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

# Apps Authentication

- [Authenticate App](https://rest-api.symphony.com/main/application-authentication/application-rsa-authentication.md): Authenticate extension app with a public key. See also: Application Authentication in the Client Extension API documentation.
- [Pod Certificate](https://rest-api.symphony.com/main/application-authentication/pod-certificate-jwt.md): Retrieve the certificate that can be used to validate the JWT token obtained through the extension application authentication flow.