Recently, I was testing different design approaches using Claude Code with an MCP connector across two different projects.
In one project, I used low-fidelity hand-drawn wireframes as input, while in the other I relied mainly on detailed text prompts.
The project where I provided visual wireframes produced significantly better results, as the visual direction helped generate much more structured, accurate, and usable designs compared to prompt-only workflows.
Brand guidelines fail when someone tries to use them. The PDF is complete. But when a developer needs something the system didn't anticipate, there's no logic to extend from. A style guide documents what exists. A system tells you what to do next.