Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
Log in
Preview of AI Shield

AI Shield by thecomeback

Toolbox for the AI era

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
AI Shield automatically redacting words that match its filters. When you copy the response of the AI, any references to redactions will automatically be unredacted.You can add custom filters to match words more specific to your needs.AI Shield will show all active filters that will be redacted from your prompt when pasting from clipboard.
About this extension
AI chatbots are useful, but everything you paste into them leaves your computer. AI Shield lets you keep using them without handing over your personal data or secrets.

When you paste text into a supported AI chat, AI Shield finds sensitive values and swaps them for harmless placeholders before the AI sees them. When you copy the AI's reply, the placeholders turn back into your original values. You get a useful answer, and the chatbot never sees the real data.

WHAT IT PROTECTS OUT OF THE BOX
- Email addresses and phone numbers
- Names
- Credit card and bank account numbers
- API keys and other secrets
- Passport numbers

Need more? Add your own filters for client names, project codenames, internal IDs or anything else, and switch each filter on or off.

WORKS WITH
AI Shield runs only on the major AI chat websites. It doesn't touch any other site you visit.

SIDE PANEL
Click the toolbar icon to open the side panel. It shows your current prompt with the original values restored, lets you turn auto-redaction on or off, and lets you manage your filters.

PRIVATE BY DESIGN
AI Shield makes no network requests and has no analytics or tracking. Your original values stay in your browser and are deleted when you uninstall the extension.

Free and open source under the GPL-3.0 license.
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:

  • Get data from the clipboard
  • Input data to the clipboard
  • Access your data for sites in the mistral.ai domain
  • Access your data for chat.deepseek.com
  • Access your data for chat.openai.com
  • Access your data for chatgpt.com
  • Access your data for claude.ai
  • Access your data for copilot.microsoft.com
  • Access your data for gemini.google.com
  • Access your data for grok.com
  • Access your data for mistral.ai
  • Access your data for perplexity.ai
  • Access your data for x.com

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Copy add-on ID
Version
0.1.0
Size
143.55 KB
Last updated
11 days ago (Oct 20, 2026)
Related Categories
  • Privacy & Security
License
GNU General Public License v3.0 or later
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • chat
  • privacy
  • security
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.