> For the complete documentation index, see [llms.txt](https://dev.simplepay.ai/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.simplepay.ai/docs/javascript-sdk/services.md). # Services * [๐Ÿช™ Cryptocurrency](/docs/javascript-sdk/services/cryptocurrency.md) * [๐Ÿ’ต Currency](/docs/javascript-sdk/services/currency.md) * [๐Ÿงพ Invoice](/docs/javascript-sdk/services/invoice.md)