Show HN: Bx – macOS native sandbox for AI and coding tools
Sandbox any macOS app — only your project directory stays accessible - holtwick/bx-mac
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Wrapper around Apple's macOS sandbox-exec tool, which usually sandboxes native apps. It is "allow-first" i.e. it will not overprotect everything, just crucial information and therefore allows most tools to run without issues. Limiting is done using a .gitignore like file schema. Further TOML config options available.
I built it because Docker sandboxing requires config and planning. Build in sandboxing of AI tools instead is limited to the very tools themselves, instead I wanted to have a simple cage around Claude running inside VSCode. Also needed to protect files inside a folder like .env.local or keys.
Install via: brew install holtwick/tap/bx
Run like: bx claude .
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