How to create new private addons

Hello, firstly i know my English language is bad that’s why i’m so so sorry…

I want to write a plugin that is private and only available to certain people. How can I do that?

in addition; I don’t want to use Tampermonkey

please help me :frowning:

You are not required to use the Mozilla Add-ons (public) site. You can distribute your extension from your own website or cloud storage with whatever access security you like. (There is a decision when you submit your extension whether to host it on the Mozilla Add-ons site or on your own site.)