Frontend Design
The interface design skill Anthropic publishes in its official skills repository, under the Apache 2.0 licence. Before any code, it has the agent lay down a small token system (four to six named colours, typefaces and their roles, a layout sketched in ASCII) and check it against the brief. It grounds aesthetic choices in the product's subject, industry and vocabulary, and names the tells of generated interfaces: warm cream with terracotta accents, near-black with acid-green accents, identical rounded SaaS cards, all-caps labels, middle dots and arrows tacked on everywhere.
Strengths
- Official and readable before you install: a single instruction file and its Apache 2.0 licence in Anthropic's repository
- Gets colour, type and layout choices written down before code, so you fix a palette rather than a whole page
- Names the visual tells to avoid instead of talking about taste in general
Limitations
- Guidance, not tooling: no style base to query, no rework commands on existing output
- The agent reads the guidance and can drift from it: nothing in the skill checks the final output
Best for
- A first front-end project with Claude Code, before stacking community skills
- A brief with no visual direction: it forces a subject, an audience and a primary job before any drawing
- Judging a design skill sold as "better than frontend-design" while knowing what the reference really does