenticated)
+2. **Consent screen appears** with:
+   - Application name: "Nextcloud MCP Server JWT"
+   - List of requested scopes with descriptions:
+     - ✓ Basic authentication (openid) - required, cannot deselect
+     - ✓ Profile information (profile)
+     - ✓ Email address (email)
+     - ✓ nc:read (custom scope, shown as-is)
+     - ✓ nc:write (custom scope, shown as-is)
+   - "Allow" and "Deny" buttons
+3. User selects scopes and clicks "Allow"
+4. Authorization proceeds with selected scopes
+5. Consent is stored in database
+
+**Subsequent Authorizations:**
+- Same scopes → No consent screen (uses stored consent)
+- Different scopes → Consent screen appears again
+- If user clicks "Deny" → Returns `error=access_denied` to client
+
+### 4. Verify Consent Stored
+
+After granting consent:
+
+```bash
+# View all stored consents with formatted timestamps
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "
+SELECT
+    user_id,
+    client_id,
+    scopes_granted,
+    FROM_UNIXTIME(created_at) as created,
+    FROM_UNIXTIME(updated_at) as updated,
+    FROM_UNIXTIME(expires_at) as expires
+FROM oc_oidc_user_consents;
+" nextcloud
+
+# Or for a compact view:
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SELECT * FROM oc_oidc_user_consents;" nextcloud
+```
+
+## Troubleshooting
+
+### Consent Screen Not Appearing
+
+**Check browser console** (F12 → Console tab):
+```
+# Look for JS errors like:
+Failed to load resource: js/oidc-consent.js
+```
+
+**Check Nextcloud logs:**
+```bash
+docker compose exec app tail -f /var/www/html/data/nextcloud.log | grep -i consent
+```
+
+**Verify JS file loaded:**
+```bash
+# Check file exists and has correct size (~73KB)
+docker compose exec app ls -lh /opt/apps/oidc/js/oidc-consent.js
+```
+
+**Clear Nextcloud caches:**
+```bash
+docker compose exec app php occ maintenance:repair
+docker compose restart app
+```
+
+### Migration Didn't Run
+
+**Check which migrations have been applied:**
+```bash
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SELECT app, version FROM oc_migrations WHERE app = 'oidc' ORDER BY version;" nextcloud
+```
+
+Expected to see `Version0015Date20251123100100` in the list.
+
+**Manually trigger migrations:**
+```bash
+# Disable and re-enable app (triggers all pending migrations)
+docker compose exec app php occ app:disable oidc
+docker compose exec app php occ app:enable oidc
+
+# Verify migration 0015 was applied
+docker compose exec -T db mariadb -u nextcloud -ppassword nextcloud -e "SELECT version FROM oc_migrations WHERE app = 'oidc' AND version LIKE '%0015%';" nextcloud
+```
+
+### Routes Not Registered
+
+If `router:list` doesn't show consent routes:
+
+```bash
+# The autoloader might not have picked up new classes
+# Restart the container
+docker compose restart app
+
+# Wait for it to be ready
+sleep 10
+
+# Try again
+docker compose exec app php occ router:list | grep consent
+```
+
+If still not working, check if ConsentController is accessible:
+```bash
+docker compose exec app php -r "
+require_once '/var/www/html/lib/base.php';
+\$class = 'OCA\\OIDCIdentityProvider\\Controller\\ConsentController';
+if (class_exists(\$class)) {
+    echo \"Class exists\n\";
+} else {
+    echo \"Class not found\n\";
+}
+"
+```
+
+## Making Changes
+
+### Frontend Changes (Vue.js)
+
+1. Edit source file on host:
+```bash
+cd ~/Software/oidc
+# Edit src/Consent.vue
+```
+
+2. Rebuild JS:
+```bash
+npm run build
+```
+
+3. Refresh browser (container sees changes immediately via volume mount at /opt/apps/oidc)
+
+### Backend Changes (PHP)
+
+1. Edit files on host:
+```bash
+cd ~/Software/oidc
+# Edit lib/Controller/ConsentController.php or other PHP files
+```
+
+2. Changes are immediately visible (PHP is interpreted, no build step)
+
+3. For new classes or major changes, restart container:
+```bash
+docker compose restart app
+```
+
+### Database Schema Changes
+
+If you modify the migration:
+
+```bash
+# Changes won't be picked up if migration already ran
+# Need to recreate the database:
+docker compose down -v  # Removes volumes
+docker compose up -d    # Fresh start with clean DB
+```
+
+## Cleanup
+
+### Reset Everything
+
+```bash
+cd ~/Projects/nextcloud-mcp-server
+docker compose down -v
+```
+
+This removes:
+- All containers
+- Database volume (all data)
+- OAuth client credentials
+
+### Keep Data, Restart App
+
+```bash
+docker compose restart app
+```
+
+This preserves:
+- Database (consents, clients, users)
+- OAuth client credentials
+
+## Development Workflow Summary
+
+1. **Make changes** in `~/Software/oidc`
+2. **Build JS** if you changed Vue files: `npm run build`
+3. **Test immediately** - refresh browser or restart container
+4. **No need** to rebuild Docker images or reinstall app
+5. **Iterate quickly** with instant feedback
+
+## Production Deployment
+
+When ready to deploy:
+
+1. **Create patch file** (already done):
+   ```bash
+   cd ~/Software/oidc
+   git format-patch master --stdout > user-consent-feature.patch
+   ```
+
+2. **Test patch** in clean environment:
+   ```bash
+   # In a production-like environment
+   cd /path/to/production/oidc
+   git apply user-consent-feature.patch
+   npm install
+   npm run build
+   php occ app:disable oidc
+   php occ app:enable oidc
+   ```
+
+3. **Verify migration** runs automatically on app enable
+
+4. **Submit pull request** to upstream repository

nextcloud_mcp_server/app.py

@@ -11,9 +11,16 @@ from mcp.server.auth.settings import AuthSettings
 from mcp.server.fastmcp import Context, FastMCP
 from pydantic import AnyHttpUrl
 from starlette.applications import Starlette
-from starlette.routing import Mount
+from starlette.responses import JSONResponse
+from starlette.routing import Mount, Route
 
-from nextcloud_mcp_server.auth import NextcloudTokenVerifier, load_or_register_client
+from nextcloud_mcp_server.auth import (
+    InsufficientScopeError,
+    NextcloudTokenVerifier,
+    get_access_token_scopes,
+    has_required_scopes,
+    is_jwt_token,
+)
 from nextcloud_mcp_server.client import NextcloudClient
 from nextcloud_mcp_server.config import LOGGING_CONFIG, setup_logging
 from nextcloud_mcp_server.context import get_client as get_nextcloud_client
@@ -135,6 +142,95 @@ def is_oauth_mode() -> bool:
     return True
 
 
+async def load_oauth_client_credentials(
+    nextcloud_host: str, registration_endpoint: str | None
+) -> tuple[str, str]:
+    """
+    Load OAuth client credentials from environment, storage file, or dynamic registration.
+
+    This consolidates the client loading logic that was duplicated across multiple functions.
+
+    Args:
+        nextcloud_host: Nextcloud instance URL
+        registration_endpoint: Dynamic registration endpoint URL (or None if not available)
+
+    Returns:
+        Tuple of (client_id, client_secret)
+
+    Raises:
+        ValueError: If credentials cannot be obtained
+    """
+    # Try environment variables first
+    client_id = os.getenv("NEXTCLOUD_OIDC_CLIENT_ID")
+    client_secret = os.getenv("NEXTCLOUD_OIDC_CLIENT_SECRET")
+
+    if client_id and client_secret:
+        logger.info("Using pre-configured OAuth client credentials from environment")
+        return (client_id, client_secret)
+
+    # Try loading from storage file
+    storage_path = os.getenv(
+        "NEXTCLOUD_OIDC_CLIENT_STORAGE", ".nextcloud_oauth_client.json"
+    )
+    from pathlib import Path
+
+    from nextcloud_mcp_server.auth.client_registration import load_client_from_file
+
+    client_info = load_client_from_file(Path(storage_path))
+
+    if client_info:
+        logger.info(
+            f"Loaded OAuth client from storage: {client_info.client_id[:16]}..."
+        )
+        return (client_info.client_id, client_info.client_secret)
+
+    # Try dynamic registration if available
+    if registration_endpoint:
+        logger.info("Dynamic client registration available")
+        mcp_server_url = os.getenv("NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000")
+        redirect_uris = [f"{mcp_server_url}/oauth/callback"]
+
+        # Get scopes from environment or use defaults
+        scopes = os.getenv(
+            "NEXTCLOUD_OIDC_SCOPES", "openid profile email nc:read nc:write"
+        )
+        logger.info(f"Requesting OAuth scopes: {scopes}")
+
+        # Get token type from environment (Bearer or jwt)
+        # Note: Must be lowercase "jwt" to match OIDC app's check
+        token_type = os.getenv("NEXTCLOUD_OIDC_TOKEN_TYPE", "Bearer").lower()
+        # Special case: "bearer" should remain capitalized for compatibility
+        if token_type != "jwt":
+            token_type = "Bearer"
+        logger.info(f"Requesting token type: {token_type}")
+
+        # Load or register client
+        from nextcloud_mcp_server.auth.client_registration import (
+            load_or_register_client,
+        )
+
+        client_info = await load_or_register_client(
+            nextcloud_url=nextcloud_host,
+            registration_endpoint=registration_endpoint,
+            storage_path=storage_path,
+            client_name="Nextcloud MCP Server",
+            redirect_uris=redirect_uris,
+            scopes=scopes,
+            token_type=token_type,
+        )
+
+        logger.info(f"OAuth client ready: {client_info.client_id[:16]}...")
+        return (client_info.client_id, client_info.client_secret)
+
+    # No credentials available
+    raise ValueError(
+        "OAuth mode requires either:\n"
+        "1. NEXTCLOUD_OIDC_CLIENT_ID and NEXTCLOUD_OIDC_CLIENT_SECRET environment variables, OR\n"
+        "2. Pre-existing client credentials file at NEXTCLOUD_OIDC_CLIENT_STORAGE, OR\n"
+        "3. Dynamic client registration enabled on Nextcloud OIDC app"
+    )
+
+
 @asynccontextmanager
 async def app_lifespan_basic(server: FastMCP) -> AsyncIterator[AppContext]:
     """
@@ -187,45 +283,24 @@ async def app_lifespan_oauth(server: FastMCP) -> AsyncIterator[OAuthAppContext]:
         # Extract endpoints
         userinfo_uri = discovery["userinfo_endpoint"]
         registration_endpoint = discovery.get("registration_endpoint")
+        introspection_uri = discovery.get("introspection_endpoint")
 
         logger.info(f"Userinfo endpoint: {userinfo_uri}")
+        if introspection_uri:
+            logger.info(f"Introspection endpoint: {introspection_uri}")
 
-        # Handle client registration
-        client_id = os.getenv("NEXTCLOUD_OIDC_CLIENT_ID")
-        client_secret = os.getenv("NEXTCLOUD_OIDC_CLIENT_SECRET")
-        storage_path = os.getenv(
-            "NEXTCLOUD_OIDC_CLIENT_STORAGE", ".nextcloud_oauth_client.json"
+        # Load OAuth client credentials
+        client_id, client_secret = await load_oauth_client_credentials(
+            nextcloud_host=nextcloud_host, registration_endpoint=registration_endpoint
         )
 
-        if client_id and client_secret:
-            logger.info("Using pre-configured OAuth client credentials")
-        elif registration_endpoint:
-            logger.info("Dynamic client registration available")
-            mcp_server_url = os.getenv(
-                "NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000"
-            )
-            redirect_uris = [f"{mcp_server_url}/oauth/callback"]
-
-            # Load or register client
-            client_info = await load_or_register_client(
-                nextcloud_url=nextcloud_host,
-                registration_endpoint=registration_endpoint,
-                storage_path=storage_path,
-                client_name="Nextcloud MCP Server",
-                redirect_uris=redirect_uris,
-            )
-
-            logger.info(f"OAuth client ready: {client_info.client_id[:16]}...")
-        else:
-            raise ValueError(
-                "OAuth mode requires either:\n"
-                "1. NEXTCLOUD_OIDC_CLIENT_ID and NEXTCLOUD_OIDC_CLIENT_SECRET, OR\n"
-                "2. Dynamic client registration enabled on Nextcloud OIDC app"
-            )
-
-        # Create token verifier
+        # Create token verifier with introspection support
         token_verifier = NextcloudTokenVerifier(
-            nextcloud_host=nextcloud_host, userinfo_uri=userinfo_uri
+            nextcloud_host=nextcloud_host,
+            userinfo_uri=userinfo_uri,
+            introspection_uri=introspection_uri,
+            client_id=client_id,
+            client_secret=client_secret,
         )
 
         logger.info("OAuth initialization complete")
@@ -278,59 +353,60 @@ async def setup_oauth_config():
     # Extract endpoints
     issuer = discovery["issuer"]
     userinfo_uri = discovery["userinfo_endpoint"]
+    jwks_uri = discovery.get("jwks_uri")
+    introspection_uri = discovery.get("introspection_endpoint")
     registration_endpoint = discovery.get("registration_endpoint")
 
-    # Allow override of public issuer URL for clients
-    # (useful when MCP server accesses Nextcloud via internal URL
-    # but needs to advertise a different URL to clients)
+    logger.info("OIDC endpoints discovered:")
+    logger.info(f"  Issuer: {issuer}")
+    logger.info(f"  Userinfo: {userinfo_uri}")
+    logger.info(f"  JWKS: {jwks_uri}")
+    if introspection_uri:
+        logger.info(f"  Introspection: {introspection_uri}")
+
+    # Allow override of public issuer URL for both client configuration and JWT validation
+    # When clients access Nextcloud via a public URL (e.g., http://127.0.0.1:8080),
+    # the OIDC app issues JWT tokens with that public URL in the 'iss' claim,
+    # even though the MCP server accesses Nextcloud via an internal URL (e.g., http://app).
+    # Therefore, we must validate JWT tokens against the public issuer, not the internal one.
     public_issuer = os.getenv("NEXTCLOUD_PUBLIC_ISSUER_URL")
     if public_issuer:
         public_issuer = public_issuer.rstrip("/")
-        logger.info(f"Using public issuer URL for clients: {public_issuer}")
+        logger.info(
+            f"Using public issuer URL for clients and JWT validation: {public_issuer}"
+        )
+        # Use public issuer for both client configuration AND JWT validation
         issuer = public_issuer
-
-    # Handle client registration
-    client_id = os.getenv("NEXTCLOUD_OIDC_CLIENT_ID")
-    client_secret = os.getenv("NEXTCLOUD_OIDC_CLIENT_SECRET")
-
-    if client_id and client_secret:
-        logger.info("Using pre-configured OAuth client credentials")
-    elif registration_endpoint:
-        logger.info("Dynamic client registration available")
-        storage_path = os.getenv(
-            "NEXTCLOUD_OIDC_CLIENT_STORAGE", ".nextcloud_oauth_client.json"
-        )
-        mcp_server_url = os.getenv("NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000")
-        redirect_uris = [f"{mcp_server_url}/oauth/callback"]
-
-        # Load or register client
-        client_info = await load_or_register_client(
-            nextcloud_url=nextcloud_host,
-            registration_endpoint=registration_endpoint,
-            storage_path=storage_path,
-            client_name="Nextcloud MCP Server",
-            redirect_uris=redirect_uris,
-        )
-
-        logger.info(f"OAuth client ready: {client_info.client_id[:16]}...")
+        jwt_validation_issuer = public_issuer
     else:
-        raise ValueError(
-            "OAuth mode requires either:\n"
-            "1. NEXTCLOUD_OIDC_CLIENT_ID and NEXTCLOUD_OIDC_CLIENT_SECRET, OR\n"
-            "2. Dynamic client registration enabled on Nextcloud OIDC app"
-        )
+        # Use discovered issuer for both
+        jwt_validation_issuer = issuer
 
-    # Create token verifier
+    # Load OAuth client credentials
+    client_id, client_secret = await load_oauth_client_credentials(
+        nextcloud_host=nextcloud_host, registration_endpoint=registration_endpoint
+    )
+
+    # Create token verifier with JWT support and introspection
     token_verifier = NextcloudTokenVerifier(
-        nextcloud_host=nextcloud_host, userinfo_uri=userinfo_uri
+        nextcloud_host=nextcloud_host,
+        userinfo_uri=userinfo_uri,
+        jwks_uri=jwks_uri,  # Enable JWT verification if available
+        issuer=jwt_validation_issuer,  # Use original issuer for JWT validation
+        introspection_uri=introspection_uri,  # Enable introspection for opaque tokens
+        client_id=client_id,
+        client_secret=client_secret,
     )
 
     # Create auth settings
     mcp_server_url = os.getenv("NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000")
+
+    # Note: We don't set required_scopes here anymore.
+    # Scopes are now advertised via PRM endpoint and enforced per-tool.
+    # This allows dynamic tool filtering based on user's actual token scopes.
     auth_settings = AuthSettings(
         issuer_url=AnyHttpUrl(issuer),
         resource_server_url=AnyHttpUrl(mcp_server_url),
-        required_scopes=["openid", "profile"],
     )
 
     logger.info("OAuth configuration complete")
@@ -393,6 +469,54 @@ def get_app(transport: str = "sse", enabled_apps: list[str] | None = None):
                 f"Unknown app: {app_name}. Available apps: {list(available_apps.keys())}"
             )
 
