What is Nolex Chrome extension?

Nolex is a free browser tool that scans your pastes and file uploads to AI chatbots for secrets like API keys and DB creds, letting you redact before send—all local, no servers.

Does Nolex work on all AI tools?

Yep, any site using fetch/XHR for uploads/pastes: ChatGPT, Claude, Gemini, Copilot, DeepSeek. Not IDE plugins though.

Is Nolex safe and private?

Fully browser-local with minimal permissions. Open source—check the code. No data leaves your machine.

🔒 Security & Privacy

Nolex: The Browser Extension That Sniffs Out Your AI-Paste Blunders Before It's Too Late

You've done it: pasted code into an AI chatbot, secrets and all. Nolex stops that cold, running scans right in your browser without phoning home.

theAIcatchup Apr 11, 2026 4 min read

Nolex Chrome extension dialog highlighting detected AWS key in code paste to ChatGPT

⚡ Key Takeaways

Nolex scans clipboard and uploads locally, blocking secret leaks to AI platforms without cloud involvement. 𝕏
Uses regex for 30+ patterns covering keys, creds, and personal data; interactive redact UI. 𝕏
Echoes early cloud leak tools; predicts browser-native versions soon after breaches. 𝕏

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theAIcatchup

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#AI secret scanning #Chrome developer tools #Nolex extension #privacy browser extension

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Originally reported by Dev.to

⚡ Key Takeaways

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