papis-firefox is a Firefox add-on for integration with Papis, a powerful command-line bibliography manager for Linux. It allows to add an entry in Papis using the url of the current page. It installs a button in the navigation bars that simply executes in a new terminal the command: papis add --from-url <url>with <url> being the url of the current tab or papis add --from-doi <doi> if a DOI is found in the url.

Due to the security restrictions on web extensions, the add-on cannot execute the command itself. It requires a connector app written in Python. The web extension sends thes url to the connector app, using native messaging, that executes the command.