Description

A2A MCP Server bridges the Model Context Protocol with Google's Agent-to-Agent protocol, enabling MCP clients like Claude to discover, register, and communicate with A2A agents through a unified interface. Developed by GongRzhe, it provides tools for agent management (registration, listing, unregistration), message sending with both synchronous and streaming responses, and task management including result retrieval and cancellation. The implementation supports multiple transport types (stdio, HTTP, SSE), includes persistent storage for agent registrations and task mappings, and handles the protocol translation between MCP's tool-based interface and A2A's JSON-RPC messaging, making it valuable for integrating existing A2A agents into MCP-compatible AI assistant workflows.

Installation 

npx -y a2a-mcp-server
npm install a2a-mcp-server
git clone https://github.com/gongrzhe/a2a-mcp-server

Claude Desktop Configuration

Add this configuration to your Claude Desktop config file to enable this MCP server:

Config file location: ~/Library/Application Support/Claude/claude_desktop_config.json

Config file location: %APPDATA%\Claude\claude_desktop_config.json

Config file location: ~/.config/Claude/claude_desktop_config.json

claude_desktop_config.json 
{
  "mcpServers": {
    "a2a-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "a2a-mcp-server"
      ]
    }
  }
}