Agent skill

design-spec

[Project Management] Create UI/UX design specifications from requirements, PBIs, or user stories. Produces structured design spec documents with layout, typography, colors, interactions, and responsive breakpoints. Triggers on design spec, design specification, UI specification, component spec, layout spec, wireframe, mockup.

Stars 6
Forks 1

Install this agent skill to your Project

npx add-skill https://github.com/duc01226/EasyPlatform/tree/main/.claude/skills/design-spec

SKILL.md

[IMPORTANT] Use TaskCreate to break ALL work into small tasks BEFORE starting — including tasks for each file read. This prevents context loss from long files. For simple tasks, AI MUST ask user whether to skip.

Quick Summary

Goal: Create structured UI/UX design specification documents from requirements or PBIs for developer handoff.

Workflow:

  1. Read Source — Extract UI requirements from PBI, story, or Figma URL
  2. Determine Complexity — Quick Spec (sections 1-4) vs Full Spec (all 7 sections)
  3. Build Component Inventory — List new vs existing components
  4. Define States & Tokens — Interactions, design tokens, responsive breakpoints
  5. Save Artifact — Output to team-artifacts/design-specs/

Key Rules:

  • If Figma URL provided → auto-routes to /figma-design for context extraction
  • If wireframe image provided → auto-routes to /wireframe-to-spec for structured analysis
  • If screenshot provided → uses ai-multimodal for design extraction
  • Reference existing design system tokens from docs/project-reference/design-system/
  • Component patterns: docs/project-reference/frontend-patterns-reference.md (content auto-injected by hook — check for [Injected: ...] header before reading)
  • Include accessibility requirements (keyboard nav, ARIA labels, contrast)

Be skeptical. Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence percentages (Idea should be more than 80%).

Design Specification

Create structured UI/UX design specification documents from requirements or PBIs for developer handoff.

When to Use

  • A PBI or user story needs a design spec before implementation
  • Translating requirements into concrete UI layout, states, and tokens
  • Documenting component inventory and interaction patterns
  • Creating responsive breakpoint specifications

When NOT to Use

  • This skill auto-routes Figma URLs to /figma-design and wireframes to /wireframe-to-spec — no need to call those skills separately
  • Building the actual UI -- use frontend-design
  • Full UX research and design process -- use ux-designer
  • Reviewing existing UI code -- use web-design-guidelines

Prerequisites

Read before executing:

  • The source PBI, user story, or requirements document
  • docs/project-reference/design-system/ -- project design tokens (if applicable)
  • Existing design specs in team-artifacts/design-specs/ for format consistency

Frontend/UI Context

When this task involves frontend or UI changes,

UI System Context — For frontend/UI/styling tasks, MUST READ these BEFORE implementing: frontend-patterns-reference.md (component base classes, stores, forms), scss-styling-guide.md (BEM methodology, SCSS vars, responsive), design-system/README.md (design tokens, component inventory, icons). MUST READ .claude/skills/shared/ui-system-context.md for full protocol and checklists.

  • Frontend patterns: docs/project-reference/frontend-patterns-reference.md
  • Styling/BEM guide: docs/project-reference/scss-styling-guide.md
  • Design system tokens: docs/project-reference/design-system/README.md

Workflow

  1. Read source input & route by type

    Input Detected Detection Action
    Figma URL figma.com/design or figma.com/file in text Activate /figma-design to extract context, then continue
    Image/screenshot Image file attached to prompt Use ai-multimodal to extract design guidelines, then continue
    Hand-drawn wireframe Image + "wireframe"/"sketch" keyword Activate /wireframe-to-spec to generate structured spec, then continue
    PBI/story text Acceptance criteria present Extract UI requirements from text, continue
    Verbal/text requirements No image, no URL, no PBI Clarify with user, then continue

    For ANY visual input: extract design context FIRST, then proceed to spec generation.

  2. Determine spec complexity

    IF single form or simple component → Quick Spec (sections 1-4 only)
    IF full page or multi-component view → Full Spec (all 7 sections)
    IF multi-page flow → Full Spec + Flow Diagram
    
  3. Build component inventory

    • List all UI components needed
    • Identify reusable vs feature-specific components
    • Note existing components from shared component library or design system
  4. Define states and interactions

    • Default, hover, active, disabled, error, loading, empty states
    • User interactions (click, drag, keyboard shortcuts)
    • Transitions and animations
  5. Extract design tokens

    • Colors, typography, spacing, shadows, border-radius
    • Reference existing design system tokens where possible
  6. Document responsive behavior

    • Mobile (320-767px), Tablet (768-1023px), Desktop (1024px+)
    • What changes at each breakpoint (layout, visibility, sizing)
  7. Save artifact

    • Path: team-artifacts/design-specs/{YYMMDD}-designspec-{feature-slug}.md

Output Format

markdown
# Design Spec: {Feature Name}

**Source:** {PBI/story reference}
**Date:** {YYMMDD}
**Status:** Draft | Review | Approved

## 1. Overview

{1-2 sentence summary of what this UI does}

## 2. Component Inventory

| Component | Type     | Source           | Notes                       |
| --------- | -------- | ---------------- | --------------------------- |
| UserCard  | New      | Feature-specific | Displays user avatar + name |
| DataTable | Existing | shared library   | Reuse with custom columns   |

## 3. Layout

{Description or ASCII wireframe of layout structure}

- Desktop: {layout description}
- Tablet: {layout changes}
- Mobile: {layout changes}

## 4. Design Tokens

| Token      | Value          | Usage                 |
| ---------- | -------------- | --------------------- |
| $primary   | #1976D2        | Action buttons, links |
| $text-body | 14px/1.5 Inter | Body text             |
| $gap-md    | 16px           | Section spacing       |

## 5. States & Interactions

| Element  | Default    | Hover      | Active     | Disabled         | Error |
| -------- | ---------- | ---------- | ---------- | ---------------- | ----- |
| Save btn | Blue/white | Darken 10% | Scale 0.98 | Gray/50% opacity | --    |

## 6. Accessibility

- Keyboard navigation order
- ARIA labels for interactive elements
- Color contrast compliance notes

## 7. Open Questions

- {Any unresolved design decisions}

Examples

Example 1: Simple form spec

Input: "Design spec for employee onboarding form"

Output: Quick Spec with sections 1-4 covering form fields (name, email, department dropdown, start date picker), validation rules, submit/cancel actions, and mobile stacking behavior.

Example 2: Complex dashboard spec

Input: "Design spec for recruitment pipeline dashboard with drag-and-drop columns"

Output: Full Spec covering Kanban board layout, candidate cards (component inventory), drag-and-drop interactions, column states (empty, populated, over-limit), filter bar, responsive collapse to list view on mobile, and accessibility for keyboard drag operations.

Related Skills

Skill When to use instead
ux-designer Full UX design process with research
figma-design Extract specs from Figma designs
frontend-design Build the actual UI implementation
interface-design Product UI design (dashboards, apps)
web-design-guidelines Review existing UI for compliance

Workflow Recommendation

IMPORTANT MUST: If you are NOT already in a workflow, use AskUserQuestion to ask the user:

  1. Activate design-workflow workflow (Recommended) — design-spec → code-review
  2. Execute /design-spec directly — run this skill standalone

Closing Reminders

  • MUST break work into small todo tasks using TaskCreate BEFORE starting
  • MUST search codebase for 3+ similar patterns before creating new code
  • MUST cite file:line evidence for every claim (confidence >80% to act)
  • MUST add a final review todo task to verify work quality MANDATORY IMPORTANT MUST READ the following files before starting:
  • MUST READ .claude/skills/shared/ui-system-context.md before starting

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