Simon Willison’s Weblog

2nd June 2026

Release micropython-wasm 0.1a0 — Python library for running a MicroPython sandbox using WebAssembly

My latest sandboxing experiment: This alpha package bundles a lightly customized WASM build of MicroPython with a wrapper to execute code in it via wasmtime.

Posted 2nd June 2026 at 3:43 am

Recent articles

Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp) - 31st July 2026
OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened - 22nd July 2026
A Fireside Chat with Cat and Thariq from the Claude Code team - 21st July 2026

This is a beat by Simon Willison, posted on 2nd June 2026.

python 1,271 sandboxing 52 webassembly 129 micropython 9

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