Simon Willison’s Weblog

2nd June 2026

Release micropython-wasm 0.1a1 — Python library for running a MicroPython sandbox using WebAssembly

Fixes for some limitations that emerged while I was trying to use this to build datasette-agent-micropython.

Posted 2nd June 2026 at 7:20 pm

Recent articles

The Pelican comparison grid for Astra is pretty interesting - 4th September 2026
OpenAI's rogue agents were caught communicating via public wikis - 4th September 2026
Claude's new system prompt really doesn't want to reproduce song lyrics - 2nd September 2026

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

python 1,280 sandboxing 55 webassembly 129 micropython 9

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe