Show HN: Wasi-Python – CPython, NumPy, and Pandas in a WebAssembly Sandbox

Category: security

Tags: webassembly, sandboxing, python, ai-agents, security, numpy

Score: 7.3/10 (Innovation: 6, Technical: 8, Documentation: 8, Utility: 7)

wasi-python packages CPython 3.15 compiled to WebAssembly (wasm32-wasip1) with the scientific stack (NumPy, Pandas, SciPy, scikit-learn) into a pip-installable sandbox for untrusted or agent-generated code. It offers filesystem grants, host tools with gating, resource limits (deadline/fuel/memory/output), sessions, and async execution—a compelling combination for safe AI code execution.

Target audience: AI/ML engineers, backend developers building agent platforms, security-conscious devs running untrusted code

Repository: https://github.com/ClayGendron/wasi-python · Python · Apache-2.0

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