+    # Override list_tools to filter based on user's token scopes (OAuth mode only)
+    if oauth_enabled:
+        original_list_tools = mcp._tool_manager.list_tools
+
+        def list_tools_filtered():
+            """List tools filtered by user's token scopes (JWT tokens only)."""
+            # Get user's scopes from token using MCP SDK's contextvar
+            # This works for all request types including list_tools
+            user_scopes = get_access_token_scopes()
+            is_jwt = is_jwt_token()
+            logger.info(
+                f"🔍 list_tools called - Token type: {'JWT' if is_jwt else 'opaque/none'}, "
+                f"User scopes: {user_scopes}"
+            )
+
+            # Get all tools
+            all_tools = original_list_tools()
+
+            # Only filter for JWT tokens (opaque tokens show all tools)
+            # JWT tokens have scopes embedded, so we can reliably filter
+            # Opaque tokens may not have accurate scope information from introspection
+            if is_jwt and user_scopes:
+                allowed_tools = [
+                    tool
+                    for tool in all_tools
+                    if has_required_scopes(tool.fn, user_scopes)
+                ]
+                logger.info(
+                    f"✂️ JWT scope filtering: {len(allowed_tools)}/{len(all_tools)} tools "
+                    f"available for scopes: {user_scopes}"
+                )
+            else:
+                # Opaque token, BasicAuth mode, or no token - show all tools
+                allowed_tools = all_tools
+                reason = (
+                    "opaque token (no filtering)"
+                    if not is_jwt and user_scopes
+                    else "no token/BasicAuth"
+                )
+                logger.info(f"📋 Showing all {len(all_tools)} tools ({reason})")
+
+            # Return the Tool objects directly (they're already in the correct format)
+            return allowed_tools
+
+        # Replace the tool manager's list_tools method
+        mcp._tool_manager.list_tools = list_tools_filtered
+        logger.info("Dynamic tool filtering enabled for OAuth mode (JWT tokens only)")
+
     if transport == "sse":
         mcp_app = mcp.sse_app()
         lifespan = None
@@ -405,7 +529,71 @@ def get_app(transport: str = "sse", enabled_apps: list[str] | None = None):
                 await stack.enter_async_context(mcp.session_manager.run())
                 yield
 
-    app = Starlette(routes=[Mount("/", app=mcp_app)], lifespan=lifespan)
+    # Add Protected Resource Metadata (PRM) endpoint for OAuth mode
+    routes = []
+    if oauth_enabled:
+
+        def oauth_protected_resource_metadata(request):
+            """RFC 8959 Protected Resource Metadata endpoint."""
+            mcp_server_url = os.getenv(
+                "NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000"
+            )
+            # Use PUBLIC_ISSUER_URL for authorization server since external clients
+            # (like Claude) need the publicly accessible URL, not internal Docker URLs
+            public_issuer_url = os.getenv("NEXTCLOUD_PUBLIC_ISSUER_URL")
+            if not public_issuer_url:
+                # Fallback to NEXTCLOUD_HOST if PUBLIC_ISSUER_URL not set
+                public_issuer_url = os.getenv("NEXTCLOUD_HOST", "")
+
+            return JSONResponse(
+                {
+                    "resource": mcp_server_url,
+                    "scopes_supported": ["nc:read", "nc:write"],
+                    "authorization_servers": [public_issuer_url],
+                    "bearer_methods_supported": ["header"],
+                    "resource_signing_alg_values_supported": ["RS256"],
+                }
+            )
+
+        routes.append(
+            Route(
+                "/.well-known/oauth-protected-resource",
+                oauth_protected_resource_metadata,
+                methods=["GET"],
+            )
+        )
+        logger.info("Protected Resource Metadata (PRM) endpoint enabled")
+
+    routes.append(Mount("/", app=mcp_app))
+    app = Starlette(routes=routes, lifespan=lifespan)
+
+    # Add exception handler for scope challenges (OAuth mode only)
+    if oauth_enabled:
+
+        @app.exception_handler(InsufficientScopeError)
+        async def handle_insufficient_scope(request, exc: InsufficientScopeError):
+            """Return 403 with WWW-Authenticate header for scope challenges."""
+            resource_url = os.getenv(
+                "NEXTCLOUD_MCP_SERVER_URL", "http://localhost:8000"
+            )
+            scope_str = " ".join(exc.missing_scopes)
+
+            return JSONResponse(
+                status_code=403,
+                headers={
+                    "WWW-Authenticate": (
+                        f'Bearer error="insufficient_scope", '
+                        f'scope="{scope_str}", '
+                        f'resource_metadata="{resource_url}/.well-known/oauth-protected-resource"'
+                    )
+                },
+                content={
+                    "error": "insufficient_scope",
+                    "scopes_required": exc.missing_scopes,
+                },
+            )
+
+        logger.info("WWW-Authenticate scope challenge handler enabled")
 
     return app
 
@@ -471,6 +659,41 @@ def get_app(transport: str = "sse", enabled_apps: list[str] | None = None):
     show_default=True,
     help="MCP server URL for OAuth callbacks (can also use NEXTCLOUD_MCP_SERVER_URL env var)",
 )
+@click.option(
+    "--nextcloud-host",
+    envvar="NEXTCLOUD_HOST",
+    help="Nextcloud instance URL (can also use NEXTCLOUD_HOST env var)",
+)
+@click.option(
+    "--nextcloud-username",
+    envvar="NEXTCLOUD_USERNAME",
+    help="Nextcloud username for BasicAuth (can also use NEXTCLOUD_USERNAME env var)",
+)
+@click.option(
+    "--nextcloud-password",
+    envvar="NEXTCLOUD_PASSWORD",
+    help="Nextcloud password for BasicAuth (can also use NEXTCLOUD_PASSWORD env var)",
+)
+@click.option(
+    "--oauth-scopes",
+    envvar="NEXTCLOUD_OIDC_SCOPES",
+    default="openid profile email nc:read nc:write",
+    show_default=True,
+    help="OAuth scopes to request (can also use NEXTCLOUD_OIDC_SCOPES env var)",
+)
+@click.option(
+    "--oauth-token-type",
+    envvar="NEXTCLOUD_OIDC_TOKEN_TYPE",
+    default="bearer",
+    show_default=True,
+    type=click.Choice(["bearer", "jwt"], case_sensitive=False),
+    help="OAuth token type (can also use NEXTCLOUD_OIDC_TOKEN_TYPE env var)",
+)
+@click.option(
+    "--public-issuer-url",
+    envvar="NEXTCLOUD_PUBLIC_ISSUER_URL",
+    help="Public issuer URL for OAuth (can also use NEXTCLOUD_PUBLIC_ISSUER_URL env var)",
+)
 def run(
     host: str,
     port: int,
@@ -482,6 +705,12 @@ def run(
     oauth_client_secret: str | None,
     oauth_storage_path: str,
     mcp_server_url: str,
+    nextcloud_host: str | None,
+    nextcloud_username: str | None,
+    nextcloud_password: str | None,
+    oauth_scopes: str,
+    oauth_token_type: str,
+    public_issuer_url: str | None,
 ):
     """
     Run the Nextcloud MCP server.
@@ -493,24 +722,52 @@ def run(
 
     \b
     Examples:
-      # BasicAuth mode (legacy)
+      # BasicAuth mode with CLI options
+      $ nextcloud-mcp-server --nextcloud-host=https://cloud.example.com \\
+          --nextcloud-username=admin --nextcloud-password=secret
+
+      # BasicAuth mode with env vars (recommended for credentials)
+      $ export NEXTCLOUD_HOST=https://cloud.example.com
+      $ export NEXTCLOUD_USERNAME=admin
+      $ export NEXTCLOUD_PASSWORD=secret
       $ nextcloud-mcp-server --host 0.0.0.0 --port 8000
 
       # OAuth mode with auto-registration
-      $ nextcloud-mcp-server --oauth
+      $ nextcloud-mcp-server --nextcloud-host=https://cloud.example.com --oauth
 
       # OAuth mode with pre-configured client
-      $ nextcloud-mcp-server --oauth --oauth-client-id=xxx --oauth-client-secret=yyy
+      $ nextcloud-mcp-server --nextcloud-host=https://cloud.example.com --oauth \\
+          --oauth-client-id=xxx --oauth-client-secret=yyy
+
+      # OAuth mode with custom scopes and JWT tokens
+      $ nextcloud-mcp-server --nextcloud-host=https://cloud.example.com --oauth \\
+          --oauth-scopes="openid nc:read" --oauth-token-type=jwt
+
+      # OAuth with public issuer URL (for Docker/proxy setups)
+      $ nextcloud-mcp-server --nextcloud-host=http://app --oauth \\
+          --public-issuer-url=http://localhost:8080
     """
-    # Set OAuth env vars from CLI options if provided
+    # Set env vars from CLI options if provided
+    if nextcloud_host:
+        os.environ["NEXTCLOUD_HOST"] = nextcloud_host
+    if nextcloud_username:
+        os.environ["NEXTCLOUD_USERNAME"] = nextcloud_username
+    if nextcloud_password:
+        os.environ["NEXTCLOUD_PASSWORD"] = nextcloud_password
     if oauth_client_id:
         os.environ["NEXTCLOUD_OIDC_CLIENT_ID"] = oauth_client_id
     if oauth_client_secret:
         os.environ["NEXTCLOUD_OIDC_CLIENT_SECRET"] = oauth_client_secret
     if oauth_storage_path:
         os.environ["NEXTCLOUD_OIDC_CLIENT_STORAGE"] = oauth_storage_path
+    if oauth_scopes:
+        os.environ["NEXTCLOUD_OIDC_SCOPES"] = oauth_scopes
+    if oauth_token_type:
+        os.environ["NEXTCLOUD_OIDC_TOKEN_TYPE"] = oauth_token_type
     if mcp_server_url:
         os.environ["NEXTCLOUD_MCP_SERVER_URL"] = mcp_server_url
+    if public_issuer_url:
+        os.environ["NEXTCLOUD_PUBLIC_ISSUER_URL"] = public_issuer_url
 
     # Force OAuth mode if explicitly requested
     if oauth is True:

nextcloud_mcp_server/auth/__init__.py

@@ -3,6 +3,16 @@
 from .bearer_auth import BearerAuth
 from .client_registration import load_or_register_client, register_client
 from .context_helper import get_client_from_context
+from .scope_authorization import (
+    InsufficientScopeError,
+    ScopeAuthorizationError,
+    check_scopes,
+    get_access_token_scopes,
+    get_required_scopes,
+    has_required_scopes,
+    is_jwt_token,
+    require_scopes,
+)
 from .token_verifier import NextcloudTokenVerifier
 
 __all__ = [
@@ -11,4 +21,12 @@ __all__ = [
     "register_client",
     "load_or_register_client",
     "get_client_from_context",
+    "require_scopes",
+    "ScopeAuthorizationError",
+    "InsufficientScopeError",
+    "check_scopes",
+    "get_access_token_scopes",
+    "get_required_scopes",
+    "has_required_scopes",
+    "is_jwt_token",
 ]

nextcloud_mcp_server/auth/client_registration.py

@@ -68,6 +68,7 @@ async def register_client(
     client_name: str = "Nextcloud MCP Server",
     redirect_uris: list[str] | None = None,
     scopes: str = "openid profile email",
+    token_type: str = "Bearer",
 ) -> ClientInfo:
     """
     Register a new OAuth client with Nextcloud OIDC using dynamic client registration.
@@ -78,6 +79,7 @@ async def register_client(
         client_name: Name of the client application
         redirect_uris: List of redirect URIs (default: http://localhost:8000/oauth/callback)
         scopes: Space-separated list of scopes to request
+        token_type: Type of access tokens to issue (default: "Bearer", also supports "JWT")
 
     Returns:
         ClientInfo with registration details
@@ -96,6 +98,7 @@ async def register_client(
         "grant_types": ["authorization_code", "refresh_token"],
         "response_types": ["code"],
         "scope": scopes,
+        "token_type": token_type,
     }
 
     logger.info(f"Registering OAuth client with Nextcloud: {client_name}")
@@ -215,6 +218,8 @@ async def load_or_register_client(
     storage_path: str | Path,
     client_name: str = "Nextcloud MCP Server",
     redirect_uris: list[str] | None = None,
+    scopes: str = "openid profile email",
+    token_type: str = "Bearer",
 ) -> ClientInfo:
     """
     Load client from storage or register a new one if not found/expired.
@@ -231,6 +236,8 @@ async def load_or_register_client(
         storage_path: Path to store client credentials
         client_name: Name of the client application
         redirect_uris: List of redirect URIs
+        scopes: Space-separated list of scopes to request (default: "openid profile email")
+        token_type: Type of access tokens to issue (default: "Bearer", also supports "JWT")
 
     Returns:
         ClientInfo with valid credentials
@@ -253,6 +260,8 @@ async def load_or_register_client(
         registration_endpoint=registration_endpoint,
         client_name=client_name,
         redirect_uris=redirect_uris,
+        scopes=scopes,
+        token_type=token_type,
     )
 
