Accountless, pay-per-use code execution: submit source code over HTTP 402, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient. Also hosts a free directory of x402 services (GET /listings) with per-row liveness data: Every row carries its own liveness data (lastProbeCode, lastSeenAlive, dead): lastProbeCode is the outcome of the last probe we ran, and lastSeenAlive is the Unix ms of the last probe it PASSED -- null if it has never passed one, and older than the last probe we ran on a row that is curre
Data: x402-list.com (CC BY 4.0)
Unclaimed has 1 live API on PayAPI Market with 18 endpoints in total, in Data: agent-exec -- pay-per-use code execution for agents.
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.