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A2A MCP Server

A2A MCP Server

Public
regismesquita/MCP_A2A

Provides a developer-friendly Model Context Protocol server enabling Claude Desktop to register, list, and communicate with A2A protocol agents for enhanced agent interaction and integration.

python
0 tools
May 30, 2025
Updated Jun 4, 2025

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A2A MCP Server

A simple MCP server that provides Claude Desktop access to A2A protocol agents.

Developer friendly more than production ready, you can hack it to adapt to your needs and expand on whatever you need. But probably not the best idea to deploy into prod as-is.

Overview

This project was created to connect Claude Desktop with A2A (Agent-to-Agent) protocol agents, particularly those built with pcingola/a2a_min and fast-agent. It was developed as a personal project to assist with agent development and for fun.

Tools

The server provides three MCP tools:

  1. a2a_server_registry - Register or remove A2A servers

    {
      "action": "add", 
      "name": "security_audit", 
      "url": "http://localhost:8000"
    }
    
  2. list_agents - List all registered agents with their capabilities

    {}
    
  3. call_agent - Send a prompt to an agent and get its response

    {
      "agent_name": "security_audit",
      "prompt": "regismesquita/DevControlMCP"
    }
    

Workflow

The typical workflow is:

  1. Register an A2A server with a2a_server_registry
  2. List available agents with list_agents
  3. Call an agent with call_agent whenever needed

Local Testing

This server has been tested locally with a security audit agent built on fast-agent and a2a_min. It successfully enables Claude Desktop to communicate with A2A agents.

Purpose

This bridge allows Claude Desktop to interact with any A2A-compatible agent, extending Claude's capabilities through the MCP tools interface.

Screenshot

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