     # Save to storage

nextcloud_mcp_server/auth/scope_authorization.py

@@ -0,0 +1,278 @@
+"""Scope-based authorization for MCP tools."""
+
+import logging
+from functools import wraps
+from typing import Callable
+
+from mcp.server.auth.middleware.auth_context import get_access_token
+from mcp.server.auth.provider import AccessToken
+from mcp.server.fastmcp import Context
+from mcp.server.fastmcp.utilities.context_injection import find_context_parameter
+
+logger = logging.getLogger(__name__)
+
+
+class ScopeAuthorizationError(Exception):
+    """Raised when a request lacks required scopes."""
+
+    pass
+
+
+class InsufficientScopeError(ScopeAuthorizationError):
+    """Raised when request lacks required scopes (enables step-up auth).
+
+    This exception triggers a 403 response with WWW-Authenticate header
+    containing the missing scopes, allowing clients to perform step-up
+    authorization to obtain additional permissions.
+    """
+
+    def __init__(self, missing_scopes: list[str], message: str | None = None):
+        self.missing_scopes = missing_scopes
+        super().__init__(
+            message or f"Missing required scopes: {', '.join(missing_scopes)}"
+        )
+
+
+def require_scopes(*required_scopes: str):
+    """
+    Decorator to require specific OAuth scopes for MCP tool execution.
+
+    This decorator:
+    1. Stores scope requirements as function metadata (_required_scopes attribute)
+    2. Checks that the access token contains all required scopes before execution
+    3. Raises ScopeAuthorizationError if any required scope is missing
+
+    The stored metadata enables dynamic tool filtering - tools can be hidden from
+    users who lack the necessary scopes.
+
+    Args:
+        *required_scopes: Variable number of scope strings required (e.g., "nc:read", "nc:write")
+
+    Returns:
+        Decorated function that checks scopes before execution
+
+    Example:
+        ```python
+        @mcp.tool()
+        @require_scopes("nc:read")
+        async def nc_notes_get_note(ctx: Context, note_id: int):
+            # This tool requires the nc:read scope
+            ...
+
+        @mcp.tool()
+        @require_scopes("nc:write")
+        async def nc_notes_create_note(ctx: Context, ...):
+            # This tool requires the nc:write scope
+            ...
+        ```
+
+    Raises:
+        ScopeAuthorizationError: If required scopes are not present in the access token
+    """
+
+    def decorator(func: Callable):
+        # Store scope requirements as function metadata for dynamic filtering
+        func._required_scopes = list(required_scopes)  # type: ignore
+
+        # Find which parameter receives the Context (FastMCP injects it by name)
+        context_param_name = find_context_parameter(func)
+
+        @wraps(func)
+        async def wrapper(*args, **kwargs):
+            # Extract context from kwargs (where FastMCP injected it)
+            ctx: Context | None = (
+                kwargs.get(context_param_name) if context_param_name else None
+            )
+
+            if ctx is None:
+                # No context parameter found - likely BasicAuth mode
+                # In BasicAuth mode, all operations are allowed
+                logger.debug(
+                    f"No context parameter for {func.__name__} - allowing (BasicAuth mode)"
+                )
+                return await func(*args, **kwargs)
+
+            # Check if we're in OAuth mode (access token available)
+            access_token: AccessToken | None = getattr(
+                ctx.request_context, "access_token", None
+            )
+
+            if access_token is None:
+                # Not in OAuth mode (BasicAuth or no auth)
+                # In BasicAuth mode, all operations are allowed
+                logger.debug(
+                    f"No access token present for {func.__name__} - allowing (BasicAuth mode)"
+                )
+                return await func(*args, **kwargs)
+
+            # Extract scopes from access token
+            token_scopes = set(access_token.scopes or [])
+            required_scopes_set = set(required_scopes)
+
+            # Check if all required scopes are present
+            missing_scopes = required_scopes_set - token_scopes
+            if missing_scopes:
+                error_msg = (
+                    f"Access denied to {func.__name__}: "
+                    f"Missing required scopes: {', '.join(sorted(missing_scopes))}. "
+                    f"Token has scopes: {', '.join(sorted(token_scopes)) if token_scopes else 'none'}"
+                )
+                logger.warning(error_msg)
+                raise InsufficientScopeError(list(missing_scopes), error_msg)
+
+            # All required scopes present - allow execution
+            logger.debug(
+                f"Scope authorization passed for {func.__name__}: {required_scopes}"
+            )
+            return await func(*args, **kwargs)
+
+        return wrapper
+
+    return decorator
+
+
+def get_access_token_scopes(ctx: Context | None = None) -> set[str]:
+    """
+    Extract scopes from the authenticated user's access token.
+
+    This function uses MCP SDK's contextvar to access the token, which works
+    across all request types including list_tools.
+
+    Args:
+        ctx: FastMCP context object (unused, kept for compatibility)
+
+    Returns:
+        Set of scope strings, empty set if no token or no scopes
+    """
+    # Use MCP SDK's get_access_token() which uses contextvars
+    # This works for all request types, including list_tools
+    access_token: AccessToken | None = get_access_token()
+
+    if access_token is None:
+        logger.debug("No access token found in auth context (likely BasicAuth mode)")
+        return set()
+
+    scopes = set(access_token.scopes or [])
+    logger.info(f"✅ Extracted scopes from access token: {scopes}")
+    return scopes
+
+
+def check_scopes(ctx: Context, *required_scopes: str) -> tuple[bool, set[str]]:
+    """
+    Check if the request context has all required scopes.
+
+    Utility function for manual scope checking without decorator.
+
+    Args:
+        ctx: FastMCP context object
+        *required_scopes: Variable number of required scope strings
+
+    Returns:
+        Tuple of (has_all_scopes: bool, missing_scopes: set[str])
+
+    Example:
+        ```python
+        async def my_tool(ctx: Context):
+            has_scopes, missing = check_scopes(ctx, "nc:read", "nc:write")
+            if not has_scopes:
+                # Handle missing scopes
+                ...
+        ```
+    """
+    token_scopes = get_access_token_scopes(ctx)
+
+    # If no access token, assume BasicAuth mode (all operations allowed)
+    if not token_scopes and getattr(ctx.request_context, "access_token", None) is None:
+        return True, set()
+
+    required_scopes_set = set(required_scopes)
+    missing_scopes = required_scopes_set - token_scopes
+
+    return len(missing_scopes) == 0, missing_scopes
+
+
+def get_required_scopes(func: Callable) -> list[str]:
+    """
+    Extract required scopes from a function decorated with @require_scopes.
+
+    Args:
+        func: Function to check (may be decorated)
+
+    Returns:
+        List of required scope strings, empty list if no scopes required
+
+    Example:
+        ```python
+        @require_scopes("nc:read", "nc:write")
+        async def my_tool():
+            pass
+
+        scopes = get_required_scopes(my_tool)  # ["nc:read", "nc:write"]
+        ```
+    """
+    return getattr(func, "_required_scopes", [])
+
+
+def is_jwt_token() -> bool:
+    """
+    Check if the current access token is in JWT format.
+
+    JWT tokens have 3 parts separated by dots (header.payload.signature).
+    Opaque tokens are random strings without this structure.
+
+    Returns:
+        True if current token is JWT format, False if opaque or no token
+    """
+    access_token: AccessToken | None = get_access_token()
+
+    if access_token is None:
+        logger.debug("No access token found - not JWT")
+        return False
+
+    # JWT tokens have exactly 2 dots (3 parts)
+    token_string = access_token.token
+    is_jwt = "." in token_string and token_string.count(".") == 2
+
+    logger.debug(f"Token format check: is_jwt={is_jwt}")
+    return is_jwt
+
+
+def has_required_scopes(func: Callable, user_scopes: set[str]) -> bool:
+    """
+    Check if a user has all scopes required by a function.
+
+    Used for dynamic tool filtering - determines if a tool should be visible
+    to a user based on their token scopes.
+
+    Args:
+        func: Function decorated with @require_scopes
+        user_scopes: Set of scopes the user possesses
+
+    Returns:
+        True if user has all required scopes (or no scopes required), False otherwise
+
+    Example:
+        ```python
+        @require_scopes("nc:write")
+        async def create_note():
+            pass
+
+        user_scopes = {"nc:read", "nc:write"}
+        can_see = has_required_scopes(create_note, user_scopes)  # True
+
+        limited_user_scopes = {"nc:read"}
+        can_see = has_required_scopes(create_note, limited_user_scopes)  # False
+        ```
+    """
+    required = get_required_scopes(func)
+
+    # No scopes required → always allow
+    if not required:
+        return True
+
+    # Empty user_scopes but scopes required → deny
+    if not user_scopes:
+        return False
+
+    # Check if user has all required scopes
+    return set(required).issubset(user_scopes)

nextcloud_mcp_server/auth/token_verifier.py

@@ -5,6 +5,8 @@ import time
 from typing import Any
 
 import httpx
+import jwt
+from jwt import PyJWKClient
 from mcp.server.auth.provider import AccessToken, TokenVerifier
 
 logger = logging.getLogger(__name__)
@@ -12,22 +14,33 @@ logger = logging.getLogger(__name__)
 
 class NextcloudTokenVerifier(TokenVerifier):
     """
-    Validates access tokens using Nextcloud OIDC userinfo endpoint.
+    Validates access tokens using JWT verification with JWKS or userinfo endpoint fallback.
 
-    This verifier:
-    1. Calls the userinfo endpoint with the bearer token
-    2. Caches successful responses to avoid repeated API calls
-    3. Extracts username from the 'sub' or 'preferred_username' claim
-    4. Optionally supports JWT validation for performance (future enhancement)
+    This verifier supports both JWT and opaque tokens:
+    1. For JWT tokens: Verifies signature with JWKS and extracts scopes from payload
+    2. For opaque tokens: Falls back to userinfo endpoint validation
+    3. Caches successful responses to avoid repeated API calls/verifications
 
-    The userinfo endpoint validates the token and returns user claims if valid,
-    or returns HTTP 400/401 if the token is invalid or expired.
+    JWT validation provides:
+    - Faster validation (no HTTP call needed)
+    - Direct scope extraction from token payload
+    - Signature verification using JWKS
+
+    Userinfo fallback provides:
+    - Support for opaque tokens
+    - Backward compatibility
+    - Additional validation layer
     """
 
     def __init__(
         self,
         nextcloud_host: str,
         userinfo_uri: str,
+        jwks_uri: str | None = None,
+        issuer: str | None = None,
+        introspection_uri: str | None = None,
+        client_id: str | None = None,
+        client_secret: str | None = None,
         cache_ttl: int = 3600,
     ):
         """
@@ -36,26 +49,52 @@ class NextcloudTokenVerifier(TokenVerifier):
         Args:
             nextcloud_host: Base URL of the Nextcloud instance (e.g., https://cloud.example.com)
             userinfo_uri: Full URL to the userinfo endpoint
+            jwks_uri: Full URL to the JWKS endpoint (for JWT verification)
+            issuer: Expected issuer claim value (for JWT verification)
+            introspection_uri: Full URL to the introspection endpoint (for opaque tokens)
+            client_id: OAuth client ID (required for introspection)
+            client_secret: OAuth client secret (required for introspection)
             cache_ttl: Time-to-live for cached tokens in seconds (default: 3600)
         """
         self.nextcloud_host = nextcloud_host.rstrip("/")
         self.userinfo_uri = userinfo_uri
+        self.jwks_uri = jwks_uri
+        self.issuer = issuer
+        self.introspection_uri = introspection_uri
+        self.client_id = client_id
+        self.client_secret = client_secret
         self.cache_ttl = cache_ttl
 
         # Cache: token -> (userinfo, expiry_timestamp)
         self._token_cache: dict[str, tuple[dict[str, Any], float]] = {}
 
-        # HTTP client for userinfo requests
+        # HTTP client for userinfo/introspection requests
         self._client = httpx.AsyncClient(timeout=10.0)
 
+        # PyJWKClient for JWT verification (lazy initialization)
+        self._jwks_client: PyJWKClient | None = None
+        if jwks_uri:
+            logger.info(f"JWT verification enabled with JWKS URI: {jwks_uri}")
+            self._jwks_client = PyJWKClient(jwks_uri, cache_keys=True)
+
+        # Introspection support
+        if introspection_uri and client_id and client_secret:
+            logger.info(f"Token introspection enabled: {introspection_uri}")
+        elif introspection_uri:
+            logger.warning(
+                "Introspection URI provided but missing client credentials - introspection disabled"
+            )
+
     async def verify_token(self, token: str) -> AccessToken | None:
         """
-        Verify a bearer token by calling the userinfo endpoint.
+        Verify a bearer token using JWT verification, introspection, or userinfo endpoint.
 
         This method:
         1. Checks the cache first for recent validations
-        2. Calls the userinfo endpoint if not cached
-        3. Returns AccessToken with username stored in metadata
+        2. Attempts JWT verification if JWKS is configured and token looks like JWT
+        3. Falls back to introspection for opaque tokens (if configured)
+        4. Falls back to userinfo endpoint as last resort
+        5. Returns AccessToken with username and scopes
 
         Args:
             token: The bearer token to verify
@@ -69,13 +108,225 @@ class NextcloudTokenVerifier(TokenVerifier):
             logger.debug("Token found in cache")
             return cached
 
-        # Validate via userinfo endpoint
+        # Try JWT verification first if enabled and token looks like JWT
+        is_jwt_format = self._is_jwt_format(token)
+        logger.debug(
+            f"Token format check: is_jwt_format={is_jwt_format}, _jwks_client={self._jwks_client is not None}"
+        )
+        if self._jwks_client and is_jwt_format:
+            logger.debug("Attempting JWT verification...")
+            jwt_result = self._verify_jwt(token)
+            if jwt_result:
+                logger.info("Token validated via JWT verification")
+                return jwt_result
+            else:
+                logger.warning("JWT verification failed, will try other methods")
+
+        # For opaque tokens, try introspection if available
+        if self.introspection_uri and self.client_id and self.client_secret:
+            logger.debug("Attempting token introspection...")
+            try:
+                introspection_result = await self._verify_via_introspection(token)
+                if introspection_result:
+                    logger.info("Token validated via introspection")
+                    return introspection_result
+            except Exception as e:
+                logger.warning(f"Introspection failed: {e}")
+
+        # Fall back to userinfo endpoint validation (last resort)
+        logger.debug("Attempting userinfo endpoint validation...")
         try:
             return await self._verify_via_userinfo(token)
         except Exception as e:
             logger.warning(f"Token verification failed: {e}")
             return None
 
+    def _is_jwt_format(self, token: str) -> bool:
+        """
+        Check if token looks like a JWT (has 3 parts separated by dots).
+
+        Args:
+            token: The token to check
+
+        Returns:
+            True if token appears to be JWT format
+        """
+        return "." in token and token.count(".") == 2
+
+    def _verify_jwt(self, token: str) -> AccessToken | None:
+        """
+        Verify JWT token with signature validation using JWKS.
+
+        Args:
+            token: The JWT token to verify
+
+        Returns:
+            AccessToken if valid, None if invalid
+        """
+        try:
+            # Get signing key from JWKS
+            signing_key = self._jwks_client.get_signing_key_from_jwt(token)
+
+            # Verify and decode JWT
+            payload = jwt.decode(
+                token,
+                signing_key.key,
+                algorithms=["RS256"],
+                issuer=self.issuer,
+                options={
+                    "verify_signature": True,
+                    "verify_exp": True,
+                    "verify_iat": True,
+                    "verify_iss": True if self.issuer else False,
+                    "verify_aud": False,  # Skip audience validation for Bearer tokens
+                },
+            )
+
+            logger.debug(f"JWT verified successfully for user: {payload.get('sub')}")
+            logger.debug(f"Full JWT payload: {payload}")
+
+            # Extract username (sub claim)
+            username = payload.get("sub")
+            if not username:
+                logger.error("No 'sub' claim found in JWT payload")
+                return None
+
+            # Extract scopes from scope claim (space-separated string)
+            scope_string = payload.get("scope", "")
+            scopes = scope_string.split() if scope_string else []
+            logger.debug(
+                f"Extracted scopes from JWT - scope claim: '{scope_string}' -> scopes list: {scopes}"
+            )
+
+            # Extract expiration
+            exp = payload.get("exp")
+            if not exp:
+                logger.warning("No 'exp' claim in JWT, using default TTL")
+                exp = int(time.time() + self.cache_ttl)
+
+            # Cache the result
+            userinfo = {
+                "sub": username,
+                "scope": scope_string,
+                **{k: v for k, v in payload.items() if k not in ["sub", "scope"]},
+            }
+            self._token_cache[token] = (userinfo, exp)
+
+            return AccessToken(
+                token=token,
+                client_id=payload.get("client_id", ""),
+                scopes=scopes,
+                expires_at=exp,
+                resource=username,  # Store username in resource field (RFC 8707)
+            )
+
+        except jwt.ExpiredSignatureError:
+            logger.info("JWT token has expired")
+            return None
+        except jwt.InvalidIssuerError as e:
+            logger.warning(f"JWT issuer validation failed: {e}")
+            return None
+        except jwt.InvalidTokenError as e:
+            logger.warning(f"JWT validation failed: {e}")
+            return None
+        except Exception as e:
+            logger.error(f"Unexpected error during JWT verification: {e}")
+            return None
+
+    async def _verify_via_introspection(self, token: str) -> AccessToken | None:
+        """
+        Validate token by calling the introspection endpoint (RFC 7662).
+
+        This method validates opaque tokens and retrieves their scopes.
+
+        Args:
+            token: The bearer token to introspect
+
+        Returns:
+            AccessToken if active, None if inactive or invalid
+        """
+        try:
+            # Introspection requires client authentication
+            response = await self._client.post(
+                self.introspection_uri,
+                data={"token": token},
+                auth=(self.client_id, self.client_secret),
+            )
+
+            if response.status_code == 200:
+                introspection_data = response.json()
+
+                # Check if token is active
+                if not introspection_data.get("active", False):
+                    logger.info("Token introspection returned inactive=false")
+                    return None
+
+                logger.debug(
+                    f"Token introspected successfully for user: {introspection_data.get('sub')}"
+                )
+
+                # Extract username
+                username = introspection_data.get("sub") or introspection_data.get(
+                    "username"
+                )
+                if not username:
+                    logger.error("No username found in introspection response")
+                    return None
+
+                # Extract scopes (space-separated string)
+                scope_string = introspection_data.get("scope", "")
+                scopes = scope_string.split() if scope_string else []
+                logger.debug(f"Extracted scopes from introspection: {scopes}")
+
+                # Extract expiration
+                exp = introspection_data.get("exp")
+                if exp:
+                    expiry = float(exp)
+                else:
+                    logger.warning(
+                        "No 'exp' in introspection response, using default TTL"
+                    )
+                    expiry = time.time() + self.cache_ttl
+
+                # Cache the result
+                cache_data = {
+                    "sub": username,
+                    "scope": scope_string,
+                    **{
+                        k: v
+                        for k, v in introspection_data.items()
+                        if k not in ["sub", "scope", "active"]
+                    },
+                }
+                self._token_cache[token] = (cache_data, expiry)
+
+                return AccessToken(
+                    token=token,
+                    client_id=introspection_data.get("client_id", ""),
+                    scopes=scopes,
+                    expires_at=int(expiry),
+                    resource=username,
+                )
+
+            elif response.status_code in (400, 401, 403):
+                logger.info(f"Token introspection failed: HTTP {response.status_code}")
+                return None
+            else:
+                logger.warning(
+                    f"Unexpected response from introspection: {response.status_code}"
+                )
+                return None
+
+        except httpx.TimeoutException:
+            logger.error("Timeout while introspecting token")
+            return None
+        except httpx.RequestError as e:
+            logger.error(f"Network error while introspecting token: {e}")
+            return None
+        except Exception as e:
+            logger.error(f"Unexpected error during token introspection: {e}")
+            return None
+
     async def _verify_via_userinfo(self, token: str) -> AccessToken | None:
         """
         Validate token by calling the userinfo endpoint.

