https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Na... exists to allow web extensions to talk with programs on the computer, its up to someone to write the extension and executable for that usecase
(The webextension might be in beta? When I installed it a month ago it was in "beta" and had to be installed directly from their site, idk if they've uploaded it to the store yet)
https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Na... exists to allow web extensions to talk with programs on the computer, its up to someone to write the extension and executable for that usecase