HeimWall catches leaked secrets, credentials, and PII the moment they're about to reach AI coding assistants like Cursor, Claude Code, and Copilot, without blocking your workflow or uploading your prompts.
It's a lightweight macOS app that runs entirely on-device: 47 hand-written detection rules flag leaks in real time, in milliseconds. Your prompts never leave your Mac. No content stored, no account, no signup.
Free for individual engineers. Built so you stop pasting live API keys into AI tools without changing how you work.
Next up: a team dashboard that shows security leads leak trends across the org without ever exposing what anyone actually typed. Managers see signal, not content. We're onboarding design partners now, come say hi in the comments
