{
  "endpoints": {
    "graph": {
      "query": "GET /graph/query?entity=...&relation=...&limit=20",
      "stats": "GET /graph/stats"
    },
    "health": "GET /health",
    "semantic": {
      "health": "GET /semantic/health",
      "search": "POST /semantic/search"
    }
  },
  "name": "Milestone 4 Backend API",
  "version": "1.0.0"
}