rutis
★ 149
vs
fastapi_mcp
★ 12.0k
rutis vs fastapi_mcp
rutis: rutis is a plugin runtime with a small Rust core for software that writes, swaps and hot-reloads its own plugins, including agents. It guarantees dependency-ordered start, exactly-once cleanup and rollback on failure, with plugins in TypeScript, Python and Go running across processes and machines.; fastapi_mcp: FastAPI-MCP allows you to expose your existing FastAPI endpoints as Model Context Protocol (MCP) tools. It offers native integration with FastAPI, including built-in authentication using existing dependencies, and preserves schemas and documentation.
01
TL;DR
rutisDev Tooling · ★ 149
Letting an agent write, test and replace its own tools without restarting the program
fastapi_mcpDev Tooling · ★ 12.0k
When to choose:
- You already have a FastAPI application and want to expose its endpoints as MCP tools while reusing your existing FastAPI authentication dependencies and Swagger schemas.
- You want to mount the MCP server directly onto your ASGI app or deploy it separately under an MIT license.
When to skip:
- You are building a standalone MCP server from scratch rather than wrapping a FastAPI app; use FastMCP or the official MCP Python SDK.
- You need an actively updated repository (last push was November 2025).
02
Side-by-Side Comparison
Field
rutisfastapi_mcpCategory
Dev Tooling
Dev Tooling
Stars
★ 149
★ 12.0k
License
MIT
MIT
Install Command
npx @arcships/rutis-host new weather --lang node
cd weather && npm install
npx rutis-host dev
uv add fastapi-mcp
Updated
1d ago
11mo ago
Open Source
Yes
Yes
Tags
Plugin Runtime, Hot Reload, Rust
FastAPI, MCP, Python
03
Features
rutis01Lifecycle guarantees: gated start, LIFO cleanup that runs exactly once, and rollback when a load fails
02`rutis-host dev` reloads a plugin when its files change, and configuration updates live
03`rutis-host check` lists each plugin's dependencies and what it provides, and fails on a service nothing provides
04Plugins in TypeScript, Python, Go or Rust call each other's services by name, in-process or across machines
05Replacing a provider, even with one in another language, makes the plugins that use it follow
fastapi_mcp01Authentication built in, using your existing FastAPI dependencies!
02FastAPI-native: Not just another OpenAPI -> MCP converter
03Zero/Minimal configuration required
04Preserving schemas of your request models and response models
05Flexible deployment - Mount your MCP server to the same app, or deploy separately
04
Use Cases
rutis↳Letting an agent write, test and replace its own tools without restarting the program
↳Building long-running services whose integrations can be hot-swapped safely
↳Mixing Rust, Node, Python and Go components in one application with clear dependencies
↳Prototyping a coding agent where the model, tools and interface are all plugins
fastapi_mcp↳Integrating FastAPI services as tools for large language models (LLMs) that support MCP.
↳Enabling LLMs to interact with and utilize existing business logic and data exposed via FastAPI.
↳Quickly exposing authenticated FastAPI APIs as discoverable and usable tools within an MCP ecosystem.
05
Best For
rutis—
fastapi_mcpMost PopularEssential
FAQ
FAQ
What is the difference between rutis and fastapi_mcp?
Both rutis and fastapi_mcp are in the Dev Tooling category. rutis has 149 stars, while fastapi_mcp has 12.0k stars.
Which is better, rutis or fastapi_mcp?
The best choice depends on your use case. Choose rutis if Letting an agent write, test and replace its own tools without restarting the program, and fastapi_mcp if Integrating FastAPI services as tools for large language models (LLMs) that support MCP..
Is rutis free or open source?
Yes, rutis is open source on GitHub (MIT).
Is fastapi_mcp free or open source?
Yes, fastapi_mcp is open source on GitHub (MIT).
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