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

# SDK

The `SBInit` function is used to initialize a payment flow on the Startbutton platform. This JavaScript SDK enables fast and secure payment processing in popup format, supporting a variety of payment channels.