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

# Guides

- [Register](https://docs.hashkey.id/developers/guides/register.md)
- [Query](https://docs.hashkey.id/developers/guides/query.md)
- [Libraries](https://docs.hashkey.id/developers/guides/libraries.md)
- [Credential API Rule](https://docs.hashkey.id/developers/guides/credential-api-rule.md)