What Happens When a Worm Drives Claude?

A few weeks ago I was on the couch with my eight-year-old, and she was going on about worms. Kids ask the kind of questions we forget to ask as adults, the ones that drop off once we get all mature and sensible. That conversation is the reason a worm ended up driving Claude. Right now everyone builds LLM agents the same way. Take a model, bolt more tools onto it, hand it a bigger toolbox. I wanted to try the opposite. Leave the model alone, and put a brain inside the loop to do the steering. I'll say this up front: it's a fun project, not a serious one. But the thing it does is genuinely strange, so it's worth a watch. (Can't see the embed? Watch it on YouTube.) All the code is on GitHub if you'd rather pull it apart yourself. The setup is a car Think of it as a car. Claude (Sonnet 4) is the engine. A big engine with nobody at the wheel. It has five tools: read, grep, write, bash, and run the tests. That's the lot. The driver is a small controller program. Every tick it looks at what…