Nevermind. I found it You can add Grok to the Firefox sidebar chatbot options via a simple configuration tweak in about:config. This works for both the official Grok at grok.x.ai or grok.com (x.com integration). Here's how to do it step by step: Open about:config: Type about:config in the Firefox address bar and press Enter. Click the "Accept the Risk and Continue" button (it's a warning page). Search for the preference: In the search bar at the top, type: browser.ml.chat.provider This should show a preference like browser.ml.chat.provider.list or similar (exact name may vary slightly by Firefox version, but it's usually under browser.ml.chat or browser.sidebar.ai related prefs). Edit the list to add Grok: Double-click the relevant preference (often a string or JSON-like list of providers). Add an entry for Grok. A common working format people use (based on community reports from 2025) is something like appending:text{"name":"Grok","url":"https://grok.x.ai/","icon":"https://grok.x.ai/favicon.ico"}Or for the X-integrated version:text{"name":"Grok","url":"https://x.com/grok","icon":"https://abs.twimg.com/favicons/twitter.ico"} If it's a comma-separated or array-style list, insert it accordingly (e.g., add a comma before your new entry if needed). Save the change by clicking away or pressing Enter. Enable/refresh the sidebar: Open the sidebar (Ctrl+B or View > Sidebar > AI Chatbot, or click the sidebar icon if visible). If the AI chatbot panel isn't showing, go to sidebar settings (gear icon in the sidebar) and ensure "AI Chatbot" is enabled. Restart Firefox or reload the sidebar. Grok should now appear in the dropdown list of available chatbots.