Claude Design Brief

Naming exception: This skill's name starts with claude- — a prefix Anthropic reserves for first-party skills. Kept deliberately: the skill targets Claude Design specifically, and a name that doesn't say "claude" would be less discoverable. Per skills/meta/skill-writer/references/frontmatter-spec.md, skill-review WARNs but does not FAIL on this pattern when the skill genuinely targets the corresponding Anthropic product.

Produce paste-ready prompts for Claude Design (the artifact/design-canvas tool at claude.ai) that are vivid and project-specific enough that Claude Design has nothing left to ask — it opens its canvas and starts drawing on the first message.

The failure mode the skill exists to prevent: a prompt so vague that Claude Design interrogates scope, tone, palette, typography, hero, device, and a dozen other decisions one at a time. The fix is not to answer those questions in a labeled numbered list — it's to write a design brief dense enough with committed, specific opinion that the questions never arise. How you structure that brief should fit the project, not a template.

Announce at start: "Using claude-design-brief to write a paste-ready Claude Design prompt for [project]."

Sibling vs Mode Selection

This skill is the sibling of ui-brief (which targets Claude Code / production builds, not the Claude Design canvas). It runs in either with-brief mode (a UI-CHALLENGE.md already exists — translate it) or standalone mode (research → Claude Design directly). See references/usage-modes.md for the full comparison table, hallmarks of each mode, what they share, and how the greenfield/rebuild axis layers on top.

Coverage Guide — What Needs To Be In The Brief

These are the decisions Claude Design is likely to lack if you don't address them. Cover each one in whatever form fits the project — as prose, per-direction blocks, embedded in the opening framing, or wherever it lands most naturally. They do not need to be labeled or in any fixed order. The test is not "did I address all 12 categories by name" — it is "does this brief leave Claude Design nothing to ask."