Notarize

Last 30 days

Uptime

100%

Response time

655 ms typical, 655 ms slowest 5%

Last check

4 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://notary.forgemesh.io/api/notarize" \
  -H "content-type: application/json" \
  -d '{"client_timestamp":"2026-07-03T12:00:00Z","model_id":"openai/gpt-5","prompt":"What is 2+2?","response":"4"}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fnotary.forgemesh.io%2Fapi%2Fnotarize
const res = await pay("https://notary.forgemesh.io/api/notarize", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"client_timestamp":"2026-07-03T12:00:00Z","model_id":"openai/gpt-5","prompt":"What is 2+2?","response":"4"}),
});
console.log(await res.json());

Example input

{
  "client_timestamp": "2026-07-03T12:00:00Z",
  "model_id": "openai/gpt-5",
  "prompt": "What is 2+2?",
  "response": "4"
}

Example output

{
  "algorithm": "ed25519",
  "anchor": {
    "status": "pending"
  },
  "attestation_id": "att_0123456789abcdef01234567",
  "client_timestamp": "2026-07-03T12:00:00Z",
  "content_hash": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
  "model_id": "openai/gpt-5",
  "notarized_at": "2026-07-03T12:00:01.000Z",
  "payload_stored": false,
  "receipt_token": "private-receipt-token",
  "receipt_url": "https://notary.forgemesh.io/api/receipt/att_0123456789abcdef01234567",
  "signature": "base64-ed25519-signature",
  "signer_pubkey": "base64-ed25519-public-key"
}

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