070 Purpose 0bb1b665

FastMCP Documentation Index (llms.txt)

Purpose: Authoritative URL index for FastMCP v2 documentation. Use web_fetch on these URLs to retrieve complete documentation.

Usage:

1. Search this file for topic keywords
2. Use web_fetch on the matched URL (append .md if needed)
3. Apply patterns from fetched documentation

Example:

• Need authentication → Search "authentication" → web_fetch https://gofastmcp.com/servers/auth/authentication.md

FastMCP

Docs

• Changelog
• Bearer Token Authentication: Authenticate your FastMCP client with a Bearer token.
• OAuth Authentication: Authenticate your FastMCP client via OAuth 2.1.
• The FastMCP Client: Programmatic client for interacting with MCP servers through a well-typed, Pythonic interface.
• User Elicitation: Handle server-initiated user input requests with structured schemas.
• Server Logging: Receive and handle log messages from MCP servers.
• Message Handling: Handle MCP messages, requests, and notifications with custom message handlers.
• Progress Monitoring: Handle progress notifications from long-running server operations.
• Prompts: Use server-side prompt templates with automatic argument serialization.
• Resource Operations: Access static and templated resources from MCP servers.
• Client Roots: Provide local context and resource boundaries to MCP servers.
• LLM Sampling: Handle server-initiated LLM sampling requests.
• Background Tasks: Execute operations asynchronously and track their progress
• Tool Operations: Discover and execute server-side tools with the FastMCP client.
• Client Transports: Configure how FastMCP Clients connect to and communicate with servers.
• FastMCP Cloud: The fastest way to deploy your MCP server
• HTTP Deployment: Deploy your FastMCP server over HTTP for remote access
• Running Your Server: Learn how to run your FastMCP server locally for development and testing
• Project Configuration: Use fastmcp.json for portable, declarative project configuration
• Contributing: Development workflow for FastMCP contributors
• Releases: FastMCP versioning and release process
• Tests: Testing patterns and requirements for FastMCP
• Upgrade Guide: Migration instructions for upgrading between FastMCP versions
• Installation
• Quickstart
• Welcome to FastMCP 2.0!: The fast, Pythonic way to build MCP servers and clients.
• Anthropic API 🤝 FastMCP: Connect FastMCP servers to the Anthropic API
• Auth0 OAuth 🤝 FastMCP: Secure your FastMCP server with Auth0 OAuth
• AuthKit 🤝 FastMCP: Secure your FastMCP server with AuthKit by WorkOS
• AWS Cognito OAuth 🤝 FastMCP: Secure your FastMCP server with AWS Cognito user pools
• Azure (Microsoft Entra ID) OAuth 🤝 FastMCP: Secure your FastMCP server with Azure/Microsoft Entra OAuth
• ChatGPT 🤝 FastMCP: Connect FastMCP servers to ChatGPT in Chat and Deep Research modes
• Claude Code 🤝 FastMCP: Install and use FastMCP servers in Claude Code
• Claude Desktop 🤝 FastMCP: Connect FastMCP servers to Claude Desktop
• Cursor 🤝 FastMCP: Install and use FastMCP servers in Cursor
• Descope 🤝 FastMCP: Secure your FastMCP server with Descope
• Discord OAuth 🤝 FastMCP: Secure your FastMCP server with Discord OAuth
• Eunomia Authorization 🤝 FastMCP: Add policy-based authorization to your FastMCP servers with Eunomia
• FastAPI 🤝 FastMCP: Integrate FastMCP with FastAPI applications
• Gemini SDK 🤝 FastMCP: Connect FastMCP servers to the Google Gemini SDK
• Gemini CLI 🤝 FastMCP: Install and use FastMCP servers in Gemini CLI
• GitHub OAuth 🤝 FastMCP: Secure your FastMCP server with GitHub OAuth
• Google OAuth 🤝 FastMCP: Secure your FastMCP server with Google OAuth
• MCP JSON Configuration 🤝 FastMCP: Generate standard MCP configuration files for any compatible client
• OCI IAM OAuth 🤝 FastMCP: Secure your FastMCP server with OCI IAM OAuth
• OpenAI API 🤝 FastMCP: Connect FastMCP servers to the OpenAI API
• OpenAPI 🤝 FastMCP: Generate MCP servers from any OpenAPI specification
• Permit.io Authorization 🤝 FastMCP: Add fine-grained authorization to your FastMCP servers with Permit.io
• Scalekit 🤝 FastMCP: Secure your FastMCP server with Scalekit