nextcloud_mcp_server/server/calendar.py

@@ -4,6 +4,7 @@ from typing import Optional
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 from nextcloud_mcp_server.models.calendar import (
     Calendar,
@@ -18,6 +19,7 @@ logger = logging.getLogger(__name__)
 def configure_calendar_tools(mcp: FastMCP):
     # Calendar tools
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_list_calendars(ctx: Context) -> ListCalendarsResponse:
         """List all available calendars for the user"""
         client = get_client(ctx)
@@ -27,6 +29,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return ListCalendarsResponse(calendars=calendars, total_count=len(calendars))
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_create_event(
         calendar_name: str,
         title: str,
@@ -102,6 +105,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.create_event(calendar_name, event_data)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_list_events(
         calendar_name: str,
         ctx: Context,
@@ -203,6 +207,7 @@ def configure_calendar_tools(mcp: FastMCP):
             return events
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_get_event(
         calendar_name: str,
         event_uid: str,
@@ -214,6 +219,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return event_data
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_update_event(
         calendar_name: str,
         event_uid: str,
@@ -286,6 +292,7 @@ def configure_calendar_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_delete_event(
         calendar_name: str,
         event_uid: str,
@@ -296,6 +303,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.delete_event(calendar_name, event_uid)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_create_meeting(
         title: str,
         date: str,
@@ -361,6 +369,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.create_event(calendar_name, event_data)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_get_upcoming_events(
         ctx: Context,
         calendar_name: str = "",  # Empty = all calendars
@@ -410,6 +419,7 @@ def configure_calendar_tools(mcp: FastMCP):
             return all_events[:limit]
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_find_availability(
         duration_minutes: int,
         ctx: Context,
@@ -489,6 +499,7 @@ def configure_calendar_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_bulk_operations(
         operation: str,  # "update", "delete", "move"
         ctx: Context,
@@ -737,6 +748,7 @@ def configure_calendar_tools(mcp: FastMCP):
             }
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_manage_calendar(
         action: str,  # "create", "delete", "update", "list"
         ctx: Context,
@@ -805,6 +817,7 @@ def configure_calendar_tools(mcp: FastMCP):
     # ============= Todo/Task Tools =============
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_list_todos(
         calendar_name: str,
         ctx: Context,
@@ -849,6 +862,7 @@ def configure_calendar_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_create_todo(
         calendar_name: str,
         summary: str,
@@ -891,6 +905,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.create_todo(calendar_name, todo_data)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_update_todo(
         calendar_name: str,
         todo_uid: str,
@@ -950,6 +965,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.update_todo(calendar_name, todo_uid, todo_data)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_calendar_delete_todo(
         calendar_name: str,
         todo_uid: str,
@@ -969,6 +985,7 @@ def configure_calendar_tools(mcp: FastMCP):
         return await client.calendar.delete_todo(calendar_name, todo_uid)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_calendar_search_todos(
         ctx: Context,
         status: Optional[str] = None,

nextcloud_mcp_server/server/contacts.py

@@ -2,6 +2,7 @@ import logging
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 
 logger = logging.getLogger(__name__)
@@ -10,18 +11,21 @@ logger = logging.getLogger(__name__)
 def configure_contacts_tools(mcp: FastMCP):
     # Contacts tools
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_contacts_list_addressbooks(ctx: Context):
         """List all addressbooks for the user."""
         client = get_client(ctx)
         return await client.contacts.list_addressbooks()
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_contacts_list_contacts(ctx: Context, *, addressbook: str):
         """List all contacts in the specified addressbook."""
         client = get_client(ctx)
         return await client.contacts.list_contacts(addressbook=addressbook)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_contacts_create_addressbook(
         ctx: Context, *, name: str, display_name: str
     ):
@@ -37,12 +41,14 @@ def configure_contacts_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_contacts_delete_addressbook(ctx: Context, *, name: str):
         """Delete an addressbook."""
         client = get_client(ctx)
         return await client.contacts.delete_addressbook(name=name)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_contacts_create_contact(
         ctx: Context, *, addressbook: str, uid: str, contact_data: dict
     ):
@@ -59,12 +65,14 @@ def configure_contacts_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_contacts_delete_contact(ctx: Context, *, addressbook: str, uid: str):
         """Delete a contact."""
         client = get_client(ctx)
         return await client.contacts.delete_contact(addressbook=addressbook, uid=uid)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_contacts_update_contact(
         ctx: Context, *, addressbook: str, uid: str, contact_data: dict, etag: str = ""
     ):

nextcloud_mcp_server/server/cookbook.py

@@ -5,6 +5,7 @@ from mcp.server.fastmcp import Context, FastMCP
 from mcp.shared.exceptions import McpError
 from mcp.types import ErrorData
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 from nextcloud_mcp_server.models.cookbook import (
     Category,
@@ -70,6 +71,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_import_recipe(url: str, ctx: Context) -> ImportRecipeResponse:
         """Import a recipe from a URL using schema.org metadata.
 
@@ -126,6 +128,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_list_recipes(ctx: Context) -> ListRecipesResponse:
         """Get all recipes in the database"""
         client = get_client(ctx)
@@ -150,6 +153,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_get_recipe(recipe_id: int, ctx: Context) -> Recipe:
         """Get a specific recipe by its ID"""
         client = get_client(ctx)
@@ -174,6 +178,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_create_recipe(
         name: str,
         description: str | None = None,
@@ -252,6 +257,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_update_recipe(
         recipe_id: int,
         name: str | None = None,
@@ -340,6 +346,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_delete_recipe(
         recipe_id: int, ctx: Context
     ) -> DeleteRecipeResponse:
@@ -374,6 +381,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_search_recipes(
         query: str, ctx: Context
     ) -> SearchRecipesResponse:
@@ -409,6 +417,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_list_categories(ctx: Context) -> ListCategoriesResponse:
         """Get all known categories.
 
@@ -435,6 +444,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_get_recipes_in_category(
         category: str, ctx: Context
     ) -> ListRecipesResponse:
@@ -470,6 +480,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_list_keywords(ctx: Context) -> ListKeywordsResponse:
         """Get all known keywords/tags"""
         client = get_client(ctx)
@@ -494,6 +505,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_cookbook_get_recipes_with_keywords(
         keywords: list[str], ctx: Context
     ) -> ListRecipesResponse:
@@ -527,6 +539,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_set_config(
         folder: str | None = None,
         update_interval: int | None = None,
@@ -569,6 +582,7 @@ def configure_cookbook_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_cookbook_reindex(ctx: Context) -> ReindexResponse:
         """Trigger a rescan of all recipes into the caching database.
 

nextcloud_mcp_server/server/deck.py

@@ -3,6 +3,7 @@ from typing import Optional
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 from nextcloud_mcp_server.models.deck import (
     CardOperationResponse,
@@ -116,6 +117,7 @@ def configure_deck_tools(mcp: FastMCP):
     # Read Tools (converted from resources)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_boards(ctx: Context) -> list[DeckBoard]:
         """Get all Nextcloud Deck boards"""
         client = get_client(ctx)
@@ -123,6 +125,7 @@ def configure_deck_tools(mcp: FastMCP):
         return boards
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_board(ctx: Context, board_id: int) -> DeckBoard:
         """Get details of a specific Nextcloud Deck board"""
         client = get_client(ctx)
@@ -130,6 +133,7 @@ def configure_deck_tools(mcp: FastMCP):
         return board
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_stacks(ctx: Context, board_id: int) -> list[DeckStack]:
         """Get all stacks in a Nextcloud Deck board"""
         client = get_client(ctx)
@@ -137,6 +141,7 @@ def configure_deck_tools(mcp: FastMCP):
         return stacks
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_stack(ctx: Context, board_id: int, stack_id: int) -> DeckStack:
         """Get details of a specific Nextcloud Deck stack"""
         client = get_client(ctx)
@@ -144,6 +149,7 @@ def configure_deck_tools(mcp: FastMCP):
         return stack
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_cards(
         ctx: Context, board_id: int, stack_id: int
     ) -> list[DeckCard]:
@@ -155,6 +161,7 @@ def configure_deck_tools(mcp: FastMCP):
         return []
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int
     ) -> DeckCard:
@@ -164,6 +171,7 @@ def configure_deck_tools(mcp: FastMCP):
         return card
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_labels(ctx: Context, board_id: int) -> list[DeckLabel]:
         """Get all labels in a Nextcloud Deck board"""
         client = get_client(ctx)
@@ -171,6 +179,7 @@ def configure_deck_tools(mcp: FastMCP):
         return board.labels
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def deck_get_label(ctx: Context, board_id: int, label_id: int) -> DeckLabel:
         """Get details of a specific Nextcloud Deck label"""
         client = get_client(ctx)
@@ -180,6 +189,7 @@ def configure_deck_tools(mcp: FastMCP):
     # Create/Update/Delete Tools
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_create_board(
         ctx: Context, title: str, color: str
     ) -> CreateBoardResponse:
@@ -196,6 +206,7 @@ def configure_deck_tools(mcp: FastMCP):
     # Stack Tools
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_create_stack(
         ctx: Context, board_id: int, title: str, order: int
     ) -> CreateStackResponse:
@@ -211,6 +222,7 @@ def configure_deck_tools(mcp: FastMCP):
         return CreateStackResponse(id=stack.id, title=stack.title, order=stack.order)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_update_stack(
         ctx: Context,
         board_id: int,
@@ -236,6 +248,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_delete_stack(
         ctx: Context, board_id: int, stack_id: int
     ) -> StackOperationResponse:
@@ -256,6 +269,7 @@ def configure_deck_tools(mcp: FastMCP):
 
     # Card Tools
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_create_card(
         ctx: Context,
         board_id: int,
@@ -289,6 +303,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_update_card(
         ctx: Context,
         board_id: int,
@@ -341,6 +356,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_delete_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int
     ) -> CardOperationResponse:
@@ -362,6 +378,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_archive_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int
     ) -> CardOperationResponse:
@@ -383,6 +400,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_unarchive_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int
     ) -> CardOperationResponse:
@@ -404,6 +422,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_reorder_card(
         ctx: Context,
         board_id: int,
@@ -435,6 +454,7 @@ def configure_deck_tools(mcp: FastMCP):
 
     # Label Tools
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_create_label(
         ctx: Context, board_id: int, title: str, color: str
     ) -> CreateLabelResponse:
@@ -450,6 +470,7 @@ def configure_deck_tools(mcp: FastMCP):
         return CreateLabelResponse(id=label.id, title=label.title, color=label.color)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_update_label(
         ctx: Context,
         board_id: int,
@@ -475,6 +496,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_delete_label(
         ctx: Context, board_id: int, label_id: int
     ) -> LabelOperationResponse:
@@ -495,6 +517,7 @@ def configure_deck_tools(mcp: FastMCP):
 
     # Card-Label Assignment Tools
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_assign_label_to_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int, label_id: int
     ) -> CardOperationResponse:
@@ -517,6 +540,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_remove_label_from_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int, label_id: int
     ) -> CardOperationResponse:
@@ -540,6 +564,7 @@ def configure_deck_tools(mcp: FastMCP):
 
     # Card-User Assignment Tools
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_assign_user_to_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int, user_id: str
     ) -> CardOperationResponse:
@@ -562,6 +587,7 @@ def configure_deck_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def deck_unassign_user_from_card(
         ctx: Context, board_id: int, stack_id: int, card_id: int, user_id: str
     ) -> CardOperationResponse:

nextcloud_mcp_server/server/notes.py

@@ -5,6 +5,7 @@ from mcp.server.fastmcp import Context, FastMCP
 from mcp.shared.exceptions import McpError
 from mcp.types import ErrorData
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 from nextcloud_mcp_server.models.notes import (
     AppendContentResponse,
@@ -84,10 +85,11 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_notes_create_note(
         title: str, content: str, category: str, ctx: Context
     ) -> CreateNoteResponse:
-        """Create a new note"""
+        """Create a new note (requires nc:write scope)"""
         client = get_client(ctx)
         try:
             note_data = await client.notes.create_note(
@@ -129,6 +131,7 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_notes_update_note(
         note_id: int,
         etag: str,
@@ -137,7 +140,7 @@ def configure_notes_tools(mcp: FastMCP):
         category: str | None,
         ctx: Context,
     ) -> UpdateNoteResponse:
-        """Update an existing note's title, content, or category.
+        """Update an existing note's title, content, or category (requires nc:write scope).
 
         REQUIRED: etag parameter must be provided to prevent overwriting concurrent changes.
         Get the current ETag by first retrieving the note using nc_notes_get_note tool.
@@ -193,6 +196,7 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_notes_append_content(
         note_id: int, content: str, ctx: Context
     ) -> AppendContentResponse:
@@ -242,8 +246,9 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_notes_search_notes(query: str, ctx: Context) -> SearchNotesResponse:
-        """Search notes by title or content, returning only id, title, and category."""
+        """Search notes by title or content, returning only id, title, and category (requires nc:read scope)."""
         client = get_client(ctx)
         try:
             search_results_raw = await client.notes_search_notes(query=query)
@@ -287,8 +292,9 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_notes_get_note(note_id: int, ctx: Context) -> Note:
-        """Get a specific note by its ID"""
+        """Get a specific note by its ID (requires nc:read scope)"""
         client = get_client(ctx)
         try:
             note_data = await client.notes.get_note(note_id)
@@ -315,6 +321,7 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_notes_get_attachment(
         note_id: int, attachment_filename: str, ctx: Context
     ) -> dict[str, str]:
@@ -360,6 +367,7 @@ def configure_notes_tools(mcp: FastMCP):
                 )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_notes_delete_note(note_id: int, ctx: Context) -> DeleteNoteResponse:
         """Delete a note permanently"""
         logger.info("Deleting note %s", note_id)

nextcloud_mcp_server/server/sharing.py

@@ -4,6 +4,7 @@ import json
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 
 
@@ -15,6 +16,7 @@ def configure_sharing_tools(mcp: FastMCP):
     """
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_share_create(
         path: str,
         share_with: str,
@@ -53,6 +55,7 @@ def configure_sharing_tools(mcp: FastMCP):
         return json.dumps(share_data, indent=2)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_share_delete(share_id: int, ctx: Context) -> str:
         """Delete a share by its ID.
 
@@ -71,6 +74,7 @@ def configure_sharing_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_share_get(share_id: int, ctx: Context) -> str:
         """Get information about a specific share.
 
@@ -88,6 +92,7 @@ def configure_sharing_tools(mcp: FastMCP):
         return json.dumps(share_data, indent=2)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_share_list(
         ctx: Context, path: str | None = None, shared_with_me: bool = False
     ) -> str:
@@ -108,6 +113,7 @@ def configure_sharing_tools(mcp: FastMCP):
         return json.dumps(shares, indent=2)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_share_update(share_id: int, permissions: int, ctx: Context) -> str:
         """Update the permissions of an existing share.
 

nextcloud_mcp_server/server/tables.py

@@ -2,6 +2,7 @@ import logging
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 
 logger = logging.getLogger(__name__)
@@ -10,18 +11,21 @@ logger = logging.getLogger(__name__)
 def configure_tables_tools(mcp: FastMCP):
     # Tables tools
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_tables_list_tables(ctx: Context):
         """List all tables available to the user"""
         client = get_client(ctx)
         return await client.tables.list_tables()
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_tables_get_schema(table_id: int, ctx: Context):
         """Get the schema/structure of a specific table including columns and views"""
         client = get_client(ctx)
         return await client.tables.get_table_schema(table_id)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_tables_read_table(
         table_id: int,
         ctx: Context,
@@ -33,6 +37,7 @@ def configure_tables_tools(mcp: FastMCP):
         return await client.tables.get_table_rows(table_id, limit, offset)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_tables_insert_row(table_id: int, data: dict, ctx: Context):
         """Insert a new row into a table.
 
@@ -42,6 +47,7 @@ def configure_tables_tools(mcp: FastMCP):
         return await client.tables.create_row(table_id, data)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_tables_update_row(row_id: int, data: dict, ctx: Context):
         """Update an existing row in a table.
 
@@ -51,6 +57,7 @@ def configure_tables_tools(mcp: FastMCP):
         return await client.tables.update_row(row_id, data)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_tables_delete_row(row_id: int, ctx: Context):
         """Delete a row from a table"""
         client = get_client(ctx)

nextcloud_mcp_server/server/webdav.py

@@ -2,6 +2,7 @@ import logging
 
 from mcp.server.fastmcp import Context, FastMCP
 
+from nextcloud_mcp_server.auth import require_scopes
 from nextcloud_mcp_server.context import get_client
 from nextcloud_mcp_server.models import FileInfo, SearchFilesResponse
 
@@ -11,6 +12,7 @@ logger = logging.getLogger(__name__)
 def configure_webdav_tools(mcp: FastMCP):
     # WebDAV file system tools
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_list_directory(ctx: Context, path: str = ""):
         """List files and directories in the specified NextCloud path.
 
@@ -24,6 +26,7 @@ def configure_webdav_tools(mcp: FastMCP):
         return await client.webdav.list_directory(path)
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_read_file(path: str, ctx: Context):
         """Read the content of a file from NextCloud.
 
@@ -62,6 +65,7 @@ def configure_webdav_tools(mcp: FastMCP):
         }
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_webdav_write_file(
         path: str, content: str, ctx: Context, content_type: str | None = None
     ):
@@ -89,6 +93,7 @@ def configure_webdav_tools(mcp: FastMCP):
         return await client.webdav.write_file(path, content_bytes, content_type)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_webdav_create_directory(path: str, ctx: Context):
         """Create a directory in NextCloud.
 
@@ -102,6 +107,7 @@ def configure_webdav_tools(mcp: FastMCP):
         return await client.webdav.create_directory(path)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_webdav_delete_resource(path: str, ctx: Context):
         """Delete a file or directory in NextCloud.
 
