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Secure your FastMCP server with authentication.

Authentication

The fast, Pythonic way to build MCP servers and clients.

FastMCP

Welcome!

Welcome to FastMCP 2.0!

Installation

Quickstart

Learn about the core FastMCP server class and how to run it.

FastMCP Servers

The FastMCP Server

Expose functions as executable capabilities for your MCP client.

Tools

Expose data sources and dynamic content generators to your MCP client.

Resources

Resources & Templates

Create reusable, parameterized prompt templates for MCP clients.

Prompts

Access MCP capabilities like logging, progress, and resources within your MCP objects.

Context

MCP Context

Use FastMCP to act as an intermediary or change transport for other MCP servers.

Proxy Servers

Combine multiple FastMCP servers into a single, larger application using mounting and importing.

Composition

Server Composition

Learn how to run and deploy your FastMCP server using various transport protocols like STDIO, Streamable HTTP, and SSE.

Running the Server

Running Your FastMCP Server

Integrate FastMCP servers into existing Starlette, FastAPI, or other ASGI applications

ASGI Integration

Integrating FastMCP in ASGI Applications

Learn how to use the FastMCP command-line interface

FastMCP CLI

Learn how to use the FastMCP Client to interact with MCP servers.

Overview

Client Overview

Understand the different ways FastMCP Clients can connect to servers.

Transports

Client Transports

Properly use instance methods, class methods, and static methods with FastMCP decorators.

Get Started

Servers

Deployment

Clients

Patterns

Authentication