fx :Tiny, open, native coding agent.
The article introduces 'fx', a minimalist, open-source coding agent designed for high performance and low resource consumption. It is built using the Zig toolchain and supports WebAssembly, making it suitable for embedded environments and resource-constrained systems.
Why it matters
As AI agents become more prevalent, tools that prioritize efficiency and portability are critical for developers working in constrained environments.
$ curl -fsSL https://fx.sh/setup.sh | bash copied
v0.0.3 · 6.39mib · status: experimental (i) use at your own risk, we will be making frequent changes
This demo runs the full fx CLI as WebAssembly compiled with the Zig toolchain. Networking is delegated to browser fetch , and every SDK aspect is configurable in the docs .
𝒇 x v0.0.3 · Run /help for commands ┃ auto · glm-5.2 (i) This demo is available in browsers with WebAssembly JSPI support, like Safari 27+ and Chrome. This demo runs fx in WebAssembly with a browser workspace powered by just-bash . Install fx for the full tool suite on your own files. fx is a coding agent harness and CLI written in Zig, optimized for research and embeddability as part of larger systems.
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