codex

Design Expert

Design Director for websites, web apps, iOS, and Android. Generates HTML/CSS design deliverables with Gemini Design MCP, Magic/21st.dev, and shadcn as optional tools. Mobile targets produce tokens, device-framed mockups, and handoff specs, never SwiftUI/Compose implementation code. Anti-AI-Slop, WCAG 2.2.

2 on GitHubby Fusenginev2.1.53MITupdated todayDesign

Plugin design-expert in Fusengine/codex-plugins. Commands read from the repo's manifest — today.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (10)

  • design-android

    Use when designing an Android screen or flow — deliverable is a device-framed HTML mockup and developer handoff spec, never Compose code.

  • design-ios

    Use when designing a screen or flow for any Apple platform — iPhone (incl. iPhone Duo), iPad, Mac, Apple Watch, Apple TV or Vision Pro — deliverable is a device/window-framed HTML mockup and a handoff spec, never SwiftUI code.

  • design-method

    Use when starting any design task — resolves register, sets the 3 dials, locks Gate 0, and routes to the right move and target skill.

  • design-motion

    Use when adding or reviewing motion on an already-settled layout or component — never to hide or compensate for an unfinished one.

  • design-review

    Use when a design deliverable is about to be reported done — the final quality gate after design-motion or a mobile mockup.

  • design-system

    Use when starting any design task, before choosing or auditing a color/type/spacing token or writing design-system.md — routing step 1.

  • design-web

    Use when building or revising a marketing/landing/campaign page, register `brand` locked at Gate 0 — use design-webapp for app screens instead.

  • design-webapp

    Use when building or extending a dashboard, SaaS screen, or any authenticated app surface — use design-web instead for a marketing site.

  • taste-first

    Autonomous art-direction workflow for brand register generate and redesign moves. Use when: creating or rebuilding a brand/marketing surface from a sufficient brief and real assets. Do NOT use for: product UI, audits, refinement moves, or mobile product mockups.

  • ux-copy

    Use when writing or reviewing any visible copy — headlines, buttons, body, errors, empty states — inside a design-method move or standalone.

Slash commands (5)

  • /design-expert:audit-design

    Audit an existing HTML/CSS design. Deterministic checks only (contrast, fonts, colors, states, dark mode) plus a visual pass. No generation.

  • /design-expert:design-component

    Routes single-component generation by register and move: taste-first for brand generation/redesign, existing-token component workflow otherwise.

  • /design-expert:design-mobile

    iOS or Android mockup + handoff spec. Argument: ios|android. Produces tokens, a device-framed HTML mockup, and a spec for swift-expert or an Android developer — never SwiftUI/Compose code.

  • /design-expert:design-page

    Routes a new page or screen in an existing project by register and move; taste-first may defer existing tokens until concept lock.

  • /design-expert:design

    Routes a full web or web-app design by register and move: taste-first for brand generate/redesign, generic design-method otherwise. Use /prompts:design-mobile for iOS/Android.

Hooks (11)

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PostToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PostToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PostToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PostToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • SubagentStart

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • SubagentStop

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

View source on GitHub

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