protocol-bridge（协议桥）

Protocol Bridge SKILL / 协议桥技能

English

SKILL Overview

Protocol Bridge is an AI Agent communication infrastructure SKILL that enables seamless cross-protocol agent interaction.

What This SKILL Does

This SKILL acts as a universal translator and router for AI agents, solving protocol incompatibility between MCP, A2A, LangChain, AutoGPT, and CrewAI.

Key Capabilities

1. Protocol Translation - Convert messages between different protocol formats
2. Intelligent Routing - Route to agents based on capabilities
3. Agent Discovery - Automatic registration and capability matching
4. Security - JWT, OAuth, API keys, mTLS support

Installation

npm install -g openclaw-protocol-bridge

Basic Usage

Start Bridge Server

protocol-bridge serve --port 8080

Register Agents

# Register MCP agent
protocol-bridge register --id agent-1 --protocol mcp --endpoint http://localhost:3001

# Register A2A agent  
protocol-bridge register --id agent-2 --protocol a2a --endpoint http://localhost:3002

Send Cross-Protocol Message

import { ProtocolBridge } from 'openclaw-protocol-bridge';

const bridge = new ProtocolBridge({
  protocols: {
    mcp: { enabled: true },
    a2a: { enabled: true }
  }
});

await bridge.initialize();

const result = await bridge.send({
  from: { id: 'agent-a', protocol: 'a2a' },
  to: { id: 'agent-b', protocol: 'mcp' },
  action: 'search',
  params: { query: 'test' }
});

Use Scenarios

1. Enterprise Multi-Agent System Connect HR, Finance, and IT agents across different protocols.

2. Multi-Framework Development Build agents with LangChain, AutoGPT, CrewAI - communicate seamlessly.

3. Protocol Migration Migrate from one protocol to another without rewriting agents.

Configuration

{
  "protocols": {
    "mcp": { "enabled": true },
    "a2a": { "enabled": true }
  },
  "routing": {
    "strategy": "capability-based"
  },
  "security": {
    "authentication": "jwt"
  }
}

CLI Commands

• protocol-bridge serve - Start bridge server
• protocol-bridge init - Initialize configuration
• protocol-bridge register - Register an agent
• protocol-bridge list - List all agents
• protocol-bridge health - Check system health

Advanced Features

Middleware Support

bridge.use(async (message, next) => {
  console.log(`${message.from.id} → ${message.to.id}`);
  return await next(message);
});

Agent Discovery

const agents = await bridge.discover({
  capabilities: ['search'],
  protocols: ['mcp', 'a2a']
});

Troubleshooting

Agent Not Found

protocol-bridge list

Connection Timeout Increase timeout in config:

{
  "routing": {
    "timeout": 60000
  }
}

Links

• GitHub: https://github.com/ZhenRobotics/openclaw-protocol-bridge
• npm: https://www.npmjs.com/package/openclaw-protocol-bridge

中文

SKILL 概述

Protocol Bridge 是一个 AI Agent 通信基础设施 SKILL，可实现无缝的跨协议 Agent 交互。

此 SKILL 的功能

此 SKILL 充当 AI Agent 的通用翻译器和路由器，解决 MCP、A2A、LangChain、AutoGPT 和 CrewAI 之间的协议不兼容问题。

核心能力

1. 协议转换 - 在不同协议格式之间转换消息
2. 智能路由 - 根据 Agent 的能力进行路由
3. Agent 发现 - 自动注册和能力匹配
4. 安全 - 支持 JWT、OAuth、API 密钥、mTLS

安装

npm install -g openclaw-protocol-bridge

基本使用

启动桥接服务器

protocol-bridge serve --port 8080

注册 Agent

# 注册 MCP Agent
protocol-bridge register --id agent-1 --protocol mcp --endpoint http://localhost:3001

# 注册 A2A Agent
protocol-bridge register --id agent-2 --protocol a2a --endpoint http://localhost:3002

发送跨协议消息

import { ProtocolBridge } from 'openclaw-protocol-bridge';

const bridge = new ProtocolBridge({
  protocols: {
    mcp: { enabled: true },
    a2a: { enabled: true }
  }
});

await bridge.initialize();

const result = await bridge.send({
  from: { id: 'agent-a', protocol: 'a2a' },
  to: { id: 'agent-b', protocol: 'mcp' },
  action: 'search',
  params: { query: 'test' }
});

使用场景

1. 企业多 Agent 系统 连接跨不同协议的人力资源、财务和 IT Agent。

2. 多框架开发 使用 LangChain、AutoGPT、CrewAI 构建 Agent - 无缝通信。

3. 协议迁移 从一个协议迁移到另一个协议，无需重写 Agent。

配置

{
  "protocols": {
    "mcp": { "enabled": true },
    "a2a": { "enabled": true }
  },
  "routing": {
    "strategy": "capability-based"
  },
  "security": {
    "authentication": "jwt"
  }
}

CLI 命令

• protocol-bridge serve - 启动桥接服务器
• protocol-bridge init - 初始化配置
• protocol-bridge register - 注册 Agent
• protocol-bridge list - 列出所有 Agent
• protocol-bridge health - 检查系统健康

高级功能

中间件支持

bridge.use(async (message, next) => {
  console.log(`${message.from.id} → ${message.to.id}`);
  return await next(message);
});

Agent 发现

const agents = await bridge.discover({
  capabilities: ['search'],
  protocols: ['mcp', 'a2a']
});

故障排查

找不到 Agent

protocol-bridge list

连接超时 在配置中增加超时：

{
  "routing": {
    "timeout": 60000
  }
}

链接

• GitHub: https://github.com/ZhenRobotics/openclaw-protocol-bridge
• npm: https://www.npmjs.com/package/openclaw-protocol-bridge

v1.0.0 | MIT License | ZhenRobotics