head to head · open source
fastapi_mcp vs aimock
fastapi_mcp has 12,026 GitHub stars, 967 forks, 169 open issues and last shipped 12 months ago. aimock has 1,003 stars, 82 forks, 1 open issues and last shipped yesterday. fastapi_mcp leads on adoption by 1,099% (12,026 vs 1,003 stars). fastapi_mcp is written in Python under MIT; aimock is written in TypeScript under MIT. fastapi_mcp has attracted 8% as many forks as stars, aimock 8%. aimock was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (llm, mcp), 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 | aimock | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.0K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2025-11-24 | 2026-11-04 |
| Forks | ⑂ 967 | ⑂ 82 |
| 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 aimock if
- You want the aimock feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and aimock fits your workflow better
About fastapi_mcp
Built by Tadata FastAPI MCP Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth! Features Authentication built in, using your existing FastAPI dependencies! FastAPI native: Not just another OpenAPI MCP converter Zero/Minimal configuration required just point it at your FastAPI app and it works Preserving schemas of your request models and response models Preserve documentation of all your endpoints, just as it is in Swagger Flexible deployment Mount your MCP server to the same app, or deploy separately ASGI transport Uses FastAPI's ASGI interface directly for efficient communication…
read the full fastapi_mcp overview →
About aimock
aimock Mock infrastructure for AI application testing — point your SDK at one local port and every provider, protocol, and service answers deterministically. Quick start · The suite · Record & replay · Docs One package, one port, zero dependencies. LLM APIs, image generation and editing, text to speech, transcription, audio translation and generation, video generation, embeddings, MCP tools, A2A agents, AG UI event streams, vector databases, search, rerank, and moderation — no keys, no network, no surprise bills. Quick Start The aimock Suite aimock mocks everything your AI app talks to: Run them all on one port…
read the full aimock overview →
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Frequently asked questions
Is fastapi_mcp or aimock more popular?
fastapi_mcp has 12,026 GitHub stars and aimock has 1,003. fastapi_mcp has the larger community by that measure.
Are fastapi_mcp and aimock free?
Both are open source. fastapi_mcp is licensed under MIT and aimock under MIT. Neither carries a licence fee.
What is the difference between fastapi_mcp and aimock?
fastapi_mcp is written in Python and aimock in TypeScript. 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 aimock?
Choose fastapi_mcp if you want the larger community (12,026 stars) or its MIT licence terms. Choose aimock if its feature set, stack or MIT licence fits better. Both are self-hostable.