AgentIndex icon
AgentIndex
mcp-debug logo
mcp-debug
★ 37
vs
agent-bridge logo
agent-bridge
★ 404

mcp-debug vs agent-bridge

mcp-debug: `mcp-debug` is a command-line tool designed for debugging Model Context Protocol (MCP) servers. It allows developers to inspect server capabilities, debug tool integrations, and test server notifications, offering features like OAuth 2.1 authentication and an interactive REPL.; 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.

01

TL;DR

mcp-debug logo
mcp-debugDev Tooling · ★ 37

Debugging and inspecting the capabilities and behavior of MCP servers.

Read mcp-debug full review →
agent-bridge logo
agent-bridgeDev Tooling · ★ 404

Connect Claude Code and Codex in a single workflow for collaborative development

Read agent-bridge full review →
02

Side-by-Side Comparison

Field
mcp-debug logomcp-debug
agent-bridge logoagent-bridge
Category
Dev Tooling
Dev Tooling
Stars
★ 37
★ 404
License
Apache-2.0
MIT
Install Command
go install github.com/giantswarm/mcp-debug@latest
npm install -g @raysonmeng/agentbridge && abg init
Updated
1d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
CLI, Debugging, MCP
agent-collaboration, claude-code, cli
03

Features

mcp-debug logomcp-debug
01Connect to any MCP Server using `streamable-http` transport.
02Full OAuth 2.1 Authentication compliance with automatic discovery, resource indicators, and PKCE validation.
03Interactive REPL to explore available tools, resources, and prompts.
04Acts as an MCP server itself, enabling integration with AI assistants.
05Verbose logging of JSON-RPC messages for in-depth debugging and shell autocompletion.
agent-bridge logoagent-bridge
01Two-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)
04

Use Cases

mcp-debug logomcp-debug
↳Debugging and inspecting the capabilities and behavior of MCP servers.
↳Testing and integrating custom tools with MCP servers.
↳Running as an MCP server to enable integration with AI assistants like Cursor.
↳Interactively exploring and understanding the available tools, resources, and prompts on an MCP server.
↳Analyzing detailed JSON-RPC message flows for troubleshooting and protocol adherence.
agent-bridge logoagent-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
FAQ

FAQ

What is the difference between mcp-debug and agent-bridge?
Both mcp-debug and agent-bridge are in the Dev Tooling category. mcp-debug has 37 stars, while agent-bridge has 404 stars.
Which is better, mcp-debug or agent-bridge?
The best choice depends on your use case. Choose mcp-debug if Debugging and inspecting the capabilities and behavior of MCP servers., and agent-bridge if Connect Claude Code and Codex in a single workflow for collaborative development.
Is mcp-debug free or open source?
Yes, mcp-debug is open source on GitHub (Apache-2.0).
Is agent-bridge free or open source?
Yes, agent-bridge is open source on GitHub (MIT).
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Related

Alternatives to mcp-debug →Alternatives to agent-bridge →mcp-debug details →agent-bridge details →