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

# API SDK Interfaces

In this section, we will introduce the API SDK interfaces that include both global interfaces and supported protocols interfaces.