Check Explain

Last 30 days

Uptime

0.0%

Response time

- typical, - slowest 5%

Last check

2 h ago: Amount "0.03" is not in atomic token units

Next check

any minute now

How to call it

# bash or zsh: see the payment challenge (nothing is charged)
curl -g -i -X POST 'https://presign-guard.onrender.com/v1/check/explain' \
  -H 'content-type: application/json' \
  --data-raw '{"amount":"1000000","chainId":8453,"spender":"0x000000000022D473030F116dDEE9F6B43aC78BA3","token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","type":"approval"}'

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%2Fpresign-guard.onrender.com%2Fv1%2Fcheck%2Fexplain
const res = await pay("https://presign-guard.onrender.com/v1/check/explain", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: "{\"amount\":\"1000000\",\"chainId\":8453,\"spender\":\"0x000000000022D473030F116dDEE9F6B43aC78BA3\",\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"type\":\"approval\"}",
});
console.log(await res.json());

Example input

{
  "amount": "1000000",
  "chainId": 8453,
  "spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "type": "approval"
}

Example output

{
  "reasons": [
    {
      "code": "UNLIMITED_APPROVAL",
      "details": {
        "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
      },
      "severity": "orange",
      "subject": "0x000000000022d473030f116ddee9f6b43ac78ba3"
    }
  ],
  "verdict": "orange"
}

Security scan

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

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