Why building even a small agent harness changes how you use Claude Code and Codex
omarsar0 · x · 2026-09-04
- Responding to "why build a harness when Claude Code & Codex exist", the author argues that building even a small one changes how you use the big tools.
- Hands-on harness building teaches you what breaks, what the model needs after a failure, and which knobs actually matter.
- That knowledge transfers to every harness you touch, regardless of vendor.
Related event: Build Your Own Minimal Agent Harness to Learn What Matters(2 posts)→
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