Building Admin Dashboard Customizations

If you're building custom UI for Medusa's admin dashboard, you'll need this before you touch any code. It covers the full stack of admin customizations: widgets for product and order pages, custom pages, forms, tables, and data loading patterns. The most critical part is the data loading section, which hammers home a pattern that's easy to mess up: always use separate queries for display data versus modal data, and never conditionally load display queries based on UI state. It also includes design system rules like semantic color classes and the surprisingly important detail that Medusa prices aren't stored in cents, so don't divide by 100 when displaying them. The skill explicitly tells you to load reference files before implementing, since the quick reference alone won't cut it.