> For the complete documentation index, see [llms.txt](https://docs.ckbull.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ckbull.app/guides-and-concepts.md).

# Guides and Concepts

- [Introduction](https://docs.ckbull.app/guides-and-concepts/introduction.md)
- [Sign in request](https://docs.ckbull.app/guides-and-concepts/sign-in-request.md): Guide
- [Transaction request](https://docs.ckbull.app/guides-and-concepts/transaction-request.md): Guide