Ask AI about the page you're viewing—right in the Firefox sidebar.

Sidekick AI keeps up with the page in your active tab. Ask questions like "Summarize this article" or "What does this page say about X?" without copying and pasting text yourself. Two ways to chat Web mode Embed the official web UIs for ChatGPT, Claude, Gemini, and Microsoft Copilot in the sidebar. Sign in with your existing account—no API key required.

Click Summarize page to copy the current page context to your clipboard
Paste it into the chat input on the service you choose

API mode (advanced) Bring your own API key for OpenAI, Google Gemini, Anthropic, or Groq. - Requests go directly to the provider over HTTPS - Enables the AI to search the live web and provide up-to-date responses - Your key and settings stay on your device - Page title, URL, and extracted body text are included automatically when you send a message Sidekick AI uses a [BYOK] model. Smart page reading

Prefers main content areas (main, article, and similar regions)
Filters navigation, ads, cookie banners, and other noise
Supports open Shadow DOM, same-origin iframes, and slow-loading pages
Skips browser system pages (about:, moz-extension:, etc.)

Webmail support

Excels at webmail analysis: understands the current email, analyzes its intent, and helps you draft replies
Supported services include gmail.com, outlook.com, mail.naver.com, and mail.daum.net

More features

Korean and English interface
Up to 3 recent prompts for quick reuse
Markdown rendering for AI replies
One-click copy for questions and answers

Privacy API keys and preferences are stored locally in Firefox. In API mode, chat data is sent only to the AI provider you choose—not to the extension developer.

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Published Firefox add-on:

Sidekick AI