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vercel-labs/fx

★ 3,823 stars

Zig

Covered in week 2026-W40 · the 2026-09 report

Unix like coding agent

Trended on 28 Sep 2026 with ★ 3,203 stars; today ★ 3,823 (+620, +19%).

What fx is

fx is a minimal coding agent CLI that still comes with batteries included. It's one native binary written in Zig, so there is no runtime to install, and it runs the same on your laptop, in CI, or inside an agent sandbox. Its output is closer to a Unix shell than an IDE, because the conversation prints into your terminal's scrollback instead of filling the screen.

From the repository README · read it on GitHub →

28 Sep 2026 · 0:21
fx: Vercel Labs' Free Open-Source Claude Code Alternative, in Zig
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