Bash for Agents. Contribute to vercel-labs/just-bash development by creating an account on GitHub.

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just-bash is a TypeScript library from Vercel Labs that simulates a bash environment with an in-memory virtual filesystem, designed for AI agents needing a secure sandboxed shell. It supports a wide range of Unix commands (file ops, text processing, jq, sqlite3, Python via Pyodide), multiple filesystem backends (InMemoryFs, OverlayFs, ReadWriteFs, MountableFs), optional network access with URL allow-lists, execution protection against infinite loops, AST transform plugins, and a Vercel AI SDK integration via the companion bash-tool package. A CLI binary and interactive shell are also included.

vercel-labs/just-bash: Bash for Agents

<p>Sweet they’ve done it again. Seems like a good route to go with agents. They’re okay at bash, but more they’ll be much better.</p>
<p>Plus you know, sandboxing 👍🏻</p>
