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

Hacker News Sunday 07 June 2026, 07:35 UTC By le_chuck 1 min read
Key Points

A Self-Hostable Wasm Sandbox for JavaScript Workers Ever wanted to run a Cloudflare Workers-style handler, on a VPS or anywhere, without Node.js, Bun, or even Docker? Kyushu is an open source CLI that lets you write a JavaScript or TypeScript handler, build it into a self-contained WebAssembly binary, and run it anywhere with one command - kyu . No Node, Bun, or Docker - just a single binary - Cloudflare Workers-style API - familiar fetch handler - Self-hostable - runs on a VPS or anywhere -...

A Self-Hostable Wasm Sandbox for JavaScript Workers Ever wanted to run a Cloudflare Workers-style handler, on a VPS or anywhere, without Node.js, Bun, or even Docker? What is Kyushu? Kyushu is an open source CLI that lets you write a JavaScript or TypeScript handler, build it into a self-contained WebAssembly binary, and run it anywhere with one command - kyu . - No Node, Bun, or Docker - just a single binary - Cloudflare Workers-style API - familiar fetch handler - Self-hostable - runs on a VPS or anywhere - WebAssembly sandbox - isolated from the host
Kyushu (LOCATION) WASM sandbox (ORG) Self-Hostable Wasm Sandbox (ORG) Cloudflare Workers (ORG) VPS (ORG) Node.js, Bun (ORG) Docker (PERSON) CLI (ORG) WebAssembly (ORG) API (ORG)
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