Catch secrets before they hit an AI chat box.
ChatShield is a browser extension that warns you the instant you try to paste an API key, token, password, or private key into ChatGPT, Claude, or any AI tool. Detection runs 100% on your device.
Private by design. Your clipboard never leaves your browser. No servers, no analytics, no tracking.
One job, done well
Developers paste code, logs, and config into AI tools dozens of times a day. It is far too easy to leak a secret in the process. ChatShield is the safety net for that exact moment.
Detects real secrets
AWS keys, GitHub tokens, OpenAI and Anthropic keys, Stripe keys, Google API keys, Slack tokens, JWTs, private-key blocks, and a smart catch-all for unknown formats.
100% local
All scanning happens inside your browser. The text you paste is never transmitted, logged, or stored anywhere. Nothing to trust us with.
Never in your way
A small warning panel, not a wall. One click to redact the secret, one click to paste anyway. Tune which detectors run from the settings page.
Simple pricing
Start free. Upgrade once if you want protection everywhere. No subscription.
- ✓ Full protection on ChatGPT and Claude
- ✓ Every detection pattern included
- ✓ Per-site and per-detector controls
- ✓ 100% local, forever
- ✓ Everything in Free
- ✓ Protection on every website, not just AI chats
- ✓ Gemini, Copilot, Perplexity, GitHub, Notion, email, anywhere you paste
- ✓ One-time purchase, yours forever
How to get it
Install ChatShield free from the Chrome Web Store. It starts protecting ChatGPT and Claude right away.
Paste as normal. If something looks like a secret, ChatShield shows a quick warning so you can redact it or continue.
Want protection on every site? Upgrade to Pro ($19, one-time) from the extension's settings page.
Refund policy
We want you to be happy with ChatShield Pro. If it is not right for you, email us within 14 days of your purchase and we will refund you in full, no questions asked. Refunds are issued to your original payment method.
Because ChatShield is a one-time purchase (not a subscription), there is nothing to cancel and you will never be billed again.