Codex Understands Legacy Prototypes and Completes Tools
banteg · x · 2026-07-11
The author shared a very specific experience: they gave Codex a "highly obscure pointer," and it knew exactly what to do. After being handed an old prototype, Codex spent the next few hours expanding it into a more complete and practical tool.
The focus of this post isn't on model parameters, but rather on a coding agent's ability to understand and extend work within a real-world engineering context.
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