Photo
Let's talk about why Cursor's agent harness is so good. There's a misconception that first-party harnesses from the labs will always outperform. For many reasons, that isn't true. There are roughly 6 layers that go into a good agent harness: orchestration, context, routing, transport, state, and execution (tools). Some of those involve careful context engineering, and others look a lot like the traditional craft of building great software. Each of these layers needs to be optimized. And if any …
