> 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/partner-app-api.md).

# Partner App API

- [Authentication](https://docs.receipthero.io/partner-app-api/authentication.md)
- [OAuth2 Flow](https://docs.receipthero.io/partner-app-api/oauth-access.md)
- [GET Receipt](https://docs.receipthero.io/partner-app-api/get-receipt.md)
- [Notifications](https://docs.receipthero.io/partner-app-api/notifications.md): ReceiptHero delivers webhook notifications on receipt and payment transaction arrival, as well as connection revoke events.