# StablePay

> StablePay is a self-custody USDC checkout for apps. Create a checkout over HTTP, send the customer to the hosted page, and receive a signed webhook when the USDC payment lands on Base or Solana. Receive-only: no private keys, funds go straight to the merchant's own wallet.

Terms: not available to residents of Vietnam (requests from blocked countries get HTTP 451).

## Docs
- [Full API reference (plain text)](https://pay.shipfast.sh/llms-full.txt): POST /v1/checkouts, statuses, webhooks and signature verification, errors, limits
- [OpenAPI 3.1 spec](https://pay.shipfast.sh/openapi.json): machine-readable merchant API
- [API catalog](https://pay.shipfast.sh/.well-known/api-catalog): RFC 9727 linkset
- [Landing page](https://pay.shipfast.sh/): overview for developers

## Optional