MD3 skill for Claude Code that keeps components on-spec

What it is. A skill for Claude Code that encodes the Material Design 3 system — 30-plus components, design tokens, theming logic, responsive layout rules, and a compliance audit — so when you ask Claude to build UI, it already knows what MD3 expects.

What it plugs into. Claude Code, Anthropic’s terminal-based coding agent. If that is already in your workflow, the skill slots in alongside it.

Why it helps. MD3 is specific. Tokens have names, elevation has meaning, components have states and behavior that are easy to approximate and easy to get wrong. Asking a general-purpose model to write MD3-compliant code tends to produce something that looks close but drifts on the details. This skill gives Claude a precise reference to work from, and the built-in audit step means it can flag where generated code falls out of spec before you catch it in review.

How to set it up. Pull the repository from GitHub and follow the install instructions to register the skill with Claude Code. The skill then becomes part of Claude’s context when you are working in that environment. From there, you prompt as you normally would — ask for a component, a themed layout, a token update — and Claude pulls from MD3 rules rather than guessing.

Limits. This only matters to you if you are building on Material Design 3 and already using Claude Code. It has no value outside that pairing. The skill reflects MD3 as encoded by its author, so if Google updates the spec, the skill will lag until someone updates the repo. And like any AI-assisted code generation, the output still needs a human eye — the audit helps, but it is a model checking itself.