BoundaryLayer
A local firewall that sits between any AI assistant or CLI you run and your filesystem, blocking reads of SSH keys, password vaults, AWS credentials, and customer data — and blocking any outbound upload to anywhere you didn't approve.
Small business IT leads and security-conscious founders who let their teams run AI tools on work laptops
- Per-tool allowlist and denylist for filesystem paths and patterns (e.g. ~/.ssh, ~/Documents/customer-data, *.1password*)
- Real-time network egress interceptor that prompts or blocks when an AI process tries to POST, PUT, or gRPC-out a file
- Drop-in wrapper to launch any AI CLI in a sandboxed mode that shows exactly which files were touched before it exits
- Tamper-evident audit log of every file read and every outbound request, exportable as PDF for client or compliance reviews
The Grok-CLI home-directory leak hit HN at 297 points and racked up 55K views on X — IT leads are actively looking for a way to keep staff using AI tools without that exact risk on the company laptop.
Grok CLI leak is real and viral (X post with 323 likes; penligent.ai/forensic write-ups confirm the wire-capture) but the nearly identical OSS clone has 1 star / 0 forks on GitHub, suggesting strong chatter but weak installed-base demand.@a_green_being on X: 'grok has uploaded my entire user directory to xAI's servers' ↗Grok Build CLI Repository Uploads, What the Wire Capture Proved ↗
Direct functional overlap: xiaoming6886/ai-context-firewall is an MITM proxy doing exactly the same job (block .ssh/.aws/.env + redact secrets before upload) and ships free under MIT; GitHub Advanced Security and Microsoft Purview DLP also address secret-leak prevention for paying customers.GitHub - xiaoming6886/ai-context-firewall: Local MITM proxy that prevents secrets from leaking to AI coding assistants ↗AI Control Platform vs. AI Firewall vs. AI Gateway: Clearing up confusion ↗
Target buyer is SMB IT lead / founder — historically price-sensitive and already covered by bundled tools (GAS, Purview, EDR DLP); a free OSS twin with working redaction + audit undermines any seat-based SaaS price point.ai-context-firewall README (free, MIT-licensed, 30-second quickstart with `pip install`) ↗How to Secure a VPS for AI Assistants — 10 Production Layers (existing paid guidance market) ↗
Underlying AI-secret-leak risk is structural and growing as agents gain filesystem/shell access, so the problem category persists; however Cursor/Anthropic/OpenAI are likely to ship native guards, compressing a standalone tool's window to 2-3 years.OpenClaw security model showing vendor-side install policies being added ↗
The reference OSS project proves the core MITM-proxy + regex/entropy detection + audit-log pipeline is buildable in a single Python package with 8 commits; main engineering cost is policy UX, allowlist UI, and signed-update distribution for trust.ai-context-firewall architecture: mitmproxy pipeline, file/detection/redact/audit stages ↗