Introducing Better Harness in Qoder
Today's coding agents can read requirements, modify code, run tests, and even submit pull requests. But being able to do many things is not the same as being able to do them well.
An agent usually cycles through understanding the task, taking action, checking the result, and adjusting its next step. That is the Agent Loop. A reliable loop does more than keep the agent moving: it gives the agent a clear goal, defines what it must not touch, explains how to judge the result, and provides a recovery path when something fails. Without those boundaries, an agent may change a great deal of code and run many tests while still being unable to prove that the task is actually complete.
This is the problem that Loop Engineering and Harness Engineering address. They equip the agent with project context, relevant development tools, effective verification methods, and explicit safety boundaries so that every loop moves closer to a reliable delivery.
Building on Qoder's internal experience and the broader community's work on coding agents, agent loops, and software engineering, we introduced Better Harness (Beta).