Mastering Harnesses Like Codex Is the Best Investment for AI Agents

TheZachMueller · x · 2026-08-02

A developer points out that current LLMs (like Codex and Claude) don't naturally understand how to optimally drive their own execution environments (e.g., codex exec or claude -p).

By deeply studying how these harnesses and their default tools actually work, developers can gain significantly more control. This understanding helps build a better vocabulary for prompting, making it much easier to steer the agent toward the desired outcome.

Original post →

More from coding & agent

coding & agent channel →