Menlo Ventures partner Deedy Das releases a Three.js 3D glacial valley built entirely via a Claude 5 Fable self-screenshotting loop

@deedydas screenshotted its own work and iterated?

I'm behind, care to share the setup

Without prompting, it tries to self-verify its work like this which I found pretty interesting. Looks at the screenshots, verifies things aren't wonky, writes tests and then gives you a final result.

The one-shotting experience is far better. Before, even with Opus 4.8, you would have to tell it to do this

@VictorTaelin @deedydas not sure his setup but fable might have decided to do it itself, it did something similar with simon https://simonwillison.net/2026/Jun/11/fable-is-relentlessly-proactive/