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

# Overview

- [API design](https://docs.powens.com/api-reference/overview/api-design.md)
- [Errors](https://docs.powens.com/api-reference/overview/errors.md)
- [Webview](https://docs.powens.com/api-reference/overview/webview.md)
- [Fair usage policy](https://docs.powens.com/api-reference/overview/fair-usage-policy.md): Powens implements a Fair Usage Policy to ensure optimal API performance for all users.
- [Authentication](https://docs.powens.com/api-reference/overview/authentication.md)