> For the complete documentation index, see [llms.txt](https://apidocs.onekeypayments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.onekeypayments.com/api-reference/fragment-sdk.md).

# Fragment (SDK)

- [Overview](https://apidocs.onekeypayments.com/api-reference/fragment-sdk/overview.md): Learn the technical aspects about our Cards SDK, in order to have the ultimate native checkout experience.
- [All-in-one](https://apidocs.onekeypayments.com/api-reference/fragment-sdk/all-in-one.md)
- [Customize the UI](https://apidocs.onekeypayments.com/api-reference/fragment-sdk/all-in-one/customize-the-ui.md)
- [Lite](https://apidocs.onekeypayments.com/api-reference/fragment-sdk/lite.md)