> For the complete documentation index, see [llms.txt](https://docs.rocketfuel.inc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rocketfuel.inc/developer-guides/api-reference/payins/custom-ui-integration.md).

# Custom UI Integration

You can refer to this link for custom integration: <https://payin-api.rocketfuel.inc/>

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