# Sentry AI: Be Fearless Online

> The next-generation browser privacy shield and anti-AI data defense engineered natively for Manifest V3. Blocks 120,000+ trackers with 0ms latency, cloaks GPU and canvas fingerprints with mathematical noise, auto-declines cookie popups, and prevents tech giants from harvesting browsing data to train generative models.

## Core Capabilities

- [Anti-Fingerprinting Core](https://sentry.arklabai.com#defenses): Injects deterministic Mulberry32 PRNG noise into Canvas 2D and WebGL readbacks to prevent device profiling without breaking CAPTCHAs or image editors.
- [Declarative Traffic Filtering](https://sentry.arklabai.com#defenses): 120,000+ rules compiled directly into the browser's native C++ declarativeNetRequest pipeline with 0ms latency and 0 battery drain.
- [Universal Cookie Guard](https://sentry.arklabai.com#defenses): Automatically detects OneTrust, Cookiebot, Didomi, Complianz and TrustArc CMPs, auto-declines non-essential cookies, and unfreezes page scroll locks.
- [ClearURLs Link Sanitizer](https://sentry.arklabai.com#cleaner): In-flight stripping of 50+ tracking parameters (`utm_*`, `fbclid`, `gclid`, `mc_eid`) and redirect unmasking.
- [Commercial Anti-AI Training Defense](https://sentry.arklabai.com#defenses): Injects `Sec-GPC: 1` and `X-Robots-Tag: noai, noimageai` headers; blocks Meta, TikTok, and commercial scraper telemetry.
- [Persistent Element Zapper](https://sentry.arklabai.com#zapper): Point-and-click cosmetic element destruction that permanently hides elements across visits using `chrome.storage.local`.
- [Zero-Telemetry Local Architecture](https://sentry.arklabai.com#comparison): 100% client-side execution; 0 bytes sent to external servers; PBKDF2 and AES-256-GCM client data vault.

## Supported Browsers

- [Google Chrome](https://sentry.arklabai.com/downloads/sentry-ai-v1.0.0.zip): Manifest V3 native package
- [Brave Browser](https://sentry.arklabai.com/downloads/sentry-ai-v1.0.0.zip): Chromium core with shield synergy
- [Mozilla Firefox](https://addons.mozilla.org/en-GB/firefox/addon/sentry-ai-be-fearless-online/): Official Firefox Add-ons (AMO) store listing and [direct package](https://sentry.arklabai.com/downloads/sentry-ai-firefox-v1.0.0.zip)
- [Microsoft Edge](https://sentry.arklabai.com/downloads/sentry-ai-v1.0.0.zip): Edge-optimized MV3 package
- [Arc Browser](https://sentry.arklabai.com/downloads/sentry-ai-v1.0.0.zip): Chromium sidebar integration

