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Morning Edition · Friday, August 21, 2026Published at 2:31 AM EDT · New York
Vercel Labs Open-Sources a Coding Agent That Fits in a 6.3-Megabyte Binary
Written in Zig and released under Apache 2.0, fx is model-agnostic and built to be embedded inside sandboxes and larger systems rather than used as a terminal application.
Vercel Labs has open-sourced fx, a coding agent harness and command line interface written in Zig, under the Apache 2.0 license. The Russian-language channel AI ML Big Data described it accurately as a 6.3-megabyte binary that began as an i…
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