agent-bridge
★ 404
vs
fastapi_mcp
★ 12.0k
agent-bridge vs fastapi_mcp
agent-bridge: AgentBridge uses a two-process architecture with a foreground MCP client (bridge.ts) and a persistent background daemon (daemon.ts). It enables bidirectional communication between Claude Code and Codex via a control WebSocket and proxy, with automatic reconnection and message loop prevention.; 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
agent-bridgeDev Tooling · ★ 404
Connect Claude Code and Codex in a single workflow for collaborative development
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
agent-bridgefastapi_mcpCategory
Dev Tooling
Dev Tooling
Stars
★ 404
★ 12.0k
License
MIT
MIT
Install Command
npm install -g @raysonmeng/agentbridge && abg init
uv add fastapi-mcp
Updated
1d ago
11mo ago
Open Source
Yes
Yes
Tags
agent-collaboration, claude-code, cli
FastAPI, MCP, Python
03
Features
agent-bridge01Two-process architecture: foreground MCP client and background daemon
02Automatic reconnection with exponential backoff
03Message loop prevention via source field tagging
04Installable via plugin marketplace or local development setup
05CLI tool for lifecycle management (init, claude, codex, kill)
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
agent-bridge↳Connect Claude Code and Codex in a single workflow for collaborative development
↳Facilitate human-in-the-loop collaboration between multiple AI agents
↳Serve as a local developer tool for testing multi-agent interactions
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
agent-bridge—
fastapi_mcpMost PopularEssential
FAQ
FAQ
What is the difference between agent-bridge and fastapi_mcp?
Both agent-bridge and fastapi_mcp are in the Dev Tooling category. agent-bridge has 404 stars, while fastapi_mcp has 12.0k stars.
Which is better, agent-bridge or fastapi_mcp?
The best choice depends on your use case. Choose agent-bridge if Connect Claude Code and Codex in a single workflow for collaborative development, and fastapi_mcp if Integrating FastAPI services as tools for large language models (LLMs) that support MCP..
Is agent-bridge free or open source?
Yes, agent-bridge 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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