Migrating a Legacy Godot Project to Godot 4.6: A Cloud Migration Challenge

I tested three Godot MCPs by giving Codex the same task: Connect to a Godot 3.6 project and migrate it to Godot 4.6. Simple test. Same project. Same prompt. Different MCPs. One of them was my own MCP, Fennara. The other two were Godot AI and Godot MCP Native. The project started with: 208 errors 73