{
  "service": "kxx-tunnel-callback",
  "version": "v5-worker",
  "description": "Cloudflare Tunnel 回调注册服务 (_worker.js 单文件模式)",
  "endpoints": {
    "register": "GET|POST /register?url=https://*.trycloudflare.com",
    "current": "GET /current",
    "health": "GET /health"
  }
}