Long-Running Codex Tasks Need a Runtime, Not a Longer Prompt
How to design Codex work that can run unattended, recover safely, and return evidence instead of an unfinished transcript.
Tag
agent reliability
Essays
The Harness Is the Product
A production coding agent is the model plus everything that makes its work bounded, repeatable, testable, and safe.
Verification Is the Real Agent Loop
A practical validation stack for coding agents, from cheap deterministic checks to behavioral tests, graders, and human review.