HeimWall
Signal, not surveillance. See how your engineers use Cursor, Claude Code, and Copilot: catch leaked secrets, PII, and confidential data, without blocking them or reading their prompts.
HeimWall launched on July 19, 2026 with 34 votes, #681 of 24,623 launches that month and more than 95% of that year's launches.
What it does
HeimWall catches leaked secrets, credentials, and PII the moment they're about to reach AI coding assistants like Cursor, Claude Code, and Copilot. A lightweight macOS app, fully on-device: 47 hand-written rules flag leaks in real time. Your prompts never leave your Mac. No content stored, no account, no signup. Free for individual engineers. Next up: a team dashboard showing security leads leak trends without exposing what anyone typed. Signal, not content. Design partners welcome.
HeimWall is a macOS app. It reads what your engineers type into Cursor, Claude Code, Copilot and ChatGPT Desktop, masks secrets and PII on the laptop before anything is recorded, and writes a tamper-evident log your team can audit. The prompt still goes where the engineer sent it. We detect and warn. We do not sit in the send path. Cursor, Claude Code, Copilot and Windsurf became the default stack in under 24 months. Nobody sees what goes into the prompt: not the engineer in the moment, and not the leader accountable for the whole team. HeimWall gives you that visibility on-device. Managers see categories and counts, never the text. Engineers paste API keys, customer records and proprietary…from heimwall.ai
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