@@ -115,6 +121,7 @@ def configure_webdav_tools(mcp: FastMCP):
         return await client.webdav.delete_resource(path)
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_webdav_move_resource(
         source_path: str, destination_path: str, ctx: Context, overwrite: bool = False
     ):
@@ -134,6 +141,7 @@ def configure_webdav_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:write")
     async def nc_webdav_copy_resource(
         source_path: str, destination_path: str, ctx: Context, overwrite: bool = False
     ):
@@ -153,6 +161,7 @@ def configure_webdav_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_search_files(
         ctx: Context,
         scope: str = "",
@@ -268,6 +277,7 @@ def configure_webdav_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_find_by_name(
         pattern: str, ctx: Context, scope: str = "", limit: int | None = None
     ) -> SearchFilesResponse:
@@ -294,6 +304,7 @@ def configure_webdav_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_find_by_type(
         mime_type: str, ctx: Context, scope: str = "", limit: int | None = None
     ) -> SearchFilesResponse:
@@ -320,6 +331,7 @@ def configure_webdav_tools(mcp: FastMCP):
         )
 
     @mcp.tool()
+    @require_scopes("nc:read")
     async def nc_webdav_list_favorites(
         ctx: Context, scope: str = "", limit: int | None = None
     ) -> SearchFilesResponse:

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "nextcloud-mcp-server"
-version = "0.17.0"
+version = "0.17.1"
 description = "Model Context Protocol (MCP) server for Nextcloud integration - enables AI assistants to interact with Nextcloud data"
 authors = [
     {name = "Chris Coutinho", email = "chris@coutinho.io"}
@@ -18,6 +18,7 @@ dependencies = [
     "pydantic>=2.11.4",
     "click>=8.1.8",
     "caldav",
+    "pyjwt[crypto]>=2.8.0",  # JWT validation with RSA support
 ]
 classifiers = [
     "Development Status :: 4 - Beta",
@@ -40,7 +41,7 @@ Changelog = "https://github.com/cbcoutinho/nextcloud-mcp-server/blob/master/CHAN
 
 [tool.pytest.ini_options]
 anyio_mode = "auto"
-addopts = "-p no:asyncio"  # Disable pytest-asyncio plugin, use only anyio
+addopts = "-p no:asyncio -x"  # Disable pytest-asyncio plugin, use only anyio
 log_cli = 1
 log_cli_level = "ERROR"
 log_level = "ERROR"

scripts/add_scope_decorators.py

@@ -0,0 +1,307 @@
+#!/usr/bin/env python3
+"""Script to automatically add @require_scopes decorators to MCP tools.
+
+This script parses server module files and adds appropriate scope decorators
+based on the operation type (read vs write).
+
+Usage:
+    python scripts/add_scope_decorators.py [--dry-run] [--file FILE]
+"""
+
+import argparse
+import ast
+import re
+from pathlib import Path
+from typing import List, Tuple
+
+# Operation patterns for classification
+READ_PATTERNS = [
+    r".*_get_.*",
+    r".*_get$",
+    r".*_list_.*",
+    r".*_list$",
+    r".*_search_.*",
+    r".*_search$",
+    r".*_read_.*",
+    r".*_read$",
+    r".*_find_.*",
+    r".*_find$",
+    r".*_fetch_.*",
+    r".*_fetch$",
+    r".*_retrieve_.*",
+    r".*_retrieve$",
+]
+
+WRITE_PATTERNS = [
+    r".*_create_.*",
+    r".*_create$",
+    r".*_update_.*",
+    r".*_update$",
+    r".*_delete_.*",
+    r".*_delete$",
+    r".*_append_.*",
+    r".*_append$",
+    r".*_modify_.*",
+    r".*_modify$",
+    r".*_set_.*",
+    r".*_set$",
+    r".*_add_.*",
+    r".*_add$",
+    r".*_remove_.*",
+    r".*_remove$",
+    r".*_edit_.*",
+    r".*_edit$",
+    r".*_move_.*",
+    r".*_move$",
+    r".*_copy_.*",
+    r".*_copy$",
+    r".*_upload_.*",
+    r".*_upload$",
+    r".*_download_.*",
+    r".*_download$",
+    r".*_share_.*",
+    r".*_share$",
+    r".*_unshare_.*",
+    r".*_unshare$",
+    r".*_bulk_.*",  # Bulk operations are typically writes
+]
+
+
+def classify_operation(func_name: str) -> str | None:
+    """Classify a function as read or write operation.
+
+    Args:
+        func_name: Function name to classify
+
+    Returns:
+        "nc:read", "nc:write", or None if cannot classify
+    """
+    # Check write patterns first (more specific)
+    for pattern in WRITE_PATTERNS:
+        if re.match(pattern, func_name):
+            return "nc:write"
+
+    # Check read patterns
+    for pattern in READ_PATTERNS:
+        if re.match(pattern, func_name):
+            return "nc:read"
+
+    return None
+
+
+def has_scope_decorator(decorators: List[ast.expr]) -> bool:
+    """Check if function already has @require_scopes decorator."""
+    for decorator in decorators:
+        if isinstance(decorator, ast.Call):
+            if (
+                isinstance(decorator.func, ast.Name)
+                and decorator.func.id == "require_scopes"
+            ):
+                return True
+        elif isinstance(decorator, ast.Name) and decorator.name == "require_scopes":
+            return True
+    return False
+
+
+def has_mcp_tool_decorator(decorators: List[ast.expr]) -> bool:
+    """Check if function has @mcp.tool() decorator."""
+    for decorator in decorators:
+        if isinstance(decorator, ast.Call):
+            if isinstance(decorator.func, ast.Attribute):
+                if decorator.func.attr == "tool":
+                    return True
+    return False
+
+
+def find_tools_needing_decorators(
+    file_path: Path, verbose: bool = False
+) -> List[Tuple[str, int, str]]:
+    """Find all tools that need scope decorators.
+
+    Returns:
+        List of (function_name, line_number, required_scope)
+    """
+    with open(file_path) as f:
+        content = f.read()
+
+    try:
+        tree = ast.parse(content)
+    except SyntaxError as e:
+        print(f"  ⚠️  Syntax error in {file_path}: {e}")
+        return []
+
+    tools_to_update = []
+    total_functions = 0
+    mcp_tools = 0
+    already_has_scope = 0
+    cannot_classify = 0
+
+    for node in ast.walk(tree):
+        if isinstance(node, ast.FunctionDef):
+            total_functions += 1
+
+            if verbose and node.decorator_list:
+                decorators_str = [
+                    ast.unparse(d) if hasattr(ast, "unparse") else str(d)
+                    for d in node.decorator_list
+                ]
+                print(f"  Function {node.name} has decorators: {decorators_str}")
+
+            # Check if it's an MCP tool
+            if not has_mcp_tool_decorator(node.decorator_list):
+                continue
+
+            mcp_tools += 1
+
+            # Check if it already has scope decorator
+            if has_scope_decorator(node.decorator_list):
+                already_has_scope += 1
+                continue
+
+            # Classify operation
+            scope = classify_operation(node.name)
+            if scope:
+                tools_to_update.append((node.name, node.lineno, scope))
+            else:
+                cannot_classify += 1
+                if verbose:
+                    print(f"  ⚠️  Cannot classify: {node.name}")
+
+    if verbose:
+        print(
+            f"  Debug: total_functions={total_functions}, mcp_tools={mcp_tools}, already_has_scope={already_has_scope}, cannot_classify={cannot_classify}"
+        )
+
+    return tools_to_update
+
+
+def add_decorator_to_file(
+    file_path: Path, dry_run: bool = False, verbose: bool = False
+) -> int:
+    """Add @require_scopes decorators to tools in a file.
+
+    Returns:
+        Number of decorators added
+    """
+    tools = find_tools_needing_decorators(file_path, verbose=verbose)
+
+    if not tools:
+        return 0
+
+    print(f"\n📝 {file_path.relative_to(Path.cwd())}")
+
+    with open(file_path) as f:
+        lines = f.readlines()
+
+    # Check if require_scopes is already imported
+    has_import = False
+    import_line_idx = None
+    for i, line in enumerate(lines):
+        if "from nextcloud_mcp_server.auth import" in line and "require_scopes" in line:
+            has_import = True
+            break
+        elif "from nextcloud_mcp_server.auth import" in line:
+            import_line_idx = i
+
+    # Add import if needed
+    if not has_import:
+        if import_line_idx is not None:
+            # Add require_scopes to existing import
+            old_line = lines[import_line_idx]
+            if "(" in old_line:
+                # Multi-line import
+                print(
+                    "  ⚠️  Multi-line import detected, please add manually: from nextcloud_mcp_server.auth import require_scopes"
+                )
+            else:
+                # Single line import - add require_scopes
+                lines[import_line_idx] = (
+                    old_line.rstrip().rstrip(")").rstrip() + ", require_scopes)\n"
+                )
+                print("  ✓ Added require_scopes to import")
+        else:
+            # No auth import exists, add new import
+            # Find first import line
+            for i, line in enumerate(lines):
+                if line.startswith("from nextcloud_mcp_server"):
+                    lines.insert(
+                        i, "from nextcloud_mcp_server.auth import require_scopes\n"
+                    )
+                    print(
+                        "  ✓ Added import: from nextcloud_mcp_server.auth import require_scopes"
+                    )
+                    break
+
+    # Add decorators to tools (in reverse order to preserve line numbers)
+    for func_name, line_num, scope in reversed(tools):
+        # Find the @mcp.tool() decorator line
+        for i in range(line_num - 1, max(0, line_num - 10), -1):
+            if "@mcp.tool()" in lines[i]:
+                # Get indentation from @mcp.tool() line
+                indent = len(lines[i]) - len(lines[i].lstrip())
+                decorator_line = " " * indent + f'@require_scopes("{scope}")\n'
+                lines.insert(i + 1, decorator_line)
+                print(f'  ✓ {func_name}:{line_num} → @require_scopes("{scope}")')
+                break
+
+    if not dry_run:
+        with open(file_path, "w") as f:
+            f.writelines(lines)
+        print("  💾 Saved changes")
+    else:
+        print("  🔍 DRY RUN - no changes written")
+
+    return len(tools)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Add @require_scopes decorators to MCP tools"
+    )
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Show what would be changed without modifying files",
+    )
+    parser.add_argument(
+        "--file",
+        type=Path,
+        help="Process a single file instead of all server modules",
+    )
+    parser.add_argument(
+        "--verbose",
+        "-v",
+        action="store_true",
+        help="Show debug information",
+    )
+    args = parser.parse_args()
+
+    server_dir = Path(__file__).parent.parent / "nextcloud_mcp_server" / "server"
+
+    if args.file:
+        files = [args.file]
+    else:
+        files = sorted(server_dir.glob("*.py"))
+        files = [f for f in files if f.name != "__init__.py"]
+
+    print("🔍 Scanning for tools needing scope decorators...")
+    print(
+        f"   {'DRY RUN MODE - No changes will be made' if args.dry_run else 'LIVE MODE - Files will be modified'}"
+    )
+
+    total_added = 0
+    for file_path in files:
+        added = add_decorator_to_file(
+            file_path, dry_run=args.dry_run, verbose=args.verbose
+        )
+        total_added += added
+
+    print(f"\n{'📊 Summary (dry run)' if args.dry_run else '✅ Complete'}")
+    print(f"   Total decorators added: {total_added}")
+
+    if args.dry_run:
+        print("\n💡 Run without --dry-run to apply changes")
+
+
+if __name__ == "__main__":
+    main()

scripts/add_scope_decorators_simple.py

@@ -0,0 +1,232 @@
+#!/usr/bin/env python3
+"""Simpler script to add @require_scopes decorators using regex.
+
+This script uses regex patterns to find @mcp.tool() decorators and adds
+the appropriate @require_scopes decorator based on function name patterns.
+
+Usage:
+    python scripts/add_scope_decorators_simple.py [--dry-run]
+"""
+
+import argparse
+import re
+from pathlib import Path
+
+# Operation patterns for classification
+READ_KEYWORDS = [
+    "get",
+    "list",
+    "search",
+    "read",
+    "find",
+    "fetch",
+    "retrieve",
+    "upcoming",
+]
+WRITE_KEYWORDS = [
+    "create",
+    "update",
+    "delete",
+    "append",
+    "modify",
+    "set",
+    "add",
+    "remove",
+    "edit",
+    "move",
+    "copy",
+    "upload",
+    "download",
+    "share",
+    "unshare",
+    "bulk",
+    "manage",
+    "import",
+    "reindex",
+    "archive",
+    "unarchive",
+    "reorder",
+    "assign",
+    "unassign",
+    "insert",
+    "write",
+]
+
+
+def classify_function(func_name: str) -> str | None:
+    """Classify a function name as read or write operation."""
+    func_lower = func_name.lower()
+
+    # Check write keywords first (more specific)
+    for keyword in WRITE_KEYWORDS:
+        if f"_{keyword}_" in func_lower or func_lower.endswith(f"_{keyword}"):
+            return "nc:write"
+
+    # Check read keywords
+    for keyword in READ_KEYWORDS:
+        if f"_{keyword}_" in func_lower or func_lower.endswith(f"_{keyword}"):
+            return "nc:read"
+
+    return None
+
+
+def process_file(file_path: Path, dry_run: bool = False) -> int:
+    """Process a single file to add @require_scopes decorators.
+
+    Returns:
+        Number of decorators added
+    """
+    with open(file_path) as f:
+        lines = f.readlines()
+
+    # Check if require_scopes is already imported
+    has_import = False
+    import_line_idx = None
+
+    for i, line in enumerate(lines):
+        if "from nextcloud_mcp_server.auth import" in line:
+            if "require_scopes" in line:
+                has_import = True
+            else:
+                import_line_idx = i
+
+    modified = False
+    decorators_added = 0
+
+    # Find all @mcp.tool() decorators
+    i = 0
+    while i < len(lines):
+        line = lines[i]
+
+        # Look for @mcp.tool() decorator
+        if re.match(r"\s*@mcp\.tool\(\)", line):
+            # Check if next line already has @require_scopes
+            if i + 1 < len(lines) and "@require_scopes" in lines[i + 1]:
+                i += 1
+                continue
+
+            # Find the function definition (should be on next line or after other decorators)
+            func_line_idx = i + 1
+            while func_line_idx < len(lines) and not lines[
+                func_line_idx
+            ].strip().startswith("async def"):
+                func_line_idx += 1
+
+            if func_line_idx >= len(lines):
+                i += 1
+                continue
+
+            # Extract function name
+            func_match = re.match(r"\s*async def (\w+)\(", lines[func_line_idx])
+            if not func_match:
+                i += 1
+                continue
+
+            func_name = func_match.group(1)
+            scope = classify_function(func_name)
+
+            if scope:
+                # Get indentation from @mcp.tool() line
+                indent = len(line) - len(line.lstrip())
+                decorator_line = " " * indent + f'@require_scopes("{scope}")\n'
+
+                # Insert after @mcp.tool()
+                lines.insert(i + 1, decorator_line)
+                decorators_added += 1
+                modified = True
+                print(f'  ✓ {func_name} → @require_scopes("{scope}")')
+            else:
+                print(f"  ⚠️  Cannot classify: {func_name}")
+
+        i += 1
+
+    # Add import if needed and decorators were added
+    if decorators_added > 0 and not has_import:
+        if import_line_idx is not None:
+            # Add to existing import
+            old_line = lines[import_line_idx]
+            if old_line.rstrip().endswith(")"):
+                lines[import_line_idx] = old_line.rstrip()[:-1] + ", require_scopes)\n"
+            else:
+                lines[import_line_idx] = old_line.rstrip() + ", require_scopes\n"
+            print("  ✓ Added require_scopes to existing import")
+            modified = True
+        else:
+            # No auth import exists, add new import after last 'from nextcloud_mcp_server' import
+            last_nc_import_idx = None
+            for i, line in enumerate(lines):
+                if line.startswith("from nextcloud_mcp_server"):
+                    last_nc_import_idx = i
+
+            if last_nc_import_idx is not None:
+                lines.insert(
+                    last_nc_import_idx + 1,
+                    "from nextcloud_mcp_server.auth import require_scopes\n",
+                )
+                print(
+                    "  ✓ Added new import: from nextcloud_mcp_server.auth import require_scopes"
+                )
+                modified = True
+            else:
+                print("  ⚠️  Could not find place to add require_scopes import")
+
+    # Write changes
+    if modified and not dry_run:
+        with open(file_path, "w") as f:
+            f.writelines(lines)
+        print(f"  💾 Saved changes to {file_path.name}")
+    elif dry_run and decorators_added > 0:
+        print(f"  🔍 DRY RUN - would add {decorators_added} decorators")
+
+    return decorators_added
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Add @require_scopes decorators to MCP tools"
+    )
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Show what would be changed without modifying files",
+    )
+    parser.add_argument(
+        "--file",
+        type=Path,
+        help="Process a single file instead of all server modules",
+    )
+    args = parser.parse_args()
+
+    server_dir = Path(__file__).parent.parent / "nextcloud_mcp_server" / "server"
+
+    if args.file:
+        files = [args.file]
+    else:
+        files = sorted(server_dir.glob("*.py"))
+        files = [f for f in files if f.name != "__init__.py"]
+
+    print("🔍 Scanning for tools needing scope decorators...")
+    print(
+        f"   {'DRY RUN MODE - No changes will be made' if args.dry_run else 'LIVE MODE - Files will be modified'}"
+    )
+
+    total_added = 0
+    for file_path in files:
+        file_path = file_path.resolve()  # Convert to absolute path
+        try:
+            display_path = file_path.relative_to(Path.cwd())
+        except ValueError:
+            display_path = file_path.name
+        print(f"\n📝 {display_path}")
+        added = process_file(file_path, dry_run=args.dry_run)
+        total_added += added
+
+    print(f"\n{'📊 Summary (dry run)' if args.dry_run else '✅ Complete'}")
+    print(f"   Total decorators added: {total_added}")
+
+    if args.dry_run and total_added > 0:
+        print("\n💡 Run without --dry-run to apply changes")
+
+
+if __name__ == "__main__":
+    main()

tests/load/README_OAUTH.md

@@ -145,7 +145,7 @@ uv run python -m tests.load.oauth_benchmark -u 2 -d 30 --verbose
 | `--users` | `-u` | 2 | Number of concurrent users (dynamically created) |
 | `--duration` | `-d` | 30.0 | Test duration in seconds |
 | `--warmup` | `-w` | 5.0 | Warmup period before metrics collection (seconds) |
-| `--url` | | `http://127.0.0.1:8001/mcp` | MCP OAuth server URL |
+| `--url` | | `http://localhost:8001/mcp` | MCP OAuth server URL |
 | `--output` | `-o` | None | JSON output file path |
 | `--workload` | | `mixed` | Workload type: mixed, sharing, collaboration, baseline |
 | `--user-prefix` | | `loadtest` | Prefix for dynamically created usernames |

tests/load/benchmark.py

@@ -414,7 +414,7 @@ async def show_progress(
 @click.option(
     "--url",
     "-u",
-    default="http://127.0.0.1:8000/mcp",
+    default="http://localhost:8000/mcp",
     show_default=True,
     help="MCP server URL",
 )
@@ -463,7 +463,7 @@ def main(
         uv run python -m tests.load.benchmark -c 20 -d 60 --output results.json
 
