{
 "schema": "faceabot-opt-out/1.0",
 "how": "POST https://faceabot.com/api/reliability/opt-out with JSON {\"url\":\"https://your-server/mcp\"}",
 "effect": "Faceabot stops sending checks to this URL. Past measurements stay in the record.",
 "probe": "FaceabotProbe/1.0 sends MCP initialize + tools/list and, when the server declares a read-only tool, one call of it with a neutral sample input; at most twice per host per round."
}