MCP 协议 2025-06-18
Model Context Protocol
AI模型与外部工具系统交互的标准化协议 - VibeCLI 2.0 基于MCP协议实现AI工具与外部系统的标准化交互
协议特性
Streamable HTTP Transport - 流式HTTP传输
OAuth 2.1 Security - 企业级安全认证
Elicitation System - 智能信息获取
Structured Output - 结构化数据输出
Resource Management - 资源管理机制
Tool Invocation - 工具调用框架
应用场景
• AI助手与开发工具集成
• 自动化项目生成系统
• 智能代码分析和重构
• 多平台部署管理
• 企业级AI工作流
• 开发者工具生态系统
协议架构
MCP四层架构设计，确保可靠性和扩展性
Transport Layer
传输层
基于HTTP的可靠通信协议
HTTP/2 多路复用支持
Server-Sent Events (SSE)
Connection Keep-Alive
Last-Event-ID 断点续传
Error Recovery 机制
Compression 数据压缩
Security Layer
安全层
OAuth 2.1 + RFC 8707 增强安全
RFC 8707 Resource Indicators
Protected Resource Metadata
Audience Restriction
Token Misuse Prevention
Enhanced Security Compliance
Scope-based Access Control
Protocol Layer
协议层
MCP消息格式和交互模式
Request/Response Pattern
Notification Messages
Bidirectional Communication
Message Versioning
Schema Validation
Content Negotiation
Application Layer
应用层
VibeCLI工具和资源实现
Tool Registration
Resource Discovery
Capability Negotiation
Context Management
Result Caching
Error Handling
消息类型
MCP协议支持的核心消息类型和交互模式
initializeClient → Server
初始化连接和能力协商
{
"jsonrpc": "2.0",
"method": "initialize",
"params": {
"protocolVersion": "string",
"capabilities": "object",
"clientInfo": "object"
}
}tools/callClient → Server
调用服务器端工具
{
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"name": "string",
"arguments": "object"
}
}resources/readClient → Server
读取服务器资源
{
"jsonrpc": "2.0",
"method": "resources/read",
"params": {
"uri": "string"
}
}prompts/getClient → Server
获取预定义提示模板
{
"jsonrpc": "2.0",
"method": "prompts/get",
"params": {
"name": "string",
"arguments": "object"
}
}实现指南
如何基于MCP协议集成VibeCLI功能
1. 协议初始化
建立MCP连接并协商能力
// 1. 建立SSE连接
const eventSource = new EventSource('https://api.vibecli.com/mcp/sse', {
headers: {
'Authorization': 'Bearer your_token'
}
});
// 2. 发送初始化消息
const initMessage = {
jsonrpc: '2.0',
id: 1,
method: 'initialize',
params: {
protocolVersion: '2025-06-18',
capabilities: {
tools: true,
resources: true,
prompts: true
},
clientInfo: {
name: 'MyApp',
version: '1.0.0'
}
}
};
fetch('https://api.vibecli.com/mcp/messages', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer your_token'
},
body: JSON.stringify(initMessage)
});2. 工具调用
调用VibeCLI核心工具
// 调用项目分析器
const analyzeProject = async (requirement) => {
const message = {
jsonrpc: '2.0',
id: 2,
method: 'tools/call',
params: {
name: 'project_analyzer',
arguments: {
requirement,
preferences: {
framework: 'Next.js',
database: 'PostgreSQL'
}
}
}
};
const response = await fetch('https://api.vibecli.com/mcp/messages', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer your_token'
},
body: JSON.stringify(message)
});
return await response.json();
};3. 资源访问
读取模板和配置资源
// 读取项目模板
const getTemplate = async (templateUri) => {
const message = {
jsonrpc: '2.0',
id: 3,
method: 'resources/read',
params: {
uri: templateUri
}
};
const response = await fetch('https://api.vibecli.com/mcp/messages', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer your_token'
},
body: JSON.stringify(message)
});
const result = await response.json();
return result.result.contents;
};4. 错误处理
处理协议错误和重连
// 错误处理和重连机制
class MCPClient {
constructor(apiKey) {
this.apiKey = apiKey;
this.reconnectAttempts = 0;
this.maxReconnectAttempts = 5;
}
connect() {
this.eventSource = new EventSource('https://api.vibecli.com/mcp/sse');
this.eventSource.onerror = (error) => {
console.error('MCP Connection error:', error);
this.handleReconnect();
};
this.eventSource.onmessage = (event) => {
try {
const message = JSON.parse(event.data);
this.handleMessage(message);
} catch (error) {
console.error('Message parsing error:', error);
}
};
}
handleReconnect() {
if (this.reconnectAttempts < this.maxReconnectAttempts) {
setTimeout(() => {
this.reconnectAttempts++;
this.connect();
}, Math.pow(2, this.reconnectAttempts) * 1000);
}
}
}