Claude Code / Codex CLI / etc are all great because they know how to drive Bash and other Linux tools.

The browser is probably the best sandbox we have. Being able to run an agent loop against a WebAssembly Linux would be a very cool trick.

I had a play with v86 a few months ago but didn't quite get to the point where I hooked up the agent to it - here's my WIP: https://tools.simonwillison.net/v86 - it has a text input you can use to send commands to the Linux machine, which is pretty much what you'd need to wire in an agent too.

In that demo try running "cat test.lua" and then "lua test.lua".

For a more open-source version, check out container2wasm (which supports x86_64, riscv64, and AArch64 architectures): https://github.com/container2wasm/container2wasm

From "Show HN: Amla Sandbox – WASM bash shell sandbox for AI agents" (2026) https://news.ycombinator.com/item?id=46825119 :

>>> How to run vscode-container-wasm-gcc-example with c2w, with joelseverin/linux-wasm?

>> linux-wasm is apparently faster than c2w

From "Ghostty compiled to WASM with xterm.js API compatibility" https://news.ycombinator.com/item?id=46118267 :

> From joelseverin/linux-wasm: https://github.com/joelseverin/linux-wasm :

>> Hint: Wasm lacks an MMU, meaning that Linux needs to be built in a NOMMU configuration

From https://news.ycombinator.com/item?id=46229385 :

>> There's a pypi:SystemdUnitParser.