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.
#8
$1.23
1
1
Points earned against points available, biggest lever first.
| #3 | 44 | 158 txns | $0.10 |
| #4 | 43 | 67 txns | $0.01 |
| #5 | 41 | 3 txns | $20.00 |