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datasette-agent-micropython 0.1a0

Simon Willison · Simon Willison · 2026-06-02

Simon Willison releases datasette-agent-micropython 0.1a0, an alpha plugin enabling Datasette Agent to safely generate and execute Python code via a MicroPython WebAssembly sandbox that GPT-5.5 has not yet escaped in testing.

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Topics: datasettepython-sandboxingwebassemblyai-code-execution

Claims

  • The datasette-agent-micropython plugin enables Datasette Agent to generate and execute Python code in a sandboxed environment.
  • The sandbox is implemented using MicroPython running via WebAssembly.
  • GPT-5.5 has not yet successfully escaped the sandbox during testing.

Key quotes

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!