         # Test OAuth server on port 8001
-        uv run python -m tests.load.benchmark --url http://127.0.0.1:8001/mcp
+        uv run python -m tests.load.benchmark --url http://localhost:8001/mcp
     """
     if verbose:
         logging.getLogger().setLevel(logging.DEBUG)

tests/load/oauth_benchmark.py

@@ -51,7 +51,7 @@ class OAuthCallbackServer:
     correlation, and stores them in a shared dictionary.
     """
 
-    def __init__(self, host: str = "127.0.0.1", port: int = 8081):
+    def __init__(self, host: str = "localhost", port: int = 8081):
         self.host = host
         self.port = port
         self.auth_states: dict[str, str] = {}
@@ -363,13 +363,13 @@ async def run_oauth_benchmark(
     try:
         # Get environment variables
         nextcloud_host = os.getenv("NEXTCLOUD_HOST", "http://localhost:8080")
-        callback_url = "http://127.0.0.1:8081/callback"
+        callback_url = "http://localhost:8081/callback"
 
         # Step 1: Start OAuth callback server
         print("Step 1/6: Starting OAuth callback server...")
-        callback_server = OAuthCallbackServer(host="127.0.0.1", port=8081)
+        callback_server = OAuthCallbackServer(host="localhost", port=8081)
         callback_server.start()
-        print("✓ Callback server listening on http://127.0.0.1:8081\n")
+        print("✓ Callback server listening on http://localhost:8081\n")
 
         # Step 2: Discover OIDC endpoints
         print("Step 2/6: Discovering OIDC endpoints...")
@@ -634,7 +634,7 @@ async def run_oauth_benchmark(
 )
 @click.option(
     "--url",
-    default="http://127.0.0.1:8001/mcp",
+    default="http://localhost:8001/mcp",
     show_default=True,
     help="MCP OAuth server URL",
 )

tests/load/oauth_pool.py

@@ -138,7 +138,7 @@ class OAuthUserPool:
         return profile
 
     async def create_user_session(
-        self, username: str, mcp_url: str = "http://127.0.0.1:8001/mcp"
+        self, username: str, mcp_url: str = "http://localhost:8001/mcp"
     ) -> ClientSession:
         """
         Create an MCP client session for a user.

tests/server/test_jwt_tokens.py

@@ -0,0 +1,208 @@
+"""
+Test JWT token structure and scope support.
+
+This test obtains a JWT token via OAuth and examines its structure.
+"""
+
+import base64
+import json
+
+import pytest
+
+
+def decode_jwt_without_verification(token: str) -> dict:
+    """
+    Decode JWT token without signature verification (for inspection only).
+
+    Returns:
+        Dict with header and payload
+    """
+    parts = token.split(".")
+    if len(parts) != 3:
+        raise ValueError(f"Invalid JWT format: expected 3 parts, got {len(parts)}")
+
+    # Decode header
+    header = json.loads(
+        base64.urlsafe_b64decode(parts[0] + "=" * (4 - len(parts[0]) % 4))
+    )
+
+    # Decode payload
+    payload = json.loads(
+        base64.urlsafe_b64decode(parts[1] + "=" * (4 - len(parts[1]) % 4))
+    )
+
+    return {
+        "header": header,
+        "payload": payload,
+    }
+
+
+@pytest.mark.integration
+async def test_jwt_token_structure_with_custom_client():
+    """
+    Test that we can create a JWT-enabled OAuth client and examine the token structure.
+
+    This test manually configures a JWT client and obtains a token.
+    """
+    import os
+
+    import httpx
+
+    # This test requires manual setup of a JWT client
+    # Skip if not configured
+    client_id = os.getenv("NEXTCLOUD_JWT_CLIENT_ID")
+    if not client_id:
+        pytest.skip("NEXTCLOUD_JWT_CLIENT_ID not set - skipping JWT token test")
+
+    _client_secret = os.getenv("NEXTCLOUD_JWT_CLIENT_SECRET")
+    nextcloud_host = os.getenv("NEXTCLOUD_HOST", "http://localhost:8080")
+
+    # Fetch discovery
+    async with httpx.AsyncClient() as client:
+        discovery_response = await client.get(
+            f"{nextcloud_host}/.well-known/openid-configuration"
+        )
+        discovery_response.raise_for_status()
+        discovery = discovery_response.json()
+
+    _token_endpoint = discovery["token_endpoint"]
+
+    # For this test, we'll use client credentials grant if supported
+    # Otherwise, skip this test
+    pytest.skip(
+        "JWT token test requires OAuth flow - use manual testing script instead"
+    )
+
+
+@pytest.mark.integration
+async def test_opaque_token_vs_jwt_comparison():
+    """
+    Compare opaque tokens vs JWT tokens to understand the differences.
+
+    This is a documentation test that explains the findings.
+    """
+    # This test documents our findings about JWT vs opaque tokens
+    # Based on manual testing with the test script
+
+    findings = {
+        "oidc_app_capabilities": {
+            "supports_jwt_tokens": True,
+            "supports_opaque_tokens": True,
+            "configuration_method": "per-client via token_type field",
+            "jwt_standard": "RFC 9068 (OAuth 2.0 Access Token JWT Profile)",
+        },
+        "dynamic_registration": {
+            "sets_allowed_scopes": False,
+            "note": "Dynamic registration does NOT populate allowed_scopes from the scope parameter in registration request",
+            "workaround": "Must use occ oidc:create with --allowed_scopes flag or manually update via web UI/API",
+        },
+        "jwt_token_structure": {
+            "header": {
+                "typ": "at+JWT",  # RFC 9068 access token type
+                "alg": "RS256",  # Signature algorithm
+            },
+            "payload_claims": {
+                "iss": "issuer URL",
+                "sub": "user ID",
+                "aud": "client ID",
+                "exp": "expiration timestamp",
+                "iat": "issued at timestamp",
+                "scope": "space-separated scope string (THIS IS THE KEY!)",
+                "client_id": "client identifier",
+                "jti": "JWT ID",
+                # Optional based on scopes:
+                "roles": "if roles scope present",
+                "groups": "if groups scope present",
+                "email": "if email scope present",
+                "name": "if profile scope present",
+            },
+            "scope_claim": {
+                "format": "space-separated string",
+                "example": "openid profile email nc:read nc:write",
+                "extraction": "payload['scope'].split()",
+            },
+        },
+        "scope_validation": {
+            "oidc_app": {
+                "validates": True,
+                "method": "Intersects requested scopes with allowed_scopes per client",
+                "location": "LoginRedirectorController.php:251-267",
+            },
+            "user_oidc_app": {
+                "validates_scopes": False,
+                "validates": ["token expiration", "issuer", "audience (optional)"],
+                "limitation": "Does NOT extract or validate scopes from JWT",
+            },
+        },
+        "token_size": {
+            "opaque": "72 characters",
+            "jwt": "~800-1200 characters (depends on claims)",
+            "overhead": "JWT is 10-15x larger than opaque tokens",
+        },
+        "recommendation": {
+            "for_mcp_server": "Use JWT tokens with self-validation",
+            "reasoning": [
+                "Can extract scopes directly from token payload",
+                "No additional API call needed",
+                "Standard approach (RFC 9068)",
+                "Works with existing oidc app",
+            ],
+            "alternative": "Implement introspection endpoint in oidc app (future work)",
+        },
+    }
+
+    # Print findings for documentation
+    print("\n" + "=" * 80)
+    print("JWT Token vs Opaque Token Findings")
+    print("=" * 80)
+    print(json.dumps(findings, indent=2))
+    print("=" * 80 + "\n")
+
+    # This test always passes - it's for documentation
+    assert True, "Findings documented"
+
+
+@pytest.mark.integration
+async def test_scope_presence_in_jwt():
+    """
+    Verify that custom scopes (nc:read, nc:write) are present in JWT tokens.
+
+    NOTE: This test documents the expected behavior based on manual testing.
+    Actual implementation will be tested in integration tests after JWT validation is implemented.
+    """
+    expected_behavior = {
+        "client_configuration": {
+            "allowed_scopes": "openid profile email nc:read nc:write",
+            "token_type": "jwt",
+        },
+        "authorization_request": {
+            "scope": "openid profile email nc:read nc:write",
+        },
+        "token_response": {
+            "access_token": "JWT with scope claim",
+        },
+        "jwt_payload": {
+            "scope": "openid profile email nc:read nc:write",  # All requested scopes present if in allowed_scopes
+        },
+        "scope_filtering": {
+            "description": "oidc app filters requested scopes against allowed_scopes",
+            "example": {
+                "requested": "openid profile nc:read nc:write nc:admin",
+                "allowed": "openid profile email nc:read nc:write",
+                "granted": "openid profile nc:read nc:write",  # nc:admin filtered out, email not requested
+            },
+        },
+    }
+
+    print("\n" + "=" * 80)
+    print("Expected JWT Scope Behavior")
+    print("=" * 80)
+    print(json.dumps(expected_behavior, indent=2))
+    print("=" * 80 + "\n")
+
+    assert True, "Expected behavior documented"
+
+
+if __name__ == "__main__":
+    # Run with: uv run pytest tests/server/test_jwt_tokens.py -v
+    pytest.main([__file__, "-v", "-s"])

tests/server/test_mcp_oauth_jwt.py

@@ -0,0 +1,246 @@
+"""Integration tests for JWT OAuth authentication.
+
+These tests verify:
+1. JWT token authentication works correctly
+2. JWT token verification via JWKS
+3. Scope information is properly extracted from JWT claims
+4. Dynamic tool filtering works with JWT tokens
+5. All MCP operations work with JWT authentication
+"""
+
+import json
+import logging
+
+import pytest
+
+logger = logging.getLogger(__name__)
+
+pytestmark = [pytest.mark.integration, pytest.mark.oauth]
+
+
+async def test_jwt_mcp_server_connection(nc_mcp_oauth_jwt_client):
+    """Test connection to JWT OAuth-enabled MCP server."""
+    result = await nc_mcp_oauth_jwt_client.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    logger.info(f"JWT OAuth MCP server has {len(result.tools)} tools available")
+
+
+async def test_jwt_token_authentication(nc_mcp_oauth_jwt_client):
+    """Test that JWT token authentication works."""
+    # Execute a simple read operation
+    result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+
+    assert result.isError is False, f"Tool execution failed: {result.content}"
+    assert result.content is not None
+    response_data = json.loads(result.content[0].text)
+
+    assert "results" in response_data
+    assert isinstance(response_data["results"], list)
+
+    logger.info(
+        f"Successfully authenticated with JWT token and executed tool, got {len(response_data['results'])} notes."
+    )
+
+
+async def test_jwt_tool_list_operations(nc_mcp_oauth_jwt_client):
+    """Test that list_tools works with JWT authentication."""
+    result = await nc_mcp_oauth_jwt_client.list_tools()
+
+    # Verify we have tools
+    assert len(result.tools) > 0
+
+    # Verify some expected tools exist
+    tool_names = [tool.name for tool in result.tools]
+    assert "nc_notes_get_note" in tool_names
+    assert "nc_notes_create_note" in tool_names
+    assert "nc_calendar_list_calendars" in tool_names
+    assert "nc_webdav_list_directory" in tool_names
+
+    logger.info(f"JWT server provides {len(result.tools)} tools")
+
+
+async def test_jwt_read_operation(nc_mcp_oauth_jwt_client):
+    """Test read operation with JWT authentication."""
+    # List calendars (read operation)
+    result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_calendar_list_calendars", arguments={}
+    )
+
+    assert result.isError is False, f"Tool execution failed: {result.content}"
+    assert result.content is not None
+    response_data = json.loads(result.content[0].text)
+
+    assert "calendars" in response_data
+    assert isinstance(response_data["calendars"], list)
+
+    logger.info(
+        f"Successfully executed read operation with JWT, got {len(response_data['calendars'])} calendars."
+    )
+
+
+async def test_jwt_write_operation(nc_mcp_oauth_jwt_client):
+    """Test write operation with JWT authentication."""
+    import uuid
+
+    # Create a note (write operation)
+    note_title = f"JWT Test Note {uuid.uuid4().hex[:8]}"
+    note_content = "This note was created during JWT authentication testing"
+
+    result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_create_note",
+        arguments={
+            "title": note_title,
+            "content": note_content,
+            "category": "Testing",
+        },
+    )
+
+    assert result.isError is False, f"Tool execution failed: {result.content}"
+    assert result.content is not None
+    response_data = json.loads(result.content[0].text)
+
+    # Verify note was created
+    assert "id" in response_data
+    assert response_data["title"] == note_title
+
+    note_id = response_data["id"]
+    logger.info(f"Successfully created note {note_id} with JWT authentication")
+
+    # Clean up: Delete the note
+    delete_result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_delete_note", arguments={"note_id": note_id}
+    )
+
+    assert delete_result.isError is False, f"Cleanup failed: {delete_result.content}"
+    logger.info(f"Cleaned up test note {note_id}")
+
+
+async def test_jwt_multiple_operations(nc_mcp_oauth_jwt_client):
+    """Test multiple operations with same JWT token to verify token persistence."""
+    # First operation: Search notes
+    result1 = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+    assert result1.isError is False
+
+    # Second operation: List calendars
+    result2 = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_calendar_list_calendars", arguments={}
+    )
+    assert result2.isError is False
+
+    # Third operation: List directory
+    result3 = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_webdav_list_directory", arguments={"path": "/"}
+    )
+    assert result3.isError is False
+
+    logger.info("Successfully executed multiple operations with JWT token")
+
+
+async def test_jwt_vs_opaque_token_compatibility(
+    nc_mcp_oauth_client, nc_mcp_oauth_jwt_client
+):
+    """Verify that both opaque and JWT tokens provide same functionality."""
+    # Execute same operation on both servers
+    opaque_result = await nc_mcp_oauth_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+    jwt_result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+
+    # Both should succeed
+    assert opaque_result.isError is False
+    assert jwt_result.isError is False
+
+    # Both should have results
+    opaque_data = json.loads(opaque_result.content[0].text)
+    jwt_data = json.loads(jwt_result.content[0].text)
+
+    assert "results" in opaque_data
+    assert "results" in jwt_data
+
+    # Results should be the same (same user, same notes)
+    assert len(opaque_data["results"]) == len(jwt_data["results"])
+
+    logger.info(
+        "Verified opaque and JWT tokens provide identical functionality: "
+        f"{len(opaque_data['results'])} notes accessible from both servers"
+    )
+
+
+async def test_jwt_error_handling(nc_mcp_oauth_jwt_client):
+    """Test error handling with JWT authentication."""
+    # Try to get a non-existent note
+    result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_get_note", arguments={"note_id": 999999}
+    )
+
+    # Should get an error (note doesn't exist)
+    assert result.isError is True
+    logger.info("JWT server correctly handles errors for invalid operations")
+
+
+async def test_jwt_scope_enforcement(nc_mcp_oauth_jwt_client):
+    """Test that JWT server properly enforces scopes."""
+    # This test assumes the JWT token has both nc:read and nc:write scopes
+    # Both read and write operations should succeed
+
+    # Read operation
+    read_result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+    assert read_result.isError is False
+
+    # Write operation
+    import uuid
+
+    note_title = f"Scope Test {uuid.uuid4().hex[:8]}"
+    write_result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_create_note",
+        arguments={
+            "title": note_title,
+            "content": "Testing scope enforcement",
+            "category": "Testing",
+        },
+    )
+    assert write_result.isError is False
+
+    # Clean up
+    note_id = json.loads(write_result.content[0].text)["id"]
+    await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_delete_note", arguments={"note_id": note_id}
+    )
+
+    logger.info("JWT server properly allows operations based on token scopes")
+
+
+async def test_jwt_automation_worked(nc_mcp_oauth_jwt_client):
+    """Test that verifies the automated JWT client creation worked correctly.
+
+    This test confirms that:
+    1. JWT client was auto-created during container initialization
+    2. MCP server loaded credentials from auto-generated file
+    3. JWT authentication flow works end-to-end
+    4. Server uses JWT tokens (not opaque tokens)
+    """
+    # If we can connect and execute tools, the automation worked
+    result = await nc_mcp_oauth_jwt_client.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    # Execute a tool to verify full OAuth flow
+    tool_result = await nc_mcp_oauth_jwt_client.call_tool(
+        "nc_notes_search_notes", arguments={"query": ""}
+    )
+    assert tool_result.isError is False
+
+    logger.info(
+        "✅ JWT client automation successful! "
+        "Auto-generated credentials working correctly."
+    )

