Spend Check

Last 30 days

Uptime

7.1%

Response time

5.6 s typical, 5.6 s slowest 5%

Last check

3 h ago: Timed out

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://attester.dev/spend-check" \
  -H "content-type: application/json" \
  -d '{"amount_usd":0.25,"payTo":"attester.dev"}'

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%2Fattester.dev%2Fspend-check
const res = await pay("https://attester.dev/spend-check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"amount_usd":0.25,"payTo":"attester.dev"}),
});
console.log(await res.json());

Example input

{
  "amount_usd": 0.25,
  "payTo": "attester.dev"
}

Example output

{
  "attestation": {
    "verifier_address": "0x…"
  },
  "confidence": 0.6,
  "evidence": [
    {
      "known_target": true,
      "latest_verdict": "honoring",
      "source": "watchtower"
    }
  ],
  "signature": "0x…",
  "verdict": "caution"
}

Security scan

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

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