> 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/application-rsa-authentication.md).

# Authenticate App

{% openapi src="/files/QTYCdVMbKdCr4AG0pr4r" path="/v1/pubkey/app/authenticate/extensionApp" method="post" expanded="true" fullWidth="true" %}
[login-api-public.yaml](https://544392450-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F909t04Fk8FiEI7fBcmlw%2Fuploads%2Fgit-blob-0a6a293d0a6cdb3b172f2d2f3cb550af3be41315%2Flogin-api-public.yaml?alt=media)
{% endopenapi %}