FabTally Agent API

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xccB5d25C698FdfdaA7B21d54088774cF512A90e3",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://fabtally.com/agent/v1/attest",
      "mimeType": "application/json",
      "description": "Independent point-in-time observation of a public URL, signed with ed25519. Fetches the URL from a neutral third-party host and returns HTTP status, final URL after redirects, sha256 of the exact bytes received, size, and cache headers — plus your chosen check (exists / contains a string / content hash). Useful when an agent needs a durable, verifiable record that a page said something at a specific moment."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xccB5d25C698FdfdaA7B21d54088774cF512A90e3",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://fabtally.com/agent/v1/quote",
      "mimeType": "application/json",
      "description": "Real FDM 3D-printing quote from a real slicer. Upload an STL/3MF/STEP and get print time, filament grams and a priced quote (material + machine time + setup, volume discounts). Runs a production slicing engine against calibrated machine profiles — not an estimate."
    },
    "x402Version": 2
  }
]