Deterministic PDF rendering API: GitHub-flavoured Markdown or a compact DSL to tagged, PDF/A-2A + PDF/UA-1 dual-compliant PDFs. Authenticate with a Bearer token (API key or OAuth device flow), or pay per call via x402 (USDC on Base) on the x402-tagged operations. Errors use the shared Error schema. Rate limits are reported in RateLimit / RateLimit-Policy headers, with Retry-After on 429. Versioning: the major version is in the path (/api/v1); breaking changes ship as a new version, and a deprecated endpoint keeps working for at least 90 days after it starts sending Deprecation and Sunset heade
Data: x402-list.com (CC BY 4.0)
Unclaimed has 1 live API on PayAPI Market with 2 endpoints in total, in Tools: makesPDF 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.