Vigil

Vigil protects your privacy when using AI chatbots. It runs entirely in your browser and scans your prompts in real-time, detecting sensitive data before it gets submitted — so you never accidentally share private information with AI services. WHAT IT DETECTS: • Email addresses • Passwords and secret assignments • Credit card numbers • Social Security Numbers • API keys • JWT tokens • Database connection strings with credentials • Private key material • Crypto seed phrases • Phone numbers HOW IT WORKS: • Scans prompt text as you type on supported AI sites • Highlights detected sensitive data directly in the prompt preview • Shows an in-page warning alert when sensitive data is found • Tracks daily detection count and calculates a privacy risk score CUSTOMIZABLE: • 16 built-in detection rules — disable any you don't need • Add your own custom regex rules for company-specific patterns • Pause protection with a countdown timer when needed PRIVACY FIRST: • All processing happens locally in your browser • No data is ever sent to external servers • No analytics, tracking, or telemetry • Minimal permissions — only storage and active tab access SUPPORTED SITES: • ChatGPT (chatgpt.com) • Google Gemini (gemini.google.com) Vigil is open source and free to use. Your data stays on your device — always.