Ten pay-per-call tools for agents: web read, fetch URL and URL to Markdown (batch, optional JavaScript rendering), batch web contents (up to 20 URLs), website change monitoring with hashes and line diffs, UK attraction changes, PDF text extraction and PDF pre-check, prompt-injection check (pattern rules plus a local Qwen3-4B classifier, rules-only fallback) and sanctions screening (UK, OFAC, EU, UN lists). x402 USDC on Base or Algorand, no account or API key.
Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
Unclaimed has 1 live API on PayAPI Market with 10 endpoints in total, in Tools: AgentWork Web Evidence.
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.