Prompt Guard
Stop API keys, passwords, card numbers and customer data from being pasted or sent to ChatGPT, Claude and Gemini — checked on your device.
Coming soon to the Chrome Web Store
Made for: Developers, support and ops teams, and anyone at work who pastes logs, configs or customer emails into AI chats.
Free
- Works on ChatGPT, Claude and Gemini
- Detects API keys and tokens, private keys, passwords, card numbers, SSNs and IBANs
- Warns before paste and before send, with a masked preview
Pro $29/year (save 39%) or $3.99/month · 7-day free trial
- Custom keyword and regex lists
- Auto-redact instead of block
- 8 more AI sites (Copilot, Perplexity, DeepSeek and more)
- Local audit log with CSV export
- Team policy file import/export
🔒 Checks your messages inside your browser. Never stores or sends what you type, and never reads password or card fields. Privacy policy
📘 Guide: How to avoid pasting API keys and passwords into ChatGPT, Claude or Gemini