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Agent-browser-shield

Secrets & Credentials

A Chromium extension that strips non‑essential UI, masks PII/credentials, and blocks prompt‑injection payloads to make browser‑based AI agents more token‑efficient, secure, and accurate

Track releases GitHub
TypeScript Latest v2026.6.3.17 · 11h ago Security brief →

Features

  • Strip page chrome (footers, cookie banners, chat widgets) for token efficiency
  • Mask PII and credentials before they reach the model
  • Suppress hidden text, HTML comments, and user‑generated content to prevent prompt injection
  • Block manipulative dark patterns and engagement rails that could distract agents

Recent releases

View all 16 releases →
No immediate action
v2026.6.3.16 New feature

schema‑trust‑sanitize rule

Open
No immediate action
v2026.6.3.15 New feature

New lint and sanitization rules

Open
No immediate action
v2026.6.2.13 Breaking risk

Two‑column product layout

Open
No immediate action
v2026.6.2.12 Bug fix

oklch-button removal fix

Open
No immediate action
v2026.6.2.11 Breaking risk

Default disable on-page options

Open

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About

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Forks
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Languages
TypeScript Python JavaScript
View on GitHub Live demo Documentation

Install & Platforms

Install via
binary shell-script
Platforms
linux macos windows

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Beta — feedback welcome: [email protected]