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
About HeimWall
HeimWall is a development product listed on Uneed, available for free. It's tagged with AI, Security. See the best AI products for related options.
Frequently asked questions about HeimWall
What is HeimWall?
HeimWall is catch secrets before they leak into Cursor & Claude.
Is HeimWall free?
Yes, HeimWall is free to use.
What are alternatives to HeimWall?
Discover similar ai, security, development products in the Uneed directory.
What category does HeimWall belong to?
HeimWall is listed under Development on Uneed.
What users say about HeimWall
Omri
The on-device approach here is smart - most devs are copy-pasting raw API keys and database passwords into Claude/Copilot without thinking about it, and it's happening thousands of times a day. The fact that you catch this in milliseconds without uploading the prompts is the privacy+security win that's been missing. Hand-written detection rules instead of ML is interesting too - that probably means way less false positives than neural approaches would give you.For the team dashboard roadmap, the "show signal not content" angle is exactly right for security leads. One question: how does this scale beyond Cursor/Claude/Copilot? What happens when someone uses Aider with Claude, or when custom LLM integrations start proliferating? And are there enterprise deployment options for teams that can't use the cloud dashboard?
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