ToolVet
81trust / 100

Notarize

by notarize in Onchain & crypto

x402 APIPassing, checked 2 h ago

Notarize a public URL: we fetch it ourselves and return a signed snapshot (final URL, HTTP status, content-type, sha256 of the body, server timestamp, upstream host) with TWO cryptographic attestations — a plain EIP-712 signature and an EAS off-chain (Version2) attestation. Proves what this endpoint observed at fetch time (integrity + timestamp + non-repudiation). mode=hash (default) returns metadata + hash only; mode=full also returns the body.

GET https://api.agentstools.dev/notarize

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
25 ms typical, 25 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.agentstools.dev/notarize?mode=hash&url=https%3A%2F%2Fexample.com"
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 $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Fnotarize
const res = await pay("https://api.agentstools.dev/notarize?mode=hash&url=https%3A%2F%2Fexample.com");
console.log(await res.json());

Example input

{
  "mode": "hash",
  "url": "https://example.com"
}

Example output

{
  "attestations": {
    "eas_offchain": {
      "signer": "0x48Cb...8960",
      "uid": "0x..."
    },
    "eip712": {
      "signature": "0x...",
      "signer": "0x48Cb...8960"
    }
  },
  "attestor": "0x48Cb...8960",
  "mode": "hash",
  "snapshot": {
    "content_length": 1256,
    "content_type": "text/html",
    "fetched_at": "2026-07-03T00:00:00Z",
    "final_url": "https://example.com/",
    "http_status": 200,
    "sha256": "0xb1946ac9...",
    "upstream_host": "example.com"
  }
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed40225 ms$0.008
7 h agoPassed40227 ms$0.008