Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of ERION AI

ERION AI by METADATA

Autonomous AI browsing agent that understands, research, and plans.

Some features may require paymentSome features may require payment
0 (0 reviews)0 (0 reviews)
No UsersNo Users
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
ERION AI is an autonomous sidebar agent designed to transform how you interact with the web. Powered by multimodal engines, ERION doesn't just summarize pages—it understands, researches, and acts on your behalf. Whether you're a developer, researcher, or power user, ERION AI brings professional-grade automation directly into your browser.

🚀 Key Features

*   Autonomous Agent Capabilities:
Delegate complex tasks. ERION can read, plan, and propose actions across the web, from fixing code to drafting multi-step research reports.

*  Background execution:
You can assign task and close the sidebar to keep browsing, ERION AI continues to run in the background. When it finishes or needs your approval for a proposal, it will send a browser notification to bring you back.

*  Dark Reader — Turn websites into a comfortable dark theme for a smoother browsing experience, especially at night.

*  Code Test Studio:
Preview and test code in a safe environment before applying them to your project. Verify that everything works as expected before using the updated code.

*   Smart Vision (✨):
Go beyond text. Use visual intelligence to analyze page layouts, identify UI bugs, or extract data from complex visual elements.

*   Research Workspaces & AI Memory:
Save your findings, organize research notes, and let ERION remember key context across sessions for a truly personalized experience.
  • Blogging Mode
    Transform into a pro content creator with the new Blogging Mode. Designed specifically for bloggers, this mode provides a dedicated, distraction-free environment for professional research and writing.
  • Screenshots
    ERION AI can now "see" what you are looking at with the new Integrated Screenshot capability. Simply ask the AI to "Take a screenshot of this" or "Analyze this page visually."

*   AI Command Palette:
Press "/" to instantly access powerful tools like "/summarize", "/fix", "/tabs", and "/vision" without leaving your keyboard.
*   Intelligent Tab Management: Group, analyze, and compare multiple open tabs at once. ERION helps you stay organized in a sea of information.

*   Smart Assistant & Form Filling:
Automatically detect forms and let AI help you fill them out accurately and efficiently.

*   Secure App Connectors:
Safely connect your GitHub, Supabase, and Gmail accounts. Or assign ERION AI to work on your behalf using your active tab to "Read & write" directly from the sidebar (requires user approval).

*   Multimodal Engines:
Switch between Flash (Speed), Spark (Vision), and Go (Power) to match the AI's "brain" to your specific task.

🛡 Privacy & Security

*   No Account Required: Start using ERION immediately with anonymous device fingerprinting. Your identity remains yours.
*   Local-First History: Your chat history is stored locally in your browser, not on our servers.
*   Explicit Approval Controls: ERION will never commit code or send an email without your explicit review and confirmation via the "Proposal & Confirmation" UI.
*   Privacy Proxy: All communications are routed through a secure privacy proxy to protect your IP and metadata.

🛠 How to Use

1.  Open the Sidebar: Click the ERION icon or use the shortcut to reveal your agent.
2.  Ask or Assign: Type a question to chat, or assign a task like "Summarize this page" or "Fix the CSS on this site."
3.  Command the Web: Use the / key to trigger specialized commands for research, tab management, and more.
4.  Connect & Automate: Plug in your favorite apps via the Connectors menu to unlock cross-platform automation.

ERION AI is a product of METADATA, Inc. Built for the future of the autonomous web.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Optional permissions:

  • Access your data for erion-ai.vercel.app

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support Email
  • Copy add-on ID
Version
2.1.8
Size
424.64 KB
Last updated
2 days ago (Aug 18, 2026)
Related Categories
  • Web Development
  • Search Tools
  • Social & Communication
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.