tests/server/test_scope_authorization.py

@@ -0,0 +1,539 @@
+"""Integration tests for OAuth scope-based authorization and dynamic tool filtering.
+
+These tests verify:
+1. Dynamic tool filtering based on user's token scopes
+2. Scope enforcement (403 responses for insufficient scopes)
+3. Protected Resource Metadata (PRM) endpoint
+4. WWW-Authenticate challenge headers
+5. BasicAuth bypass (all tools visible)
+"""
+
+import pytest
+
+
+@pytest.mark.integration
+async def test_prm_endpoint():
+    """Test that the Protected Resource Metadata endpoint returns correct data."""
+    import httpx
+
+    # Test the PRM endpoint directly
+    async with httpx.AsyncClient() as client:
+        response = await client.get(
+            "http://localhost:8001/.well-known/oauth-protected-resource"
+        )
+        assert response.status_code == 200
+
+        prm_data = response.json()
+        assert prm_data["resource"] == "http://localhost:8001"
+        assert "nc:read" in prm_data["scopes_supported"]
+        assert "nc:write" in prm_data["scopes_supported"]
+        assert "http://localhost:8080" in prm_data["authorization_servers"]
+        assert "header" in prm_data["bearer_methods_supported"]
+        assert "RS256" in prm_data["resource_signing_alg_values_supported"]
+
+
+@pytest.mark.integration
+async def test_basicauth_shows_all_tools(nc_mcp_client):
+    """Test that BasicAuth mode shows all tools (no filtering)."""
+    # Note: Don't use 'async with' for session-scoped fixtures
+    # The fixture itself manages the session lifecycle
+
+    # List all tools
+    tools_response = await nc_mcp_client.list_tools()
+
+    # BasicAuth should see all tools
+    tool_names = [tool.name for tool in tools_response.tools]
+
+    # Should see both read and write tools
+    assert "nc_notes_get_note" in tool_names  # read tool
+    assert "nc_notes_create_note" in tool_names  # write tool
+    assert "nc_calendar_list_calendars" in tool_names  # read tool
+    assert "nc_calendar_create_event" in tool_names  # write tool
+
+    # Should have all 90+ tools
+    assert len(tool_names) >= 90
+
+
+@pytest.mark.integration
+async def test_read_only_token_filters_write_tools(nc_mcp_oauth_client_read_only):
+    """Test that a token with only nc:read scope filters out write tools."""
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    # Connect with token that has only "nc:read" scope
+    result = await nc_mcp_oauth_client_read_only.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"Read-only token sees {len(tool_names)} tools")
+
+    # Verify read tools are present
+    expected_read_tools = [
+        "nc_notes_get_note",
+        "nc_notes_search_notes",
+        "nc_calendar_list_calendars",
+        "nc_calendar_get_event",
+        "nc_webdav_list_directory",
+        "nc_webdav_read_file",
+    ]
+
+    for tool in expected_read_tools:
+        assert tool in tool_names, f"Expected read tool {tool} not found in tool list"
+
+    # Verify write tools are NOT present
+    write_tools_should_be_filtered = [
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_notes_delete_note",
+        "nc_calendar_create_event",
+        "nc_calendar_update_event",
+        "nc_calendar_delete_event",
+        "nc_webdav_write_file",
+        "nc_webdav_create_directory",
+    ]
+
+    for tool in write_tools_should_be_filtered:
+        assert tool not in tool_names, (
+            f"Write tool {tool} should be filtered out but was found in tool list"
+        )
+
+    logger.info(
+        f"✅ Read-only token properly filters tools: {len(tool_names)} read tools visible, "
+        f"write tools hidden"
+    )
+
+
+@pytest.mark.integration
+async def test_write_only_token_filters_read_tools(nc_mcp_oauth_client_write_only):
+    """Test that a token with only nc:write scope filters out read tools."""
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    # Connect with token that has only "nc:write" scope
+    result = await nc_mcp_oauth_client_write_only.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"Write-only token sees {len(tool_names)} tools")
+
+    # Verify write tools are present
+    expected_write_tools = [
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_notes_delete_note",
+        "nc_calendar_create_event",
+        "nc_calendar_update_event",
+        "nc_calendar_delete_event",
+        "nc_webdav_write_file",
+        "nc_webdav_create_directory",
+    ]
+
+    for tool in expected_write_tools:
+        assert tool in tool_names, f"Expected write tool {tool} not found in tool list"
+
+    # Verify read tools are NOT present (write-only scope)
+    read_tools_should_be_filtered = [
+        "nc_notes_get_note",
+        "nc_notes_search_notes",
+        "nc_calendar_list_calendars",
+        "nc_calendar_get_event",
+        "nc_webdav_list_directory",
+        "nc_webdav_read_file",
+    ]
+
+    for tool in read_tools_should_be_filtered:
+        assert tool not in tool_names, (
+            f"Read tool {tool} should be filtered out but was found in tool list"
+        )
+
+    logger.info(
+        f"✅ Write-only token properly filters tools: {len(tool_names)} write tools visible, "
+        f"read tools hidden"
+    )
+
+
+@pytest.mark.integration
+async def test_full_access_token_shows_all_tools(nc_mcp_oauth_client_full_access):
+    """Test that a token with both nc:read and nc:write scopes can see all tools."""
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    # Connect with token that has both "nc:read" and "nc:write" scopes
+    result = await nc_mcp_oauth_client_full_access.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"Full access token sees {len(tool_names)} tools")
+
+    # Verify both read and write tools are present
+    expected_read_tools = [
+        "nc_notes_get_note",
+        "nc_notes_search_notes",
+        "nc_calendar_list_calendars",
+        "nc_webdav_read_file",
+    ]
+
+    expected_write_tools = [
+        "nc_notes_create_note",
+        "nc_calendar_create_event",
+        "nc_webdav_write_file",
+    ]
+
+    for tool in expected_read_tools:
+        assert tool in tool_names, f"Expected read tool {tool} not found"
+
+    for tool in expected_write_tools:
+        assert tool in tool_names, f"Expected write tool {tool} not found"
+
+    # Should have all 90+ tools (both read and write)
+    assert len(tool_names) >= 90
+
+    logger.info(
+        f"✅ Full access token sees all tools: {len(tool_names)} total (read + write)"
+    )
+
+
+@pytest.mark.integration
+async def test_scope_helper_functions():
+    """Test the scope authorization helper functions."""
+    from nextcloud_mcp_server.auth import get_required_scopes, has_required_scopes
+
+    # Create a mock function with scope requirements
+    async def mock_read_tool():
+        pass
+
+    async def mock_write_tool():
+        pass
+
+    async def mock_no_scope_tool():
+        pass
+
+    # Add scope metadata
+    mock_read_tool._required_scopes = ["nc:read"]  # type: ignore
+    mock_write_tool._required_scopes = ["nc:write"]  # type: ignore
+
+    # Test get_required_scopes
+    assert get_required_scopes(mock_read_tool) == ["nc:read"]
+    assert get_required_scopes(mock_write_tool) == ["nc:write"]
+    assert get_required_scopes(mock_no_scope_tool) == []
+
+    # Test has_required_scopes
+    read_only_scopes = {"nc:read"}
+    full_scopes = {"nc:read", "nc:write"}
+    no_scopes = set()
+
+    # User with only read scope
+    assert has_required_scopes(mock_read_tool, read_only_scopes) is True
+    assert has_required_scopes(mock_write_tool, read_only_scopes) is False
+    assert has_required_scopes(mock_no_scope_tool, read_only_scopes) is True
+
+    # User with full scopes
+    assert has_required_scopes(mock_read_tool, full_scopes) is True
+    assert has_required_scopes(mock_write_tool, full_scopes) is True
+    assert has_required_scopes(mock_no_scope_tool, full_scopes) is True
+
+    # User with no scopes
+    assert has_required_scopes(mock_read_tool, no_scopes) is False
+    assert has_required_scopes(mock_write_tool, no_scopes) is False
+    assert has_required_scopes(mock_no_scope_tool, no_scopes) is True
+
+
+@pytest.mark.integration
+async def test_scope_decorator_stores_metadata():
+    """Test that @require_scopes decorator properly stores metadata."""
+    from nextcloud_mcp_server.auth import require_scopes
+
+    @require_scopes("nc:read", "nc:write")
+    async def test_function():
+        pass
+
+    # Check that metadata was stored
+    assert hasattr(test_function, "_required_scopes")
+    assert test_function._required_scopes == ["nc:read", "nc:write"]
+
+
+@pytest.mark.integration
+async def test_tools_have_scope_decorators(nc_mcp_client):
+    """Test that MCP tools have scope requirements defined."""
+    # Note: Don't use 'async with' for session-scoped fixtures
+    # The fixture itself manages the session lifecycle
+
+    # We can at least verify that some expected tools exist
+    tools_response = await nc_mcp_client.list_tools()
+    tool_names = [tool.name for tool in tools_response.tools]
+
+    # Verify expected read tools exist
+    expected_read_tools = [
+        "nc_notes_get_note",
+        "nc_notes_search_notes",
+        "nc_calendar_list_calendars",
+        "nc_calendar_get_event",
+        "nc_contacts_list_contacts",
+        "nc_webdav_list_directory",
+        "nc_webdav_read_file",
+    ]
+
+    for tool in expected_read_tools:
+        assert tool in tool_names, f"Expected read tool {tool} not found"
+
+    # Verify expected write tools exist
+    expected_write_tools = [
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_notes_delete_note",
+        "nc_calendar_create_event",
+        "nc_calendar_update_event",
+        "nc_calendar_delete_event",
+        "nc_contacts_create_contact",
+        "nc_webdav_write_file",
+        "nc_webdav_create_directory",
+    ]
+
+    for tool in expected_write_tools:
+        assert tool in tool_names, f"Expected write tool {tool} not found"
+
+
+@pytest.mark.integration
+async def test_scope_classification():
+    """Test that our scope classification correctly identifies read vs write operations."""
+    from scripts.add_scope_decorators_simple import classify_function
+
+    # Test read operations
+    assert classify_function("nc_notes_get_note") == "nc:read"
+    assert classify_function("nc_notes_search_notes") == "nc:read"
+    assert classify_function("nc_calendar_list_events") == "nc:read"
+    assert classify_function("nc_webdav_read_file") == "nc:read"
+    assert classify_function("nc_calendar_find_availability") == "nc:read"
+    assert classify_function("nc_calendar_get_upcoming_events") == "nc:read"
+
+    # Test write operations
+    assert classify_function("nc_notes_create_note") == "nc:write"
+    assert classify_function("nc_notes_update_note") == "nc:write"
+    assert classify_function("nc_notes_delete_note") == "nc:write"
+    assert classify_function("nc_notes_append_content") == "nc:write"
+    assert classify_function("nc_calendar_create_event") == "nc:write"
+    assert classify_function("nc_calendar_update_event") == "nc:write"
+    assert classify_function("nc_calendar_manage_calendar") == "nc:write"
+    assert classify_function("nc_webdav_write_file") == "nc:write"
+    assert classify_function("nc_webdav_move_resource") == "nc:write"
+    assert classify_function("nc_contacts_create_contact") == "nc:write"
+    assert classify_function("nc_cookbook_import_recipe") == "nc:write"
+    assert classify_function("nc_tables_insert_row") == "nc:write"
+    assert classify_function("deck_archive_card") == "nc:write"
+    assert classify_function("deck_assign_label_to_card") == "nc:write"
+
+
+@pytest.mark.integration
+async def test_all_tools_classified():
+    """Verify that all tools can be properly classified as read or write."""
+    from scripts.add_scope_decorators_simple import classify_function
+
+    # List of all tool names (extracted from our implementation)
+    all_tools = [
+        # Calendar tools
+        "nc_calendar_list_calendars",
+        "nc_calendar_create_event",
+        "nc_calendar_list_events",
+        "nc_calendar_get_event",
+        "nc_calendar_update_event",
+        "nc_calendar_delete_event",
+        "nc_calendar_create_meeting",
+        "nc_calendar_get_upcoming_events",
+        "nc_calendar_find_availability",
+        "nc_calendar_bulk_operations",
+        "nc_calendar_manage_calendar",
+        "nc_calendar_list_todos",
+        "nc_calendar_create_todo",
+        "nc_calendar_update_todo",
+        "nc_calendar_delete_todo",
+        "nc_calendar_search_todos",
+        # Notes tools
+        "nc_notes_get_note",
+        "nc_notes_search_notes",
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_notes_append_content",
+        "nc_notes_delete_note",
+        "nc_notes_get_attachment",
+        # Add more as needed...
+    ]
+
+    unclassified = []
+    for tool_name in all_tools:
+        scope = classify_function(tool_name)
+        if scope is None:
+            unclassified.append(tool_name)
+
+    # All tools should be classifiable
+    assert len(unclassified) == 0, f"Unclassified tools: {unclassified}"
+
+
+@pytest.mark.integration
+async def test_scope_metadata_coverage(nc_mcp_client):
+    """Test that all tools have scope metadata defined (no undecorated tools)."""
+    # This test would require access to the actual tool functions to check metadata
+    # For now, we verify that the expected number of tools exists
+    # Note: Don't use 'async with' for session-scoped fixtures
+
+    tools_response = await nc_mcp_client.list_tools()
+
+    # We applied decorators to 90 tools
+    # In BasicAuth mode, all should be visible
+    assert len(tools_response.tools) >= 90
+
+
+@pytest.mark.integration
+async def test_jwt_with_no_custom_scopes_returns_zero_tools(
+    nc_mcp_oauth_client_no_custom_scopes,
+):
+    """
+    Test that a JWT token with only OIDC default scopes (no nc:read or nc:write) returns 0 tools.
+
+    This tests the security behavior when a user declines to grant custom scopes during consent.
+    Expected: JWT token has scopes=['openid', 'profile', 'email'] but no nc:read or nc:write.
+    All tools require at least one custom scope, so they should all be filtered out.
+    """
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    # Connect with JWT token that has NO custom scopes (only openid, profile, email)
+    result = await nc_mcp_oauth_client_no_custom_scopes.list_tools()
+    assert result is not None
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(
+        f"JWT token with no custom scopes sees {len(tool_names)} tools (should be 0)"
+    )
+
+    # All tools require nc:read or nc:write, so should be filtered out
+    assert len(tool_names) == 0, (
+        f"Expected 0 tools but got {len(tool_names)}: {tool_names[:10]}"
+    )
+
+    logger.info(
+        "✅ JWT token without custom scopes correctly returns 0 tools (all filtered out)"
+    )
+
+
+@pytest.mark.integration
+async def test_jwt_consent_scenarios_read_only(nc_mcp_oauth_client_read_only):
+    """
+    Test JWT with only nc:read scope consented.
+
+    Simulates user granting only read permission during OAuth consent.
+    Expected: Should see read tools but not write tools.
+    """
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    result = await nc_mcp_oauth_client_read_only.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"JWT with nc:read consent sees {len(tool_names)} tools")
+
+    # Verify read tools are present
+    read_tools = ["nc_notes_get_note", "nc_notes_search_notes", "nc_webdav_read_file"]
+    for tool in read_tools:
+        assert tool in tool_names, f"Expected read tool {tool} not found"
+
+    # Verify write tools are filtered out
+    write_tools = [
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_webdav_write_file",
+    ]
+    for tool in write_tools:
+        assert tool not in tool_names, f"Write tool {tool} should be filtered out"
+
+    logger.info(
+        f"✅ JWT with nc:read consent: {len(tool_names)} read tools visible, write tools filtered"
+    )
+
+
+@pytest.mark.integration
+async def test_jwt_consent_scenarios_write_only(nc_mcp_oauth_client_write_only):
+    """
+    Test JWT with only nc:write scope consented.
+
+    Simulates user granting only write permission during OAuth consent.
+    Expected: Should see write tools but not read-only tools.
+    """
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    result = await nc_mcp_oauth_client_write_only.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"JWT with nc:write consent sees {len(tool_names)} tools")
+
+    # Verify write tools are present
+    write_tools = [
+        "nc_notes_create_note",
+        "nc_notes_update_note",
+        "nc_webdav_write_file",
+    ]
+    for tool in write_tools:
+        assert tool in tool_names, f"Expected write tool {tool} not found"
+
+    # Verify read-only tools are filtered out
+    read_only_tools = ["nc_notes_get_note", "nc_notes_search_notes"]
+    for tool in read_only_tools:
+        assert tool not in tool_names, f"Read-only tool {tool} should be filtered out"
+
+    logger.info(
+        f"✅ JWT with nc:write consent: {len(tool_names)} write tools visible, read-only tools filtered"
+    )
+
+
+@pytest.mark.integration
+async def test_jwt_consent_scenarios_full_access(nc_mcp_oauth_client_full_access):
+    """
+    Test JWT with both nc:read and nc:write scopes consented.
+
+    Simulates user granting both permissions during OAuth consent.
+    Expected: Should see all 90+ tools (both read and write).
+    """
+    import logging
+
+    logger = logging.getLogger(__name__)
+
+    result = await nc_mcp_oauth_client_full_access.list_tools()
+    assert result is not None
+    assert len(result.tools) > 0
+
+    tool_names = [tool.name for tool in result.tools]
+    logger.info(f"JWT with full consent sees {len(tool_names)} tools")
+
+    # Verify both read and write tools are present
+    read_tools = ["nc_notes_get_note", "nc_webdav_read_file"]
+    write_tools = ["nc_notes_create_note", "nc_webdav_write_file"]
+
+    for tool in read_tools:
+        assert tool in tool_names, f"Expected read tool {tool} not found"
+
+    for tool in write_tools:
+        assert tool in tool_names, f"Expected write tool {tool} not found"
+
+    # Should have all tools
+    assert len(tool_names) >= 90, f"Expected 90+ tools but got {len(tool_names)}"
+
+    logger.info(
+        f"✅ JWT with full consent: {len(tool_names)} tools visible (all read + write)"
+    )
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-v"])

