Agent Harness: why agent behavior needs repeatable tests, not vibes
Agent Harness is based on a simple premise: if agent behavior matters, teams need replayable tests instead of judging workflows by anecdotes.
By Agent Software
Scheduled article
This post is scheduled to publish in full on July 22, 2026. The final URL is already live so social previews, search crawlers, and future readers all resolve to the same article.
Agent systems feel unreliable because most teams still evaluate them with memory, screenshots, and intuition rather than repeatable tests.
- Final publish date: July 22, 2026
- Primary categories: Testing
- Tags: #agent-harness #testing #agent-evals #suite
In the meantime, the related posts below cover the adjacent product and engineering context this article builds on.