• Supabase 🤝 FastMCP: Secure your FastMCP server with Supabase Auth
• WorkOS 🤝 FastMCP: Authenticate FastMCP servers with WorkOS Connect
• FastMCP CLI: Learn how to use the FastMCP command-line interface
• Contrib Modules: Community-contributed modules extending FastMCP
• Decorating Methods: Properly use instance methods, class methods, and static methods with FastMCP decorators.
• Testing your FastMCP Server: How to test your FastMCP server.
• Tool Transformation: Create enhanced tool variants with modified schemas, argument mappings, and custom behavior.
• init
• cli
• init
• claude_code
• claude_desktop
• cursor
• gemini_cli
• mcp_json
• shared
• run
• tasks
• init
• init
• bearer
• oauth
• client
• elicitation
• logging
• messages
• oauth_callback
• progress
• roots
• sampling
• tasks
• transports
• dependencies
• exceptions
• mcp_config
• init
• prompt
• prompt_manager
• init
• resource
• resource_manager
• template
• types
• init
• init
• auth
• jwt_issuer
• middleware
• oauth_proxy
• oidc_proxy
• init
• auth0
• aws
• azure
• debug
• descope
• discord
• github
• google
• in_memory
• introspection
• jwt
• oci
• scalekit
• supabase
• workos
• redirect_validation
• context
• dependencies
• elicitation
• event_store
• http
• low_level
• init
• caching
• error_handling
• logging
• middleware
• rate_limiting
• timing
• tool_injection
• init
• components
• routing
• server
• proxy
• server
• init
• capabilities
• config
• converters
• handlers
• protocol
• subscriptions
• settings
• init
• tool
• tool_manager
• tool_transform
• init
• auth
• cli
• components
• exceptions
• http
• inspect
• json_schema
• json_schema_type
• logging
• mcp_config
• init
• init
• init
• base
• uv
• mcp_server_config
• init
• base
• filesystem
• init
• director
• formatters
• json_schema_converter
• models
• parser
• schemas
• tests
• types
• ui
• Authentication: Secure your FastMCP server with flexible authentication patterns, from simple API keys to full OAuth 2.1 integration with external identity providers.
• Full OAuth Server: Build a self-contained authentication system where your FastMCP server manages users, issues tokens, and validates them.
• OAuth Proxy: Bridge traditional OAuth providers to work seamlessly with MCP's authentication flow.
• OIDC Proxy: Bridge OIDC providers to work seamlessly with MCP's authentication flow.
• Remote OAuth: Integrate your FastMCP server with external identity providers like Descope, WorkOS, Auth0, and corporate SSO systems.
• Token Verification: Protect your server by validating bearer tokens issued by external systems.
• Server Composition: Combine multiple FastMCP servers into a single, larger application using mounting and importing.
• MCP Context: Access MCP capabilities like logging, progress, and resources within your MCP objects.
• User Elicitation: Request structured input from users during tool execution through the MCP context.
• Icons: Add visual icons to your servers, tools, resources, and prompts
• Client Logging: Send log messages back to MCP clients through the context.
• MCP Middleware: Add cross-cutting functionality to your MCP server with middleware that can inspect, modify, and respond to all MCP requests and responses.
• Progress Reporting: Update clients on the progress of long-running operations through the MCP context.
• Prompts: Create reusable, parameterized prompt templates for MCP clients.
• Proxy Servers: Use FastMCP to act as an intermediary or change transport for other MCP servers.
• Resources & Templates: Expose data sources and dynamic content generators to your MCP client.
• LLM Sampling: Request LLM text generation from the client or a configured provider through the MCP context.
• The FastMCP Server: The core FastMCP server class for building MCP applications with tools, resources, and prompts.
• Storage Backends: Configure persistent and distributed storage for caching and OAuth state management
• Background Tasks: Run long-running operations asynchronously with progress tracking
• Tools: Expose functions as executable capabilities for your MCP client.
• FastMCP Updates