head to head · open source
fastapi_mcp vs Tailcall
fastapi_mcp has 12,026 GitHub stars, 966 forks, 169 open issues and last shipped 12 months ago. Tailcall has 7,632 stars, 1,455 forks, 45 open issues and last shipped 2 days ago. fastapi_mcp leads on adoption by 58% (12,026 vs 7,632 stars). fastapi_mcp is written in Python under MIT; Tailcall is written in Rust under Apache-2.0. fastapi_mcp has attracted 8% as many forks as stars, Tailcall 19%. Tailcall was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | Tailcall | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 7.6K |
| License | MIT | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2025-11-24 | 2026-11-03 |
| Forks | ⑂ 966 | ⑂ 1.5K |
| 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 Tailcall if
- You want the Tailcall feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and Tailcall 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 Tailcall
⚒️ Forge: AI Enhanced Terminal Development Environment A comprehensive coding agent that integrates AI capabilities with your development environment curl fsSL sh Table of Contents Quickstart Usage Examples Why Forge? How Forge Works: Three Modes Interactive Mode (TUI) One Shot CLI Mode ZSH Plugin Mode ( : prefix) ZSH Plugin: The : Prefix System Agents Sending Prompts Attaching Files Conversation Management Git Integration Shell Command Tools Session & Configuration Skills Customizing Agent Behavior Semantic Search (Workspace) Quick Reference: All : Commands Command Line Options Advanced Configuration Provider…
read the full Tailcall overview →
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Frequently asked questions
Is fastapi_mcp or Tailcall more popular?
fastapi_mcp has 12,026 GitHub stars and Tailcall has 7,632. fastapi_mcp has the larger community by that measure.
Are fastapi_mcp and Tailcall free?
Both are open source. fastapi_mcp is licensed under MIT and Tailcall under Apache-2.0. Neither carries a licence fee.
What is the difference between fastapi_mcp and Tailcall?
fastapi_mcp is written in Python and Tailcall in Rust. 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 Tailcall?
Choose fastapi_mcp if you want the larger community (12,026 stars) or its MIT licence terms. Choose Tailcall if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.