fx: A Tiny, 6MB Open-Source Coding Agent Written in Zig

cramforce · x · 2026-08-21

fx is a minimalist, open-source coding agent harness and CLI written in Zig, featuring a tiny 6.39MB binary and 10µs cold start time. It supports model-agnostic local and cloud inference, offers a Unix shell-like experience, and is optimized for resource-constrained environments like e-ink displays, with WebAssembly support available.

Related event: Vercel Open-Sources fx, a Tiny Zig-Based Coding Agent(5 posts)→

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