Show HN: Kyushu – A self-hostable WASM sandbox for JavaScript workers

Category: infrastructure

Tags: webassembly, sandbox, serverless, javascript, rust, cli-tool

Score: 6.5/10 (Innovation: 6, Technical: 7, Documentation: 7, Utility: 6)

Kyushu is a self-hostable WebAssembly sandbox that lets you run JavaScript workers (similar to Cloudflare Workers) without Node.js or Docker, using a Rust-based runner and QuickJS embedded in WASM. It is interesting for its unique approach to lightweight, portable serverless-style execution and potential use in safe AI agent environments.

Target audience: backend devs, devops, infrastructure engineers

Repository: https://kyushu.dev/ · JavaScript · 5 stars

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