I evaluated the leaked system prompts of the biggest AI coding tools. Here's what I found.

There's a GitHub repository with the full system prompts of Cursor, Windsurf, Lovable, Bolt, and v0 — all leaked or extracted from production. I ran every single one through PromptEval, a tool I built to evaluate prompt quality across 4 dimensions: clarity, specificity, structure, and robustness. He