Author here. I built this in a few hours after the Claude Code leak.

I've been working on my own coding agent setup for a while. I mostly use pi [0] because it's minimal and easy to extend. When the leak happened, I wanted to study how Anthropic structured things: the tool system, how the agent loop flows, A 500K line codebase is a lot to navigate, so I mapped it visually to give myself a quick reference I could come back to while adapting ideas into my own harness and workflow.

I'm actively updating the site based on feedback from this thread. If anything looks off, or you find something I missed, lmk.

[0] https://pi.dev/