{
  "x402Version": 2,
  "id": 13436,
  "slug": "13436",
  "resource": "https://x402.fairseal.io/v1/notarize",
  "description": "Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key header to prevent double-charges on retry.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "metadata": {
              "agent_id": "my-agent-v1",
              "decided_at": "2026-09-12T10:00:00Z",
              "decision_hash": "b94f6f125c79e3a5ffaa826f584c10d52ada669e6762051b826b55776d05a3d7",
              "input_hash": "a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3"
            },
            "payload_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
            "schema": "agent_decision"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "metadata": {
                    "description": "Schema-specific metadata. agent_decision requires {agent_id, decided_at, input_hash, decision_hash}",
                    "type": "object"
                  },
                  "payload_hash": {
                    "description": "SHA-256 hex of full payload (64 lowercase hex chars)",
                    "pattern": "^[0-9a-f]{64}$",
                    "type": "string"
                  },
                  "schema": {
                    "enum": [
                      "agent_decision",
                      "audit_evidence",
                      "probe_record"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "schema",
                  "payload_hash",
                  "metadata"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "x402.fairseal.io",
  "lastUpdated": "2026-09-16T02:12:53.555Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-16T02:12:52.983Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "x402.fairseal.io",
    "manifest_name": "x402.fairseal.io",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}