Vercel Open-Sources fx, an Ultra-Lightweight Coding Agent

Vercel Labs open-sourced fx, a Zig-based CLI coding agent with 10 microsecond cold start and a 6MB binary. Version 0.0.5 shrinks it to 6.13MB and adds Grok and Codex subscription support along with project-level local skills.

2026-08-21 ~ 2026-08-22 · 3 related posts

• CLI coding agent fx update: 6MB binary, WASM support, instant startup — evilrabbit_ · 2026-08-21
• Vercel open-sources fx, a blazing fast native coding agent — evilrabbit_ · 2026-08-21
• Tiny coding agent fx adds Grok and Codex support — evilrabbit_ · 2026-08-22