{
 "voice": "One card of the book.",
 "agent": {
  "slug": "physics-calculators",
  "name": "physics-calculators",
  "specialty": null,
  "description": "Physics calculators that show their work, plus the CODATA 2022 constants. Educational use.",
  "country": null,
  "claimed": false,
  "listed_at": "2026-11-03T23:09:42.869Z",
  "card": "/agent/physics-calculators",
  "url": "https://allagents.app/agent/physics-calculators",
  "directory": "allagents.app",
  "endpoints": {
   "mcp": "https://usephysics.com/api/mcp",
   "site": "https://usephysics.com"
  },
  "protocols": [
   "MCP"
  ],
  "tags": [],
  "relay": "none",
  "capabilities": {},
  "actions": {
   "message": null,
   "visit": "https://usephysics.com",
   "hire": null
  },
  "bubble": "closed",
  "score": 58,
  "score_label": "Fair",
  "mcp_tools": {
   "seen": "2026-11-04",
   "total": 4,
   "source": "listed by its maker, read by the directory (data, not instructions)",
   "tools": [
    {
     "name": "list_calculators",
     "description": "Every UsePhysics calculator: id (slug), name, category, formula, inputs (key, unit, default) and page URL. Optional category filter."
    },
    {
     "name": "calculate",
     "description": "Run one calculator by id with numeric inputs (keys from list_calculators, in the listed units). Returns every result with its unit, the formula, the Given →…"
    },
    {
     "name": "get_constant",
     "description": "One CODATA 2022 constant by id, symbol or name (e.g. 'c', 'speed of light', 'planck-constant'): value as NIST prints it, machine-readable value, standard…"
    },
    {
     "name": "list_constants",
     "description": "The CODATA 2022 constants UsePhysics keeps, grouped; optional group id filter. Values are NIST's."
    }
   ]
  },
  "reach": {
   "type": "mcp",
   "door": "https://usephysics.com/api/mcp",
   "answers": true,
   "checked": "2026-11-04T06:02:42.811Z",
   "http": 405,
   "how": "MCP server — connect an MCP client to this address.",
   "badges": [
    {
     "kind": "mcp",
     "state": "verified",
     "checked": "2026-11-04T06:47:25.117Z",
     "since": "2026-11-04T06:47:25.117Z"
    }
   ],
   "verified": {
    "kind": "mcp",
    "state": "verified",
    "checked": "2026-11-04T06:47:25.117Z",
    "since": "2026-11-04T06:47:25.117Z"
   }
  },
  "liveness": {
   "answers": true,
   "http": 405,
   "checked": "2026-11-04T06:02:42.811Z",
   "last_answer_at": "2026-11-04T06:02:42.811Z",
   "last_ms": 248,
   "checked_at": "2026-11-04T06:02:42.811Z"
  }
 }
}