User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:69.0) Gecko/20100101 Firefox/69.0

Expected results:

It would be great if Firefox uses the Secret Service API as an additional Password Manager. The Secret Service is the API that is implemented by the Gnome Keyring and KWallet. I know there is an Add-on1 for the Gnome Keyring, but it is not compatible with the latest Firefox.

For this API Firefox or an Add-on has to communicate with the Session DBus.

This probably supersedes bug 278343

What will happen with this bug, now?

AFAIK kwallet does not implement secret service. There was initial work on KSecretService, but it never completed.

I would like to add that KeePassXC supports this.

KDE support for Secrets Service DBus API is almost done and wait to merge.
https://invent.kde.org/frameworks/kwallet/-/merge_requests/11

For the record, the corresponding meta bug is bug 1463865