> For the complete documentation index, see [llms.txt](https://docs.receipthero.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.receipthero.io/merchant-api-group.md).

# Merchant API

- [Authentication](https://docs.receipthero.io/merchant-api-group/authentication.md)
- [Card linking Receipt API](https://docs.receipthero.io/merchant-api-group/post-receipt.md)
- [Token Receipt API](https://docs.receipthero.io/merchant-api-group/token-receipt-api.md)
- [Dynamic QR Code](https://docs.receipthero.io/merchant-api-group/dynamic-qr-code.md)