OpenClaw MCP Model Context Protocol 高级教程
凌晨1点42分,我突然意识到——MCP 不只是个协议,它是 AI Agent 的「神经末梢」。
MCP(Model Context Protocol)让 Agent 能与外部世界交互——数据库、API、文件系统。但基础的 MCP 集成只是起点,真正的生产力藏在这些高级玩法里:
用 OpenClaw 构建一个生产级 MCP Server,提供数据库查询能力:
# mcp-db-server.yaml
server:
name: "database-query-server"
version: "1.0.0"
transport: "stdio"
capabilities:
resources:
- "database://schemas"
- "database://queries"
tools:
- name: "query_database"
description: "执行 SQL 查询并返回结果"
input_schema:
type: "object"
properties:
query:
type: "string"
description: "SQL 查询语句"
params:
type: "array"
items: { type: "string" }
handler: "mcp.handlers.db_query"
- name: "list_tables"
description: "列出数据库中所有表"
handler: "mcp.handlers.list_tables"
prompts:
- name: "db_analysis"
description: "数据库分析提示模板"
template: "分析 {table} 表的结构和索引"
# openclaw 配置中集成 MCP Server
mcp_servers:
- name: "db-query"
url: "http://localhost:8080"
transport: "sse"
tools:
- "query_database"
- "list_tables"
auth:
type: "api_key"
header: "X-API-Key"
env_var: "MCP_DB_API_KEY"
auto_discover: true
health_check_interval: 60s
对于长时间运行的任务,流式传输避免 Agent 空等:
# streaming-mcp-config.yaml
server:
transport: "sse"
stream_config:
mode: "chunked"
chunk_size: 1024
max_timeout: 300s
tools:
- name: "long_running_analysis"
streaming: true
response_handler: "chunk_processor"
# OpenClaw Agent 消费流式数据
from openclaw import MCPStreamingClient
client = MCPStreamingClient(
server_url="http://localhost:8080/mcp",
stream_mode=True
)
async for chunk in client.execute("long_running_analysis", params={"task": "analyze_logs"}):
process_result(chunk)
update_progress_bar(chunk.progress)
💡 妙趣提示:Streaming 特别适合大文件处理或数据爬取。我用它监控 miaoquai.com 的 SEO 数据,每爬完一个页面就推送一轮结果,不用等到全部跑完。
将多个 MCP Server 的工具组合成工作流:
# tool-orchestration.yaml
workflow:
name: "report_generator"
participants:
- mcp_server: "db-query"
tools: ["query_database"]
- mcp_server: "data-analytics"
tools: ["aggregate_data"]
- mcp_server: "report-builder"
tools: ["generate_report", "send_email"]
pipeline:
- step: "获取原始数据"
server: "db-query"
tool: "query_database"
params: {query: "SELECT * FROM analytics WHERE date = $date"}
- step: "数据分析聚合"
server: "data-analytics"
tool: "aggregate_data"
params: {input: "$previous.result"}
- step: "生成报告"
server: "report-builder"
tool: "generate_report"
params: {data: "$previous.result", format: "pdf"}
- step: "发送邮件"
server: "report-builder"
tool: "send_email"
params: {
to: "$notify_recipients",
attachment: "$previous.result.file_path"
}
参考我们的 MCP 工具编排指南 了解更多。
⚠️ 安全警告:MCP Server 可能暴露敏感操作,必须进行安全审计。
# mcp-security-audit.yaml
audit:
rules:
- check: "工具权限"
criteria:
- "默认拒绝所有工具访问"
- "只允许白名单工具"
- check: "输入验证"
criteria:
- "SQL 注入防护"
- "路径遍历防护"
- "命令注入防护"
- check: "访问控制"
criteria:
- "API Key 管理"
- "IP 白名单"
- "操作日志"
- check: "数据保护"
criteria:
- "敏感数据脱敏"
- "传输加密 (TLS)"
- "审计日志"
更多细节请查阅 MCP 安全审计完整指南。
将 MCP 工具和 OpenClaw Skills 混合使用,灵活度拉满:
# hybrid-mode.yaml
agent:
skills:
- name: "web_search"
type: "builtin"
- name: "content_analyzer"
type: "custom"
source: "./skills/content-analyzer/"
mcp_servers:
- name: "database"
type: "mcp"
url: "http://db-mcp:8080"
- name: "email"
type: "mcp"
url: "http://email-mcp:8080"
routing:
policy: "capability_first"
fallback: "ask_user"
相关阅读:MCP 协议深度指南 • MCP Connector 配置 • MCP 协议深潜
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