head to head · open source
Yaak vs fastapi_mcp
Yaak has 19,224 GitHub stars, 813 forks, 19 open issues and last shipped yesterday. fastapi_mcp has 12,008 stars, 967 forks, 169 open issues and last shipped 10 months ago. Yaak leads on adoption by 60% (19,224 vs 12,008 stars). Yaak is written in TypeScript under MIT; fastapi_mcp is written in Python under MIT. Yaak has attracted 4% as many forks as stars, fastapi_mcp 8%. Yaak was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Yaak | fastapi_mcp | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 12K |
| License | MIT | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-09-17 | 2025-11-24 |
| Forks | ⑂ 813 | ⑂ 967 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Yaak if
- You weight community size — 19K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick fastapi_mcp if
- You want the fastapi_mcp feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and fastapi_mcp fits your workflow better
About Yaak
Yaak is a desktop API client for REST, GraphQL, gRPC, WebSocket, and Server Sent Events. It is built with Tauri, Rust, and React, and it lives in the developer tools ecosystem for API development and testing. The project presents itself as an offline first, privacy first alternative to Postman, Insomnia, and Bruno.
About fastapi_mcp
FastAPI MCP is an MIT licensed Python library from Tadata that exposes the endpoints of an existing FastAPI application as Model Context Protocol (MCP) tools, so MCP clients such as Claude and Cursor can call a team's own API, and it is built for Python backend developers who already run FastAPI services and want agent access without hand writing a separate MCP server.
read the full fastapi_mcp overview →
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Frequently asked questions
Is Yaak or fastapi_mcp more popular?
Yaak has 19,224 GitHub stars and fastapi_mcp has 12,008. Yaak has the larger community by that measure.
Are Yaak and fastapi_mcp free?
Both are open source. Yaak is licensed under MIT and fastapi_mcp under MIT. Neither carries a licence fee.
What is the difference between Yaak and fastapi_mcp?
Yaak is written in TypeScript and fastapi_mcp in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Yaak or fastapi_mcp?
Choose Yaak if you want the larger community (19,224 stars) or its MIT licence terms. Choose fastapi_mcp if its feature set, stack or MIT licence fits better. Both are self-hostable.