https://api.postagent.sh/v1/print
Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the piece. Price is fixed per quote.
What this profile is sourced from
Raw HTTP — what an agent observes
GET https://api.postagent.sh/v1/print → HTTP/1.1 402 Payment Required X-Payment-Required: $1.3700 X-Payment-Currency: USDC X-Payment-Chain: base GET https://api.postagent.sh/v1/print X-Payment: <signed-receipt> → HTTP/1.1 200 OK Content-Type: application/json …response body…
Things to know before drawing strong conclusions
accepts[] entry is used.