Most wikis or resource/documentation sites have a local search bar on their homepage, Firefox has a feature where it lets you add a search keyword for that spec

Most wikis or resource/documentation sites have a local search bar on their homepage, Firefox has a feature where it lets you add a search keyword for that specific site. So if you add, say, pydocs as a keyword for docs.python.org you can do "@pydocs <query>" it looks up the query on that page.