here's a link that may help, I am using a similar method to post to lemmy from calckey.

@[email protected]

unfortunately, it seems a feature request to add microblogging functionality to lemmy was rejected by the devs: https://github.com/LemmyNet/lemmy/issues/3402

based on what she mentioned here, most likely not

@[email protected] using an instance of the rimgo alt frontend, the url becomes: https://rimgo.kling.gg/a/F3i13pF

nice and lightweight, no js required 🆒 #altfrontends