Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. Operations: make fillable, fill from values, fill from documents, read a filled form back, send by fax. Pay per operation over plain HTTP with x402 or MPP, no account needed. The account API, the MCP server and the A2A agent are described at the links in x-service-info.
Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
Unclaimed has 1 live API on PayAPI Market with 5 endpoints in total, in Data: Emboss.
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.