head to head · open source
fastapi_mcp vs kiro-gateway
fastapi_mcp has 12,007 GitHub stars, 969 forks, 169 open issues and last shipped 10 months ago. kiro-gateway has 2,281 stars, 551 forks, 103 open issues and last shipped 4 months ago. fastapi_mcp leads on adoption by 426% (12,007 vs 2,281 stars). fastapi_mcp is written in Python under MIT; kiro-gateway is written in Python under AGPL-3.0. fastapi_mcp has attracted 8% as many forks as stars, kiro-gateway 24%. kiro-gateway was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (ai, claude, fastapi, llm), so they are genuine substitutes rather than adjacent tools.
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
| fastapi_mcp | kiro-gateway | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 2.3K |
| License | MIT | AGPL-3.0 |
| Written in | Python | Python |
| Last push | 2025-11-24 | 2026-05-18 |
| Forks | ⑂ 969 | ⑂ 551 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi_mcp if
- You weight community size — 12K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick kiro-gateway if
- You want the kiro-gateway feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and kiro-gateway fits your workflow better
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 →
About kiro-gateway
Kiro Gateway is an open source proxy API gateway that turns the Claude and other models available inside Kiro IDE and Kiro CLI (Amazon Q Developer / AWS CodeWhisperer) into OpenAI and Anthropic compatible API endpoints, for developers who want to reach those models from any client.
read the full kiro-gateway overview →
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Frequently asked questions
Is fastapi_mcp or kiro-gateway more popular?
fastapi_mcp has 12,007 GitHub stars and kiro-gateway has 2,281. fastapi_mcp has the larger community by that measure.
Are fastapi_mcp and kiro-gateway free?
Both are open source. fastapi_mcp is licensed under MIT and kiro-gateway under AGPL-3.0. Neither carries a licence fee.
What is the difference between fastapi_mcp and kiro-gateway?
fastapi_mcp is written in Python and kiro-gateway 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, fastapi_mcp or kiro-gateway?
Choose fastapi_mcp if you want the larger community (12,007 stars) or its MIT licence terms. Choose kiro-gateway if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.