buoy
★ 691
vs
fastapi_mcp
★ 12.0k
buoy vs fastapi_mcp
buoy: Buoy is an in-app developer toolkit that provides a floating menu to inspect and modify the state of a running application. It allows developers to check web calls, storage, query caches, routes, renders, and performance, facilitating on-the-fly debugging and environment manipulation.; 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
buoyDev Tooling · ★ 691
Quickly switch environments or sign in as a different customer directly within the running app.
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
buoyfastapi_mcpCategory
Dev Tooling
Dev Tooling
Stars
★ 691
★ 12.0k
License
NOASSERTION
MIT
Install Command
npm install @buoy-gg/core @buoy-gg/network && npx --package=@buoy-gg/core buoy login
uv add fastapi-mcp
Updated
1d ago
11mo ago
Open Source
Yes
Yes
Tags
In-app DevTools, Debugging, Performance Monitoring
FastAPI, MCP, Python
03
Features
buoy01Floating in-app menu for inspecting and modifying application state.
02Monitor and override network requests, storage, and query caches.
03Edit cached data, force loading/error states, and rewind application state (Time Machine).
04Integration with Buoy Desktop for multi-device debugging and an AI agent (Ask Buoy) inside the app.
05Specialized tools for various frameworks/libraries like React Query, Redux, Zustand, Jotai.
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
buoy↳Quickly switch environments or sign in as a different customer directly within the running app.
↳Force specific error states or rewind the application to a previous state for debugging.
↳Inspect and modify UI components, routes, and performance metrics during development.
↳Debug React Native, Expo, Flutter, Capacitor, or Three.js applications effectively on device.
↳Utilize an AI agent (Ask Buoy) for in-app assistance and modifications.
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
buoyTrending
fastapi_mcpMost PopularEssential
FAQ
FAQ
What is the difference between buoy and fastapi_mcp?
Both buoy and fastapi_mcp are in the Dev Tooling category. buoy has 691 stars, while fastapi_mcp has 12.0k stars.
Which is better, buoy or fastapi_mcp?
The best choice depends on your use case. Choose buoy if Quickly switch environments or sign in as a different customer directly within the running app., and fastapi_mcp if Integrating FastAPI services as tools for large language models (LLMs) that support MCP..
Is buoy free or open source?
Yes, buoy is open source on GitHub (NOASSERTION).
Is fastapi_mcp free or open source?
Yes, fastapi_mcp is open source on GitHub (MIT).
Cloud Infrastructure
AdDeploy on DigitalOcean
Host your MCP servers, Docker containers, and AI agents with $200 free credit over 60 days.
→