ACP Bridge

PyPI version Python 3.11+ License: MIT

A bridge server that connects Agent Communication Protocol (ACP) agents with Model Context Protocol (MCP) clients, enabling seamless integration between ACP-based AI agents and MCP-compatible tools like Claude Desktop.

✨ Features

• 🔄 Protocol Bridge: Seamlessly connects ACP agents with MCP clients
• 🚀 Multiple Transports: Supports STDIO, SSE, and Streamable HTTP
• 🤖 Agent Discovery: Automatic discovery and registration of ACP agents
• 🧠 Smart Routing: Intelligent routing of requests to appropriate agents
• 🔄 Async Support: Full support for synchronous and asynchronous operations
• 💬 Interactive Sessions: Support for multi-turn agent interactions
• 🌐 Multi-Modal: Handle text, images, and other content types

🚀 Quick Start

Installation

# Install from PyPI
pip install acp-mcp-server

# Or use uvx for isolated execution
uvx acp-mcp-server

Basic Usage

# Run with STDIO (default, for Claude Desktop)
acp-mcp-server

# Run with SSE transport
acp-mcp-server --transport sse --port 8000

# Run with HTTP transport
acp-mcp-server --transport streamable-http --host 0.0.0.0 --port 9000

# Connect to different ACP server
acp-mcp-server --acp-url http://localhost:8001

Using with Claude Desktop

Add to your Claude Desktop configuration:

{
  "mcpServers": {
    "acp-bridge": {
      "command": "uvx",
      "args": ["acp-mcp-server"]
    }
  }
}

📋 Requirements

• Python 3.11+
• Running ACP server with agents
• FastMCP for protocol implementation

🔧 Configuration

Environment Variables

• ACP_BASE_URL: ACP server URL (default: http://localhost:8000)

Command Line Options

usage: acp-mcp-server [-h] [--transport {stdio,sse,streamable-http}] [--host HOST] [--port PORT] [--path PATH] [--acp-url ACP_URL] [--version]

options:
  -h, --help            show this help message and exit
  --transport {stdio,sse,streamable-http}
                        Transport protocol (default: stdio)
  --host HOST           Host address for HTTP transports (default: 127.0.0.1)
  --port PORT           Port number for HTTP transports (default: 8000)
  --path PATH           URL path for HTTP transports (default: /mcp)
  --acp-url ACP_URL     ACP server URL (default: http://localhost:8000)
  --version             show program's version number and exit

🛠️ Available Tools

The bridge server provides several MCP tools:

Agent Management

• discover_acp_agents: Discover available ACP agents
• get_agent_info: Get detailed information about specific agents

Agent Execution

• run_acp_agent: Execute agents in sync/async modes
• get_async_run_result: Retrieve results from async executions
• list_active_runs: List all active agent runs

Smart Routing

• smart_route_request: Intelligently route requests to best agents
• test_routing: Test routing logic without execution
• add_routing_rule: Add custom routing rules
• list_routing_strategies: View all routing strategies

Interactive Sessions

• start_interactive_agent: Start interactive agent sessions
• provide_user_input: Provide input to waiting agents
• list_pending_interactions: View pending interactions

Message Processing

• convert_acp_message: Convert between ACP and MCP formats
• analyze_message_content: Analyze message structure and content

🏗️ Architecture

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   MCP Client    │    │  ACP-MCP Bridge │    │   ACP Agents    │
│ (Claude Desktop)│◄──►│     Server      │◄──►│ (echo, chat,    │
│                 │    │                 │    │  translate...)  │
└─────────────────┘    └─────────────────┘    └─────────────────┘
       │                         │                       │
   MCP Protocol            Protocol Bridge         ACP Protocol
  (STDIO/SSE/HTTP)        (FastMCP + aiohttp)    (HTTP/WebSocket)

🔌 Transport Modes

STDIO (Default)

Perfect for Claude Desktop integration:

acp-mcp-server

SSE (Server-Sent Events)

For web applications and streaming:

acp-mcp-server --transport sse --port 8000

Streamable HTTP

For REST API integration:

acp-mcp-server --transport streamable-http --port 9000

🐳 Docker

Quick Start with Docker

# Build the image
docker build -t acp-mcp-server .

# Run with Streamable HTTP transport
docker run -p 9000:9000 acp-mcp-server

# Run with SSE transport
docker run -p 8000:8000 acp-mcp-server \
  --transport sse --host 0.0.0.0 --port 8000

# Connect to custom ACP server
docker run -p 9000:9000 -e ACP_BASE_URL=http://my-acp-server:8001 acp-mcp-server

Using Docker Compose

# Run HTTP transport service
docker-compose up acp-mcp-http

# Run SSE transport service
docker-compose up acp-mcp-sse

# Run both services
docker-compose up

# Run development mode with live code reload
docker-compose --profile dev up acp-mcp-dev

Production Docker Image

For production deployments, use the multi-stage Dockerfile:

# Build production image
docker build -f Dockerfile.prod -t acp-mcp-server:prod .

# Run production container
docker run -d \
  --name acp-mcp-server \
  --restart unless-stopped \
  -p 9000:9000 \
  -e ACP_BASE_URL=http://your-acp-server:8000 \
  acp-mcp-server:prod

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔗 Related Projects

• FastMCP - Fast, Pythonic MCP server framework
• ACP SDK - Agent Communication Protocol SDK
• Claude Desktop - AI assistant with MCP support

📞 Support

• 🐛 Report Issues
• 💬 Discussions
• 📖 Documentation