claude/lib/design-gate.md

DESIGN GATE — Auto-detect design tasks, ensure the design toolchain is active

Inline snippet. Include in any agent STEP 0 that may touch UI/design.

WHEN TO RUN

Run this gate when the task description OR target files match design signals.

DETECTION

Check BOTH the task description AND the filesystem:

Task description signals (case-insensitive match on $ARGUMENTS):

• UI keywords: component, button, card, modal, dialog, tooltip, dropdown, sidebar, navbar, header, footer, layout, grid, form, input, table
• Style keywords: css, style, theme, color, font, spacing, margin, padding, border, shadow, animation, transition, hover, responsive, dark mode, light mode
• Design keywords: design, ui, ux, visual, polish, pixel, figma, mockup, wireframe, prototype
• Framework UI: tailwind, styled-component, emotion, chakra, radix, shadcn, headless

Filesystem signals (quick check, no deep scan):

• Target files have .tsx, .jsx, .css, .scss, .less, or .module.css extension
• tailwind.config or postcss.config present in project root
• tokens/, theme/, or design-system/ directory exists
• Storybook config (.storybook/) present
• Animation lib in package.json deps: motion, motion-v, framer-motion (legacy), gsap, @gsap/react, lottie-react, react-spring, popmotion, @formkit/auto-animate

DECISION

Source of truth for activation is the profile system — never an atomic per-tool toggle. The gate's whole job: confirm the design toolchain is active, and if not, point at ONE command — /profile design.

1. Tier — does the gate even apply?

• Trivial (≤2 files, single cosmetic value, one CSS tweak — same scope as /hotfix) → no design tools required. Skip the gate, proceed.
• Build UI / design system / review-audit → toolchain required, continue.
• In doubt (trivial tweak vs real UI change) → do NOT silently skip: ask the user, or default to the Build tier.

Tier does NOT change WHAT gets checked. Every non-trivial design tier draws from the one design profile — so the gate checks that profile's design-core tools (the # GATE-BLOCK: allowlist in design.profile: ui-ux-pro-max, frontend-design, emil-design-eng, design-motion-principles, design-html, design-review, design-consultation, magic). The profile also bundles browser/plan/shotgun tooling and graphify for convenience; those never trip the gate. Motion (design-motion-principles) and static-HTML (design-html) are already in the core set — checked regardless; their CLAUDE.md "+motion / +static" notes say which tool you'll lean on, not a separate activation step.

2. State — run the deterministic check

bash "$HOME/.claude/lib/design-tool-gate.sh"

It reads the design-core tools (# GATE-BLOCK: in design.profile) plus their types (profile.sh show design --plain) and checks each on its own channel — skill symlink, claude plugin list, claude mcp list, command -v. It never reads disabledMcpServers (unreliable for bi-modal servers like magic/context7). The core set lives in design.profile, not in the script or here — single source.

Exit codes: 0 = ready (proceed) · 10 = incomplete (gate trips) · 2 = error.

3. Branch on the result

• 0 / READY → proceed silently. Toolchain is active.

• 10 / INCOMPLETE → STOP. The script reports up to three groups; relay them and the remedy to the user:

  🎨 DESIGN DETECTED — the design toolchain isn't fully active.
  activate with /profile design:        <skills / ui-ux-pro-max>
  required + manual step:                <e.g. magic — needs MAGIC_API_KEY>
  → run  /profile design  to activate it, then continue.
  

  • activate with /profile design → skills + the plugin; /profile design turns them on directly.
  • required + manual step → required tools the profile can't flip silently. magic lands here: it TRIPS the gate (it's required for Build), it is NOT a silent "optional". /profile design runs toggle-external.sh for magic, which needs a valid MAGIC_API_KEY in ~/.claude/.env — tell the user to verify it.
  • Do NOT hand-activate individual tools. The profile is the unit of activation.

• unverified line (claude CLI absent) → the state of a plugin/mcp couldn't be checked; it does not block. Mention it, proceed.

Other toolchains

The script defaults to the design profile. A task needing another profile's toolchain passes it: design-tool-gate.sh <profile>. Scope comes from that profile's # GATE-BLOCK: line (absent → every skill/plugin/mcp entry). The remedy is always /profile <that> — a profile, never a lone tool.

IMPORTANT

• Remedy is ALWAYS a profile (/profile design), never an atomic tool toggle — the profile system is the single source of truth for what's active.
• magic is REQUIRED (it trips the gate), but /profile design only enables it if MAGIC_API_KEY is in ~/.claude/.env — the gate says so; surface that to the user.
• The design-core set (what trips the gate) is declared in design.profile on the # GATE-BLOCK: line(s) — edit there to add/remove a blocking design tool, not in the script.
• The state check shells out to claude (plugin/mcp list): a few seconds. Trivial / non-design tasks skip it entirely (no signal, or trivial tier).
• design-tool-gate.sh's per-type state checks MIRROR profile.sh:skill_status() — change one, sync the other.
• Do NOT run this gate on pure backend/API/CLI tasks (no signals = no gate).