Tools/PrefectHQ/fastmcp

fastmcp

The fast, Pythonic way to build MCP servers and clients

26.2k ★+177/wkgrowthPythontrending

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The Lens

FastMCP is the easiest way to build MCP servers in Python. Decorate a function, and it becomes a tool your AI assistant can call. Schema generation, validation, auth, transport: all handled.

Setup is one pip install and a few lines of code. If you've written a Flask route, you can write an MCP server. Prefect maintains this actively and it's now the foundation of the official MCP Python SDK.

Free, Apache 2.0. No underlying service costs unless you opt into Prefect's hosted platform. The standard choice for Python MCP development.

Free vs Self-Hosted vs Paid

fully free

Free Tier

The MCP server itself is completely free and open source. Install it, configure your MCP client, and use it without any cost.

Self-Hosted

Runs locally or on your own infrastructure. No external dependencies beyond the service it connects to.

Paid

No paid tier. The MCP server is free. The underlying service may have its own pricing.

Free and open source. The underlying service may have its own costs.

Self-hosting ops:trivial

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Score

82/100 · A

Adoption27/30

Maintenance25/25

Community15/20

License5/15

Analysis10/10

A low score is not a verdict on quality. Young and niche tools start low by design. How we calculate scores

Trust Signals

High adoption: 24,614 starsActive community: 1,931 forksCommunity discussions enabledOrganization account (39 public repos)Author also built: PrefectHQ/prefab (206 stars)

About

Owner: PrefectHQ (Organization)
Stars: 26,225
Forks: 2,133

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Explore Further

GitHub Repository

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Dev.to Articles

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Official Website

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