Fast, reliable network tools API. 13 endpoints: IP lookup, DNS records, SSL certificates, port scanning, email validation, WHOIS, IP geolocation, blacklist check, subnet calculator, AI domain security audit, web page to Markdown, company profile enrichment, PDF to Markdown. Free tier: 25 req/day. Pro: 10,000 req/day. Crypto payments (BTC, ETH, USDC). Pay-per-call without an account: the /x402/v1 routes accept x402 payments in USDC on Base (no API key, no signup).
Data: x402-list.com (CC BY 4.0)
Unclaimed has 1 live API on PayAPI Market with 11 endpoints in total, in Tools: ipv4.fr Network Tools API.
Are Unclaimed's APIs verified?
Not yet. Unclaimed's listings are live and answer an x402 payment challenge, but PayAPI Market has not paid for a call to them, so none carries a settlement-verified badge.
How do I pay for Unclaimed's APIs?
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription, and Unclaimed keeps 100% of each payment.