Connect "external site" application with the same username and pawword from nextcloud?


in my nextcloud, I have a username and a password and I have a second application (e.g. openproject) that also use an username and password.

It is possible with the app “external sites”, that nextcloud transfer the username and userpassword to the fields from the second application and do a autologin?

Aim is it, that I must not repeat the login process in the second application.


I would like to do the same…
Anyone found a solution?