{
  "x402Version": 2,
  "id": 12378,
  "slug": "12378",
  "resource": "https://numberintel.dev/v1/attest",
  "description": "Signed settlement attestation: we make a REAL x402 purchase from your target endpoint (up to $0.1), grade the delivered response against its advertised schema, and return an EIP-191-signed attestation embedding the on-chain USDC receipt. Proof-of-real-delivery for directories, reputation systems and sellers.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x9A8dfBE7A11ee89dD59D80c93AB0EfE00D5D5767",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "250000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "max_spend_usd": 0.05,
            "method": "GET",
            "target": "https://api.example.com/v1/data"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "attestation": {
              "attestor": "0x3708...9234",
              "delivery": {
                "http_status": 200,
                "is_json": true,
                "paid_latency_ms": 900,
                "schema_match_ratio": 1,
                "sha256": "..."
              },
              "grade": "delivered",
              "id": "a1b2c3d4e5f60718",
              "purchase": {
                "quote_usd": 0.01,
                "receipt": {
                  "network": "eip155:8453",
                  "transaction": "0x..."
                },
                "settled": true
              },
              "target": "https://api.example.com/v1/data",
              "version": 1
            },
            "signature": "0x..."
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "body": {
                    "description": "JSON body for POST targets",
                    "type": "object"
                  },
                  "max_spend_usd": {
                    "description": "cap on target spend, hard max 0.1",
                    "type": "number"
                  },
                  "method": {
                    "description": "GET or POST",
                    "type": "string"
                  },
                  "target": {
                    "description": "https URL of the x402 endpoint to buy from",
                    "type": "string"
                  }
                },
                "required": [
                  "target"
                ],
                "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"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "numberintel.dev",
  "lastUpdated": "2026-09-18T17:59:35.207Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-18T17:59:59.349Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "numberintel.dev",
    "manifest_name": "numberintel.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}