Fetchx402 — pay per request utility APIs

external

DNS, SSL, WHOIS, host intelligence, HTTP headers, redirect tracing, and uptime checks for AI agents. Pay in USDC on Base via x402. Sister product to Fetch402.

by Fetchx4027 endpoints100% uptime2709ms avg

Price

from $0.0050

up to $0.0150 per request

Network

base

Base URL

https://api.fetchx402.com

Endpoints (7)

Discovered from on-chain x402 payment activity. Prices shown are per-call in USDC.

POST/v1/bundles/host-intel

base$0.0150

DNS, leaf TLS, and RDAP/WHOIS for one hostname in a single settle. Use when you need live host facts together and must not guess. Child errors stay in-field; we do not invent data.

POST/v1/bundles/uptime-check

base$0.0150

One-shot reachability: DNS, leaf TLS, and origin headers for one hostname in a single settle. Use when you need live up/degraded/down and must not guess. Child errors stay in-field; we do not invent data.

POST/v1/tools/dns

base$0.0050

Resolve public DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) for a domain. Use when you need live DNS data and must not guess from memory or training data.

POST/v1/tools/headers

base$0.0050

Read allowlisted HTTPS response headers for a hostname (HSTS, CSP, server, CORS). Use when you need live origin headers and must not guess. HEAD of https://{domain}/ on :443; GET if HEAD is 405/501. Redirects are not followed.

POST/v1/tools/resolve-redirect

base$0.0050

Trace HTTPS redirects for a hostname. Use when you need live hop facts and must not guess. HEAD of https://{domain}/ on :443 (GET if 405/501); follow Location up to 5 hops. HTTPS :443 only after ConnectGuard. Bodies are omitted.

POST/v1/tools/ssl-check

base$0.0050

Inspect the leaf TLS certificate for a public hostname (validity, issuer, SANs, fingerprint, expiry). Use when you need live cert facts and must not guess. Expired or hostname-mismatched certs still return JSON flags.

POST/v1/tools/whois

base$0.0050

Look up domain registration facts via RDAP (registrar, status, dates, nameservers, DNSSEC). Use when you need live registry data and must not guess. Unregistered names return not_found.

Payment

Protocolx402 (direct payment, USDC)

Networkbase

Pay to0x3323...57d3

How to call

Via APIHub (recommended)No wallet · pay with credits · gasless

# one-time setup
npx @apihubio/cli register
npx @apihubio/cli topup 10

# call it
npx @apihubio/cli call https://api.fetchx402.com \
  -X POST \
  -d '{ /* check provider docs for input */ }'

# or save it to Claude/Cursor/Codex
npx @apihubio/cli install
npx @apihubio/cli add https://api.fetchx402.com

APIHub pays the provider on your behalf and debits your credit balance for the exact amount. No wallet setup, no gas, no per-call signing.

Via direct x402 (advanced)Bring your own wallet

import { wrapFetchWithPayment } from "@x402/fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");
const client = createWalletClient({ account, chain: base, transport: http() });
const x402Fetch = wrapFetchWithPayment(client);

const res = await x402Fetch("https://api.fetchx402.com", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ /* check provider docs for input */ }),
});
const data = await res.json();

Requires USDC on Base and gas on each call. The @x402/fetch client signs EIP-3009 transferWithAuthorization for each 402 response and retries.

This is an external service not operated by APIHub. Listing data is sourced from public on-chain records and third-party indexes. Payment goes directly to the service provider via the x402 protocol. APIHub does not guarantee availability, accuracy, or quality of external services.