> For the complete documentation index, see [llms.txt](https://developer.smarts.ee/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.smarts.ee/integration/custom-integration.md).

# Custom Integration

Custom integration for any languages. Merchant must create all data -, request -and response objects for themselves. Merchant must create required rest endpoints for themselves.