GoKawiilv0.0.3 · 6.39mib · status: experimental (i) use at your own risk, we will be making frequent changes
This demo is available in browsers with WebAssembly JSPI support, like Safari 27+ and Chrome.
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 .
fx is a coding agent harness and CLI written in Zig, optimized for research and embeddability as part of larger systems.
It focuses on minimalism and performance across the board, from system prompt design, to its tools, feature set, and 6.39mib binary.
For end users, its CLI output style and form factor aims to be closer to a Unix shell than a heavy "IDE in the terminal" TUI.
It's open source (Apache-2.0), model-agnostic, and suitable for both local and cloud inference.