81trust / 100

Doctor Payment

by Maxwell x402 in Markets & finance

x402 APIPassing, checked 7 min ago

x402 Doctor: why a payment failed, in plain words: the cause, whose side it is on (your client, your wallet, the network, the seller or the facilitator) and how to fix it, from over 40 named causes (x402 and Coinbase facilitator codes, EVM and Solana, HTTP and network errors). Send the seller 402 as challenge and the error as response, by POST JSON or GET query. Unknown failures are reviewed nightly.

POST https://api.maxwellinternational.ai/v1/doctor/payment

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
79 ms typical, 265 ms slowest 5%
Last check
7 min ago
Next check
in 24 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://api.maxwellinternational.ai/v1/doctor/payment" \
  -H "content-type: application/json" \
  -d '{"challenge":"402","response":"{\"invalidReason\":\"invalid_exact_evm_payload_signature\"}","url":"https://example.com/api"}'
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%2Fapi.maxwellinternational.ai%2Fv1%2Fdoctor%2Fpayment
const res = await pay("https://api.maxwellinternational.ai/v1/doctor/payment", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"challenge":"402","response":"{\"invalidReason\":\"invalid_exact_evm_payload_signature\"}","url":"https://example.com/api"}),
});
console.log(await res.json());

Example input

{
  "challenge": "402",
  "response": "{\"invalidReason\":\"invalid_exact_evm_payload_signature\"}",
  "url": "https://example.com/api"
}

Example output

{
  "verdict": "client_problem"
}

Security scan

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

Recent checks

WhenResultHTTPTimePrice
7 min agoPassed402412 ms$0.005
5 h agoPassed40266 ms$0.005
8 h agoPassed40267 ms$0.005
11 h agoPassed402265 ms$0.005
16 h agoPassed40279 ms$0.005