---
slug: "fastmcp"
name: "FastMCP"
effect: "Builds MCP servers, clients and interactive apps in Python from plain decorated functions"
category: "devtool"
url: "https://gofastmcp.com"
github: "PrefectHQ/fastmcp"
pricing: "open-source"
license: "Apache-2.0"
tags: ["python", "mcp", "framework", "server", "client"]
platforms: []
install_kind: "pip"
date_added: "2026-10-14"
drop_score: 62
stars: 28076
pushed_at: "2026-10-14T21:11:40Z"
signals_status: "ok"
signals_fetched_at: "2026-10-15T01:18:57.641Z"
page: "https://agenttooldrop.com/tools/fastmcp"
---

# FastMCP

Builds MCP servers, clients and interactive apps in Python from plain decorated functions

Category: Devtools. Pricing: Open source. License: Apache-2.0.

## Why you would want it

You declare a tool as a Python function and FastMCP generates the schema, validation and documentation; when you connect to a server by URL, it handles transport negotiation, authentication and the protocol lifecycle. Besides servers and clients it supports apps, which give tools interactive UIs rendered in the conversation. FastMCP 1.0 was incorporated into the official MCP Python SDK in 2024, and Prefect maintains a TypeScript counterpart.

## Best for

- Python developers writing MCP servers
- Calling MCP servers from Python code
- Tools that need an interactive UI in chat

## Use it when

You are writing an MCP server or client in Python and want schemas, transports and auth handled for you.

## Skip it if

Your server is not written in Python; the TypeScript version lives in a separate repo, PrefectHQ/fastmcp-ts.

## Editor note

Moved from jlowin/fastmcp to PrefectHQ/fastmcp.

## Install

Install with pip:

```sh
pip install fastmcp
```

Source: https://gofastmcp.com/getting-started/installation

## Live signals

Fetched 2026-10-15T01:18:57.641Z (status: ok).

- Repository: PrefectHQ/fastmcp
- Stars: 28,076
- Forks: 2,473
- Open issues and PRs: 504
- License (GitHub): Apache-2.0
- Last push: 2026-10-14
- Latest release: v4.1.0 (2026-10-08)

## Links

- Website: https://gofastmcp.com
- GitHub: https://github.com/PrefectHQ/fastmcp
- Install instructions verified at: https://gofastmcp.com/getting-started/installation
- Source for this entry: https://github.com/PrefectHQ/fastmcp
- AgentToolDrop page: https://agenttooldrop.com/tools/fastmcp
- Full catalog (JSON): https://agenttooldrop.com/tools.json