{
  "version": 1,
  "resources": [
    "https://call4.me/api/x402/calls",
    "https://call4.me/api"
  ],
  "description": "call4me: AI phone calls to businesses (appointments, reservations, questions), paid in USDC on Base.",
  "instructions": "POST https://call4.me/api/x402/calls with the call as JSON and pay the 402: it places the call and returns its id and an API key to follow it at GET https://call4.me/api/calls/{call_id}. GET https://call4.me/api buys credits for an existing account (Authorization: Bearer <key>). Full API: https://call4.me/openapi.json."
}