13trust / 100

Delivery Check

by x402 Doctor in Security & trust

x402 APIFailing, checked 8 min ago

Does this x402 endpoint really deliver? x402 Doctor buys it once with the example input its own listing declares (at most $0.1, USDC on Base), checks the answer against the declared output schema and measures the charge on chain. Answers with a job id at once; the result is public, usually within 30 minutes. For sellers who want proof, and buyers before a big order.

GET https://x402-doctor.fizzl.eu/api/v1/delivery-check

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
8 min ago: Amount "0.25" is not in atomic token units
Next check
in 51 min

How to call it

# bash or zsh: see the payment challenge (nothing is charged)
curl -g -i -X GET 'https://x402-doctor.fizzl.eu/api/v1/delivery-check?url=https%3A%2F%2Frest.coincap.io%2Fv3%2FagentFriendly%2Ffull_assets_by_slug'
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%2Fx402-doctor.fizzl.eu%2Fapi%2Fv1%2Fdelivery-check
const res = await pay("https://x402-doctor.fizzl.eu/api/v1/delivery-check?url=https%3A%2F%2Frest.coincap.io%2Fv3%2FagentFriendly%2Ffull_assets_by_slug");
console.log(await res.json());

Example input

{
  "url": "https://rest.coincap.io/v3/agentFriendly/full_assets_by_slug"
}

Example output

{
  "endpoint_price_usd": 0.002,
  "eta": "usually within 30 minutes",
  "id": "k3v9x2m7qa",
  "method": null,
  "queued_at": "2026-10-12T17:00:00.000Z",
  "status": "queued",
  "status_url": "https://x402-doctor.fizzl.eu/api/v1/delivery-check/k3v9x2m7qa",
  "url": "https://rest.coincap.io/v3/agentFriendly/full_assets_by_slug"
}

Security scan

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

Recent checks

WhenResultHTTPTimePrice
8 min agoAmount "0.25" is not in atomic token units4022.7 s$0.25
4 h agoAmount "0.25" is not in atomic token units4021.4 s$0.25
9 h agoAmount "0.25" is not in atomic token units4021.6 s$0.25
13 h agoTimed out---
18 h agoAmount "0.25" is not in atomic token units4027.3 s$0.25
22 h agoAmount "0.25" is not in atomic token units4021.9 s$0.25
25 h agoAmount "0.25" is not in atomic token units4021.3 s$0.25
34 h agoAmount "0.25" is not in atomic token units4023.0 s$0.25