$0.02
per call · USD Coin on Base
Domain liveness check / verify / audit: DNS resolution (A/MX/NS/TXT records), whether mail routing exists, HTTP reachability.
Endpoint
GET https://x402-api-catalog.onrender.com/api/domain-check2
Calls / 30d
1
Unique payers / 30d
Sep 7
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://x402-api-catalog.onrender.com/api/domain-check", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://x402-api-catalog.onrender.com/api/domain-check?domain=example.com" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"domain": "example.com",
"hasMailRouting": true,
"hasWebPresence": true,
"httpReachable": true,
"verdict": "fully live"
}Payment details
0x9041f8a43d0b43209b9227de2c7fb25c9fe3847eUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of AI & Inference and the homepage with a featured placement.
More from PreFlight Checker & similar services
PreFlight Checker · Trust Check
x402-api-catalog.onrender.com
npm package trust check / risk score / security audit: registry age, weekly downloads, GitHub org/stars, OSV.dev vulnerabilities, typosquat detection.
PreFlight Checker · MCP Audit
x402-api-catalog.onrender.com
MCP server safety audit: completes a real initialize+tools/list handshake, then statically scans every tool's name/description/schema for hidden unicode (tool-poisoning), prompt-injection-style phrasing, and tools that quietly combine multiple high-privilege capabilities (network+filesystem+exec+credential access). If a GitHub repo is supplied, folds in a real software-supply-chain signal too.
PreFlight Checker · Contract Check
x402-api-catalog.onrender.com
EVM token contract safety check: honeypot detection, mint/blacklist/pausable/self-destruct capability, ownership renouncement, transfer tax, and a real token-impersonation check (does the symbol claim to be USDC/WETH/DAI/cbBTC at the wrong address — the token equivalent of npm typosquatting).