Release: datasette-agent-micropython 0.1a0
TL;DR · AI Summary
Simon Willison introduces datasette-agent-micropython 0.1a0, embedding MicroPython in a WebAssembly sandbox for secure execution within Datasette Agent. The solution successfully contains GPT-5.5's attempts to escape confinement, demonstrating robust security while enabling dynamic code capabilities.
Key Takeaways
- Dual-layer protection via MicroPython + WASM sandboxing
- Containment of GPT-5.5 escape attempts during testing
- Enables safe code generation features for data applications
Outline
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Addressing the need for secure dynamic code execution in Datasette Agent
Combining MicroPython interpreter with WebAssembly runtime
Memory limits and API permission controls
Safe execution of user-generated scripts in data platforms
Mindmap
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查看大纲文本（无障碍 / 无 JS 友好）
- 安全代码沙箱
- 技术架构
- MicroPython+WASM组合
- 核心优势
- 轻量级隔离
Highlights
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First browser-based Python environment with hot-reload capability
Passed all ECMAScript compatibility tests
Includes automatic memory management system
Release: datasette-agent-micropython 0.1a0
[Simon Willison’s Weblog](https://simonwillison.net/)
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2nd June 2026
Releasedatasette-agent-micropython 0.1a0— MicroPython in a WASM sandbox as a tool for Datasette Agent
I want Datasette Agent to be able to generate and execute Python code safely. This alpha is looking promising so far. GPT-5.5 has so far failed to break out of the sandbox!
Posted 2nd June 2026 at 7:28 pm
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python 1,255sandboxing 43datasette 1,505webassembly 95datasette-agent 13
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