Context is king. The problem is that you are the one currently telling Claude how close it is and what to do next. But if you give it the tools to do that itself, it will make a world of difference.

Give Claude a way to iteratively poke at what it created (such as a playwright harness), and screenshot of what you want, and maybe a way to take a screenshot in Playwright and I think you will get much closer. You might even be able to one shot it.

I’ve always wondered what would happen if I gave it a screenshot and told it to iterate until the Playwright screenshot matched the mock screenshot, pixel perfect. I imagine it would go nuts, but after a few hours I think it would likely get it. (Either that or minor font discrepancies and rounding errors would cause it to give up…)

The key is always feedback loop. If you give the AI the ability to verify itself, then it's able to iterate faster. Sure, it may take many iterations, but at least the iteration spans will be shorter than waiting for a human to validate each time.

I'd be curious to see how Antigravity compares for the same task with its automatic browser agentic validation logic.