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
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 8 min ago | Amount "0.25" is not in atomic token units | 402 | 2.7 s | $0.25 |
| 4 h ago | Amount "0.25" is not in atomic token units | 402 | 1.4 s | $0.25 |
| 9 h ago | Amount "0.25" is not in atomic token units | 402 | 1.6 s | $0.25 |
| 13 h ago | Timed out | - | - | - |
| 18 h ago | Amount "0.25" is not in atomic token units | 402 | 7.3 s | $0.25 |
| 22 h ago | Amount "0.25" is not in atomic token units | 402 | 1.9 s | $0.25 |
| 25 h ago | Amount "0.25" is not in atomic token units | 402 | 1.3 s | $0.25 |
| 34 h ago | Amount "0.25" is not in atomic token units | 402 | 3.0 s | $0.25 |