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 binary size, and its output style aims to be closer to a Unix shell than a heavy terminal IDE. It is model-agnostic and suitable for both local and cloud inference.

WWW: https://fx.sh
