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mirrored listing x402 eip155:8453

FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement

FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement.

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Claim this listing
5000 (raw units)
price
3
calls / 30d
3
unique payers
2026-09-17
updated

Provider

fractalai.net.co · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "body": {
      "seal_body": {
        "amount": "20000",
        "network": "eip155:8453",
        "payer": "0x…",
        "resource": "https://example.com/api/x402/thing",
        "transaction": "0x…"
      }
    },
    "bodyType": "json",
    "description": "FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement.",
    "info": {
      "input": {
        "body": {
          "seal_body": {
            "amount": "20000",
            "network": "eip155:8453",
            "payer": "0x…",
            "resource": "https://example.com/api/x402/thing",
            "transaction": "0x…"
          }
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "seal": {
            "algorithm": "ml-dsa-65",
            "content_id": "…",
            "signature": "…"
          }
        },
        "type": "json"
      }
    },
    "method": "POST",
    "output": {
      "example": {
        "seal": {
          "algorithm": "ml-dsa-65",
          "content_id": "…",
          "signature": "…"
        }
      },
      "schema": {
        "properties": {
          "payment": {
            "description": "This call's own settlement receipt.",
            "type": "object"
          },
          "seal": {
            "description": "Independently FractalAI-signed ML-DSA-65 attestation of the settlement.",
            "type": "object"
          }
        },
        "required": [
          "seal"
        ],
        "type": "object"
      },
      "type": "json"
    },
    "route_key": "POST /api/x402/witness",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "headers": {
              "additionalProperties": {
                "type": "string"
              },
              "type": "object"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "queryParams": {
              "additionalProperties": {
                "type": "string"
              },
              "type": "object"
            },
            "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"
    },
    "serviceName": "FractalAI x402 Notary",
    "tags": [
      "witness",
      "notary",
      "post-quantum",
      "ml-dsa-65",
      "x402"
    ],
    "type": "http"
  }
}

Use it

curl

curl "https://fractalai.net.co/api/x402/witness"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://fractalai.net.co/api/x402/witness");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://fractalai.net.co/api/x402/witness")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/7694.json, and this resource appears in /discovery/resources and /discovery/search.