X402check Verify

Last 30 days

Uptime

87.5%

Response time

1.7 s typical, 2.8 s slowest 5%

Last check

57 min ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://saylorinnovations.com/api/x402check/verify?url=https%3A%2F%2Fsaylorinnovations.com%2Fapi%2Fx402%2Ftest"

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%2Fsaylorinnovations.com%2Fapi%2Fx402check%2Fverify
const res = await pay("https://saylorinnovations.com/api/x402check/verify?url=https%3A%2F%2Fsaylorinnovations.com%2Fapi%2Fx402%2Ftest");
console.log(await res.json());

Example input

{
  "url": "https://saylorinnovations.com/api/x402/test"
}

Example output

{
  "accepted_networks": [
    "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "eip155:8453"
  ],
  "checked_at": "2026-09-30T04:00:00.000Z",
  "checks": {
    "accepts_well_formed": true,
    "content_type_json": true,
    "has_accepts_array": true,
    "has_payment_required_header": true,
    "has_x402_version": true,
    "payment_required_matches_body": true,
    "payment_required_valid": true,
    "reachable": true,
    "status_is_402": true,
    "valid_json": true
  },
  "found": true,
  "http_status": 402,
  "issues": [],
  "latency_ms": 210,
  "note": "Checks response shape, PAYMENT-REQUIRED transport header and x402 spec compliance only.",
  "service_name": "Saylor Innovations x402 Test",
  "url": "https://saylorinnovations.com/api/x402/test",
  "x402_compliant": true
}

Security scan

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