tests/test_cli.py

@@ -0,0 +1,285 @@
+"""Tests for CLI options using Click's testing utilities."""
+
+import os
+
+import pytest
+from click.testing import CliRunner
+
+from nextcloud_mcp_server.app import run
+
+
+@pytest.fixture
+def runner():
+    """Create a Click CLI runner."""
+    return CliRunner()
+
+
+@pytest.fixture
+def clean_env(monkeypatch):
+    """Clean environment variables before each test."""
+    env_vars = [
+        "NEXTCLOUD_HOST",
+        "NEXTCLOUD_USERNAME",
+        "NEXTCLOUD_PASSWORD",
+        "NEXTCLOUD_OIDC_CLIENT_ID",
+        "NEXTCLOUD_OIDC_CLIENT_SECRET",
+        "NEXTCLOUD_OIDC_CLIENT_STORAGE",
+        "NEXTCLOUD_OIDC_SCOPES",
+        "NEXTCLOUD_OIDC_TOKEN_TYPE",
+        "NEXTCLOUD_MCP_SERVER_URL",
+        "NEXTCLOUD_PUBLIC_ISSUER_URL",
+    ]
+    for var in env_vars:
+        monkeypatch.delenv(var, raising=False)
+
+
+def test_help_message_displays_all_options(runner):
+    """Test that help message includes all new CLI options."""
+    result = runner.invoke(run, ["--help"])
+    assert result.exit_code == 0
+
+    # Check for new options
+    assert "--nextcloud-host" in result.output
+    assert "--nextcloud-username" in result.output
+    assert "--nextcloud-password" in result.output
+    assert "--oauth-scopes" in result.output
+    assert "--oauth-token-type" in result.output
+    assert "--public-issuer-url" in result.output
+
+    # Check for existing options
+    assert "--oauth-client-id" in result.output
+    assert "--oauth-client-secret" in result.output
+    assert "--mcp-server-url" in result.output
+
+
+def test_token_type_accepts_valid_values(runner, clean_env):
+    """Test that --oauth-token-type accepts bearer and jwt (case insensitive)."""
+    # Test lowercase bearer
+    result = runner.invoke(run, ["--oauth-token-type", "bearer", "--help"])
+    assert result.exit_code == 0
+
+    # Test lowercase jwt
+    result = runner.invoke(run, ["--oauth-token-type", "jwt", "--help"])
+    assert result.exit_code == 0
+
+    # Test uppercase (should work with case_sensitive=False)
+    result = runner.invoke(run, ["--oauth-token-type", "Bearer", "--help"])
+    assert result.exit_code == 0
+
+    result = runner.invoke(run, ["--oauth-token-type", "JWT", "--help"])
+    assert result.exit_code == 0
+
+
+def test_token_type_rejects_invalid_values(runner, clean_env):
+    """Test that --oauth-token-type rejects invalid values."""
+    result = runner.invoke(run, ["--oauth-token-type", "invalid"])
+    assert result.exit_code != 0
+    assert "Invalid value" in result.output
+
+
+def test_cli_options_set_environment_variables(runner, clean_env, monkeypatch):
+    """Test that CLI options set environment variables correctly."""
+    # We need to mock the actual server startup to avoid connection errors
+    # Store the env vars that get set
+    captured_env = {}
+
+    def mock_get_app(*args, **kwargs):
+        # Capture environment variables after they're set by CLI
+        captured_env.update(
+            {
+                "NEXTCLOUD_HOST": os.environ.get("NEXTCLOUD_HOST"),
+                "NEXTCLOUD_USERNAME": os.environ.get("NEXTCLOUD_USERNAME"),
+                "NEXTCLOUD_PASSWORD": os.environ.get("NEXTCLOUD_PASSWORD"),
+                "NEXTCLOUD_OIDC_SCOPES": os.environ.get("NEXTCLOUD_OIDC_SCOPES"),
+                "NEXTCLOUD_OIDC_TOKEN_TYPE": os.environ.get(
+                    "NEXTCLOUD_OIDC_TOKEN_TYPE"
+                ),
+                "NEXTCLOUD_PUBLIC_ISSUER_URL": os.environ.get(
+                    "NEXTCLOUD_PUBLIC_ISSUER_URL"
+                ),
+                "NEXTCLOUD_MCP_SERVER_URL": os.environ.get("NEXTCLOUD_MCP_SERVER_URL"),
+            }
+        )
+        # Raise an exception to stop execution before uvicorn.run
+        raise SystemExit(0)
+
+    # Patch get_app to capture env vars
+    monkeypatch.setattr("nextcloud_mcp_server.app.get_app", mock_get_app)
+
+    _ = runner.invoke(
+        run,
+        [
+            "--nextcloud-host",
+            "https://test.example.com",
+            "--nextcloud-username",
+            "testuser",
+            "--nextcloud-password",
+            "testpass",
+            "--oauth-scopes",
+            "openid nc:read",
+            "--oauth-token-type",
+            "jwt",
+            "--public-issuer-url",
+            "https://public.example.com",
+            "--mcp-server-url",
+            "http://test:8000",
+        ],
+    )
+
+    # Verify environment variables were set
+    assert captured_env["NEXTCLOUD_HOST"] == "https://test.example.com"
+    assert captured_env["NEXTCLOUD_USERNAME"] == "testuser"
+    assert captured_env["NEXTCLOUD_PASSWORD"] == "testpass"
+    assert captured_env["NEXTCLOUD_OIDC_SCOPES"] == "openid nc:read"
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] == "jwt"
+    assert captured_env["NEXTCLOUD_PUBLIC_ISSUER_URL"] == "https://public.example.com"
+    assert captured_env["NEXTCLOUD_MCP_SERVER_URL"] == "http://test:8000"
+
+
+def test_cli_options_override_environment_variables(runner, monkeypatch):
+    """Test that CLI options override environment variables."""
+    # Set environment variables
+    monkeypatch.setenv("NEXTCLOUD_HOST", "https://from-env.example.com")
+    monkeypatch.setenv("NEXTCLOUD_USERNAME", "envuser")
+    monkeypatch.setenv("NEXTCLOUD_OIDC_SCOPES", "openid")
+    monkeypatch.setenv("NEXTCLOUD_OIDC_TOKEN_TYPE", "bearer")
+
+    captured_env = {}
+
+    def mock_get_app(*args, **kwargs):
+        captured_env.update(
+            {
+                "NEXTCLOUD_HOST": os.environ.get("NEXTCLOUD_HOST"),
+                "NEXTCLOUD_USERNAME": os.environ.get("NEXTCLOUD_USERNAME"),
+                "NEXTCLOUD_OIDC_SCOPES": os.environ.get("NEXTCLOUD_OIDC_SCOPES"),
+                "NEXTCLOUD_OIDC_TOKEN_TYPE": os.environ.get(
+                    "NEXTCLOUD_OIDC_TOKEN_TYPE"
+                ),
+            }
+        )
+        raise SystemExit(0)
+
+    monkeypatch.setattr("nextcloud_mcp_server.app.get_app", mock_get_app)
+
+    # Provide CLI options that should override env vars
+    _ = runner.invoke(
+        run,
+        [
+            "--nextcloud-host",
+            "https://from-cli.example.com",
+            "--nextcloud-username",
+            "cliuser",
+            "--oauth-scopes",
+            "openid nc:write",
+            "--oauth-token-type",
+            "jwt",
+        ],
+    )
+
+    # Verify CLI options overrode env vars
+    assert captured_env["NEXTCLOUD_HOST"] == "https://from-cli.example.com"
+    assert captured_env["NEXTCLOUD_USERNAME"] == "cliuser"
+    assert captured_env["NEXTCLOUD_OIDC_SCOPES"] == "openid nc:write"
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] == "jwt"
+
+
+def test_environment_variables_used_when_cli_not_provided(runner, monkeypatch):
+    """Test that environment variables are used when CLI options not provided."""
+    # Set environment variables
+    monkeypatch.setenv("NEXTCLOUD_HOST", "https://from-env.example.com")
+    monkeypatch.setenv("NEXTCLOUD_USERNAME", "envuser")
+    monkeypatch.setenv("NEXTCLOUD_PASSWORD", "envpass")
+    monkeypatch.setenv("NEXTCLOUD_OIDC_SCOPES", "openid email")
+    monkeypatch.setenv("NEXTCLOUD_OIDC_TOKEN_TYPE", "jwt")
+    monkeypatch.setenv("NEXTCLOUD_PUBLIC_ISSUER_URL", "https://public-env.example.com")
+
+    captured_env = {}
+
+    def mock_get_app(*args, **kwargs):
+        captured_env.update(
+            {
+                "NEXTCLOUD_HOST": os.environ.get("NEXTCLOUD_HOST"),
+                "NEXTCLOUD_USERNAME": os.environ.get("NEXTCLOUD_USERNAME"),
+                "NEXTCLOUD_PASSWORD": os.environ.get("NEXTCLOUD_PASSWORD"),
+                "NEXTCLOUD_OIDC_SCOPES": os.environ.get("NEXTCLOUD_OIDC_SCOPES"),
+                "NEXTCLOUD_OIDC_TOKEN_TYPE": os.environ.get(
+                    "NEXTCLOUD_OIDC_TOKEN_TYPE"
+                ),
+                "NEXTCLOUD_PUBLIC_ISSUER_URL": os.environ.get(
+                    "NEXTCLOUD_PUBLIC_ISSUER_URL"
+                ),
+            }
+        )
+        raise SystemExit(0)
+
+    monkeypatch.setattr("nextcloud_mcp_server.app.get_app", mock_get_app)
+
+    # Don't provide any CLI options - should use env vars
+    _ = runner.invoke(run, [])
+
+    # Verify env vars were used
+    assert captured_env["NEXTCLOUD_HOST"] == "https://from-env.example.com"
+    assert captured_env["NEXTCLOUD_USERNAME"] == "envuser"
+    assert captured_env["NEXTCLOUD_PASSWORD"] == "envpass"
+    assert captured_env["NEXTCLOUD_OIDC_SCOPES"] == "openid email"
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] == "jwt"
+    assert (
+        captured_env["NEXTCLOUD_PUBLIC_ISSUER_URL"] == "https://public-env.example.com"
+    )
+
+
+def test_default_values(runner, clean_env, monkeypatch):
+    """Test that default values are used when neither CLI nor env vars provided."""
+    captured_env = {}
+
+    def mock_get_app(*args, **kwargs):
+        captured_env.update(
+            {
+                "NEXTCLOUD_OIDC_SCOPES": os.environ.get("NEXTCLOUD_OIDC_SCOPES"),
+                "NEXTCLOUD_OIDC_TOKEN_TYPE": os.environ.get(
+                    "NEXTCLOUD_OIDC_TOKEN_TYPE"
+                ),
+                "NEXTCLOUD_MCP_SERVER_URL": os.environ.get("NEXTCLOUD_MCP_SERVER_URL"),
+                "NEXTCLOUD_OIDC_CLIENT_STORAGE": os.environ.get(
+                    "NEXTCLOUD_OIDC_CLIENT_STORAGE"
+                ),
+            }
+        )
+        raise SystemExit(0)
+
+    monkeypatch.setattr("nextcloud_mcp_server.app.get_app", mock_get_app)
+
+    # Don't provide CLI options or env vars - should use defaults
+    _ = runner.invoke(run, [])
+
+    # Verify default values
+    assert (
+        captured_env["NEXTCLOUD_OIDC_SCOPES"] == "openid profile email nc:read nc:write"
+    )
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] == "bearer"
+    assert captured_env["NEXTCLOUD_MCP_SERVER_URL"] == "http://localhost:8000"
+    assert (
+        captured_env["NEXTCLOUD_OIDC_CLIENT_STORAGE"] == ".nextcloud_oauth_client.json"
+    )
+
+
+def test_oauth_token_type_case_normalization(runner, clean_env, monkeypatch):
+    """Test that token type is normalized correctly regardless of input case."""
+    captured_env = {}
+
+    def mock_get_app(*args, **kwargs):
+        captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] = os.environ.get(
+            "NEXTCLOUD_OIDC_TOKEN_TYPE"
+        )
+        raise SystemExit(0)
+
+    monkeypatch.setattr("nextcloud_mcp_server.app.get_app", mock_get_app)
+
+    # Test uppercase JWT
+    runner.invoke(run, ["--oauth-token-type", "JWT"])
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] in ["JWT", "jwt"]
+
+    # Test mixed case Bearer
+    captured_env.clear()
+    runner.invoke(run, ["--oauth-token-type", "Bearer"])
+    assert captured_env["NEXTCLOUD_OIDC_TOKEN_TYPE"] in ["Bearer", "bearer"]

uv.lock

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 ]
 
+[[package]]
+name = "cffi"
+version = "2.0.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pycparser", marker = "implementation_name != 'PyPy'" },
+]
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+]
+
 [[package]]
 name = "decli"
 version = "0.6.3"
@@ -799,7 +931,7 @@ wheels = [
 
 [[package]]
 name = "nextcloud-mcp-server"
-version = "0.17.0"
+version = "0.17.1"
 source = { editable = "." }
 dependencies = [
     { name = "caldav" },
@@ -809,6 +941,7 @@ dependencies = [
     { name = "mcp", extra = ["cli"] },
     { name = "pillow" },
     { name = "pydantic" },
+    { name = "pyjwt", extra = ["crypto"] },
     { name = "pythonvcard4" },
 ]
 
@@ -833,6 +966,7 @@ requires-dist = [
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     { name = "pillow", specifier = ">=12.0.0,<12.1.0" },
     { name = "pydantic", specifier = ">=2.11.4" },
+    { name = "pyjwt", extras = ["crypto"], specifier = ">=2.8.0" },
     { name = "pythonvcard4", specifier = ">=0.2.0" },
 ]
 
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 ]
 
+[[package]]
+name = "pycparser"
+version = "2.23"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/fe/cf/d2d3b9f5699fb1e4615c8e32ff220203e43b248e1dfcc6736ad9057731ca/pycparser-2.23.tar.gz", hash = "sha256:78816d4f24add8f10a06d6f05b4d424ad9e96cfebf68a4ddc99c65c0720d00c2", size = 173734, upload-time = "2025-09-09T13:23:47.91Z" }
+wheels = [
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+]
+
 [[package]]
 name = "pydantic"
 version = "2.12.3"
@@ -1166,6 +1309,20 @@ wheels = [
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 ]
 
+[[package]]
+name = "pyjwt"
+version = "2.10.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/e7/46/bd74733ff231675599650d3e47f361794b22ef3e3770998dda30d3b63726/pyjwt-2.10.1.tar.gz", hash = "sha256:3cc5772eb20009233caf06e9d8a0577824723b44e6648ee0a2aedb6cf9381953", size = 87785, upload-time = "2024-11-28T03:43:29.933Z" }
+wheels = [
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+]
+
+[package.optional-dependencies]
+crypto = [
+    { name = "cryptography" },
+]
+
 [[package]]
 name = "pytest"
 version = "8.4.2"