## Tool Comparisons

- [uBlock Origin vs Sentry AI](https://sentry.arklabai.com/compare/ublock-origin-vs-sentry-ai): Native Manifest V3 DeclarativeNetRequest C++ filtering vs deprecated MV2 webRequest.
- [AdGuard vs Sentry AI](https://sentry.arklabai.com/compare/adguard-vs-sentry-ai): 100% Free in-browser Manifest V3 execution vs $30-$80/year desktop apps with local root CA certificate interception.
- [uBlock Origin Lite vs Sentry AI](https://sentry.arklabai.com/compare/ublock-origin-lite-vs-sentry-ai): Maximum 120,000+ rule strength by default with anti-AI and hardware cloaking vs basic mode sliders.
- [Brave Shields vs Sentry AI](https://sentry.arklabai.com/compare/brave-shields-vs-sentry-ai): Universal compatibility across Chrome, Brave, Firefox, Edge, and Arc with deterministic PRNG vs browser lock-in and farbling breakage.
- [Total Adblock vs Sentry AI](https://sentry.arklabai.com/compare/total-adblock-vs-sentry-ai): 100% Free and open-source forever vs $99-$119/year renewal traps and upsell popups.
- [Surfshark CleanWeb vs Sentry AI](https://sentry.arklabai.com/compare/surfshark-cleanweb-vs-sentry-ai): Standalone in-browser shield with cosmetic ad collapse vs $48-$70/year VPN subscription and blank ad boxes.
- [Ghostery vs Sentry AI](https://sentry.arklabai.com/compare/ghostery-vs-sentry-ai): Strict zero-telemetry architecture vs opt-in Human Web data collection and paid monthly tiers.
- [Privacy Badger vs Sentry AI](https://sentry.arklabai.com/compare/privacy-badger-vs-sentry-ai): Complete ad blocking, commercial anti-AI defense, and PRNG hardware cloaking vs tracker-only heuristic detection.
- [Pi-hole vs Sentry AI](https://sentry.arklabai.com/compare/pi-hole-vs-sentry-ai): Zero-hardware in-browser defense with YouTube ad blocking and cosmetic frame collapsing vs LAN-locked DNS sinkholes.
- [NextDNS vs Sentry AI](https://sentry.arklabai.com/compare/nextdns-vs-sentry-ai): Unlimited local in-browser defense with cosmetic collapsing and anti-AI protection vs 300k query monthly limits.
- [Adblock Plus vs Sentry AI](https://sentry.arklabai.com/compare/adblock-plus-vs-sentry-ai): Pure zero-whitelist user-first defense vs Acceptable Ads corporate pay-to-track monetization.
- [CanvasBlocker vs Sentry AI](https://sentry.arklabai.com/compare/canvas-blocker-vs-sentry-ai): Deterministic Mulberry32 PRNG noise injection vs static dummy zeros; zero site or CAPTCHA breakage.
- [Incogni vs Sentry AI](https://sentry.arklabai.com/compare/incogni-vs-sentry-ai): 100% Free local zero-knowledge AES-256 remediation vault vs $150/year cloud subscription.
- [DeleteMe vs Sentry AI](https://sentry.arklabai.com/compare/deleteme-vs-sentry-ai): Free open-source local browser armor vs $129-$229/year centralized cloud data broker service.
- [Aura vs Sentry AI](https://sentry.arklabai.com/compare/aura-vs-sentry-ai): Zero-knowledge local defense vs $144-$300/year cloud identity suite requiring SSN storage.
- [Mozilla Monitor vs Sentry AI](https://sentry.arklabai.com/compare/mozilla-monitor-vs-sentry-ai): Independent open-source privacy vs $107.88/year outsourced data broker removal.
- [Optery vs Sentry AI](https://sentry.arklabai.com/compare/optery-vs-sentry-ai): Active in-browser prevention at source vs $49-$249/year removal screenshots.
- [EasyOptOuts vs Sentry AI](https://sentry.arklabai.com/compare/easyoptouts-vs-sentry-ai): Real-time network and canvas armor vs $19.99/year automated opt-out scripts.
- [Kanary vs Sentry AI](https://sentry.arklabai.com/compare/kanary-vs-sentry-ai): Free local zero-knowledge vault vs $179.88/year cloud deletion subscription.
- [Privacy Bee vs Sentry AI](https://sentry.arklabai.com/compare/privacy-bee-vs-sentry-ai): Free open-source browser defense vs $197/year corporate database scrubbing.
- [Onerep vs Sentry AI](https://sentry.arklabai.com/compare/onerep-vs-sentry-ai): Transparent client-side privacy vs $99.96-$180/year cloud automated removal.
- [All Tool Comparisons](https://sentry.arklabai.com/compare): Full architectural breakdown index of all 21 comparisons.

## Legal & Compliance

- [Privacy Policy](https://sentry.arklabai.com/privacy): 100% Zero-telemetry guarantee, client-side AES-256 vault, and zero remote logging policy.
- [Terms of Service](https://sentry.arklabai.com/terms): MIT Open-Source software freedoms and non-custodial usage terms.

## Technical Documentation & Architecture

- [Why Sentry AI Architecture](https://github.com/arklabai/sentry/blob/main/docs/WHY-SENTRY.md): The boundary between the browser engine and Sentry AI security rules.
- [Feature Comparison Analysis](https://github.com/arklabai/sentry/blob/main/docs/FEATURE-ANALYSIS.md): Deep-dive comparison against uBlock Origin and CanvasBlocker.
- [Chrome Extension PRD](https://github.com/arklabai/sentry/blob/main/docs/SENTRY-CHROME-EXTENSION-PRD.md): Product requirements and technical specifications.
- [Website PRD](https://github.com/arklabai/sentry/blob/main/docs/WEBSITE-PRD.md): Website and landing page product specification.
- [Fingerprinting & Device Audit](https://github.com/arklabai/sentry/blob/main/docs/mydeviceinfo.md): Hardware entropy audit and hardened V8 cloaking implementation.
- [MyDevice-Info Diagnostic Tool](https://sentry.arklabai.com/mydevice-info): Live client-side browser fingerprint and hardware exposure inspector with real-time Sentry AI cloaking simulation.
- [GitHub Repository](https://github.com/arklabai/sentry): Official open-source repository.

## Optional & Full Documentation

- [Full LLM Context](https://sentry.arklabai.com/llms-full.txt): Complete, concatenated technical reference for LLMs.