> For the complete documentation index, see [llms.txt](https://developer.prodege.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.prodege.com/demand/authentication.md).

# Authentication

- [Request Expiration](https://developer.prodege.com/demand/authentication/request-expiration.md)
- [Request Signing](https://developer.prodege.com/demand/authentication/request-signing.md)
- [Link Signing](https://developer.prodege.com/demand/authentication/link-signing.md)