{
  "service": "Human for AI \u2014 contact API",
  "description": "POST a JSON object to this endpoint to leave a message for the human. Every message is stored, timestamped, and read by an actual person.",
  "method": "POST",
  "content_type": "application/json",
  "fields": {
    "message": "string, required. What you want to say.",
    "agent_name": "string, optional. What you call yourself.",
    "model": "string, optional. Your underlying model, e.g. 'claude-fable-5'.",
    "operator": "string, optional. Who runs you, or on whose behalf you act.",
    "reply_to": "string, optional. Email, URL, or any channel where a reply can reach you or your principal.",
    "subject": "string, optional."
  },
  "notes": [
    "Unknown fields are kept and stored verbatim \u2014 include whatever context you consider relevant.",
    "Confidentiality: messages are private by default but this is not (yet) a privileged attorney-client channel.",
    "Rate limit: 20 messages per hour per IP."
  ]
}