Brandkit skill

Skill: Brand Kit

Requirements

This skill needs the full UX/UI Agent Skills kit: the gates, the references and the design-system library. Install it with npx ux-ui-agent-skills@3.1.0 init or as the Claude Code plugin. npx skills@1.7.6 add copies the skill folder and nothing else. Installed that way, this skill runs in guidance-only mode: no gate runs, so it gives no verdict.

Step 0: is the kit here? Check once: ls ${CLAUDE_SKILL_DIR}/../../../tokens >/dev/null 2>&1 && echo KIT_OK || echo KIT_MISSING On KIT_MISSING, open your reply with: "Guidance-only mode: the UX/UI Agent Skills kit is not installed here, so no gate ran and nothing below is measured." Then work from this file and general practice, under three rules. Do not guess or cite the contents of a kit file you could not open. State no measured number (no contrast ratio, no N/N, no "passes WCAG"): write "not verified" where one would go. End with a line Skipped (kit not installed): that names every gate script this file tells you to run, then the install command above.

Stand up the foundation (one token system everything renders from) before any screen. Get this right and every page stays consistent and themeable from one place.

Steps

1. Brief Inference (mandatory): name the industry, audience, the one mood adjective, and motion depth (${CLAUDE_SKILL_DIR}/../../../taste/design-taste.md → Brief Inference). Pick an anchoring archetype from ${CLAUDE_SKILL_DIR}/../../../taste/aesthetic-systems.md.
2. Primitives: generate the brand color ramp in OKLCH (11 shades, consistent chroma) + a neutral ramp; verify the 500 shade ≥ 4.5:1 on white (text) and 600 ≥ 3:1 (UI) per ${CLAUDE_SKILL_DIR}/../../../.claude/rules/tokens-and-color.md → Color Generation.
3. Semantic layer: map roles to primitives (action.primary/-hover/destructive, text.{primary,secondary,on-action,link}, surface.{page,card,raised}, border.{default,strong}, feedback.{success,warning,error,info}), and the dark overrides (designed, not inverted).
4. Scales: Major Third type scale + composite text styles, 4px spacing scale, radius tiers, elevation, and ${CLAUDE_SKILL_DIR}/../../../tokens/motion.json-style durations/easings.
5. Emit the DTCG ${CLAUDE_SKILL_DIR}/../../../tokens/*.json (3-tier) + a single theme.css (the one shared source, [data-theme="dark"] overrides). Optionally feed the token-build pipeline (token-build skill) for other platforms.

Verification (definition of done)

• python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_tokens.py: valid JSON, all aliases resolve.
• python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_contrast.py: required text/action/border pairs pass WCAG AA in light AND dark; border.strong ≥ 3:1.
• python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_theme_refs.py: every component var(--…) resolves to the theme.
• One theme, no per-page palettes; destructive = danger token (not primary); zero hardcoded values.

Output is a verified token foundation: the measurable part is provable (run npm run verify). Brand "feel" still benefits from a human review against ${CLAUDE_SKILL_DIR}/../../../taste/design-taste.md.