FastMCP

What it does

A full MCP application framework — servers, clients and interactive apps — where exposing capability is a decorator over a normal function, and the framework absorbs the protocol, auth and deployment work that makes hand-rolled MCP servers tedious. The natural use is giving a model access to systems it otherwise has no idea about: your database, your internal service. Remember the model decides when to call these, so start read-only or gate anything destructive behind confirmation. Apache-2.0.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultyEasy to start
• Command lineRequired
• API keyNot required
• Sends data onlineNo

Judged automatically from the project's own metadata. Always confirm on the official page.

FastMCP FAQ

Is FastMCP free?

Yes. It runs on your own machine, so there is no usage-based cost either.

Do I need to install anything or write code to use FastMCP?

This is a library meant to be used from code. It is not a standalone app.

Does FastMCP work on a phone?

No. It needs a computer.

Can I use FastMCP commercially?

The licence is Apache-2.0, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

Other mcp connectors tools