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.
# 1. Ask the endpoint what it costs (no payment, no wallet needed): curl -i -X GET 'https://api.fetchx402.com/v1/tools/headers' # -> HTTP/1.1 402 Payment Required # the response carries the price, asset and pay-to address. # 2. Pay and retry with any x402 client: npx x402-fetch 'https://api.fetchx402.com/v1/tools/headers'
Endpoint: https://api.fetchx402.com/v1/tools/headers. Operated by api.fetchx402.com, not by Animica. Price and availability were correct at the last probe on 2026-09-02 and are set by the operator, who may change them.
host intel: DNS, leaf TLS, and WHOIS/RDAP for one hostname in a single settle. Use when you need live host facts together and must not guess. Child errors stay …
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 …
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.
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 u…
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. Expi…
Look up domain registration facts via RDAP (registrar, status, dates, nameservers, DNSSEC). Use when you need live registry data and must not guess. Unregistere…