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Ultra-minimal Linux-like sandbox for AI agents: shell, coreutils, VFS, and a Wasmtime-hosted JS runtime in one crate
2 starsRust
Tinysandbox – An ultra-minimal sandbox with QuickJS WASM isolates
by dangoodmanUT·Jul 5, 2026·2 points·0 comments
Post Description
We needed hyper-lightweight sandboxes for massively parallel agent fanout that could be recycled in milliseconds, take only KBs of memory when not actively running a command, and can work with bottomless filesystems.
Tinysandbox is like just-bash, but supports a minimal secure JS runtime via QuickJS WASM, random file IO, VFS checkpoint and restore, and streaming IO for working with large files.
It's designed for super-lightweight agents that don't need full linux, but still need the emergent behavior of shell commands and script writing to complete their task.
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