Create distinctive, production-grade frontend interfaces with exceptional design quality. Two modes - (1) New projects - bold aesthetic design philosophy including typography, color theory, spatial composition, motion design, visual details, avoiding generic AI aesthetics, creating unforgettable interfaces. (2) Existing codebases - mandatory design language analysis enforcing consistency by scanning layout patterns, typography hierarchy, component structure, spacing, theme systems before implementation. Use when building components, pages, applications, design systems, UI modifications. Covers React, Vue, Next.js, HTML/CSS, Tailwind. Keywords - create component, build page, design interface, add UI, aesthetic design, visual design, typography, animations, spatial layout, design system, consistency, pattern analysis, existing codebase.
Detects existing codebases and enforces design consistency by analyzing patterns before implementation, or creates bold, distinctive aesthetic interfaces for new projects with full creative freedom. Use when building components, pages, or UI modifications.
/plugin marketplace add JNLei/claude-tools/plugin install frontend-development@claudesmith-marketplaceThis skill inherits all available tools. When active, it can use any tool Claude has access to.
EXAMPLES.mdEXISTING-CODEBASE-CHECKLIST.mdNEW-PROJECT-DESIGN.mdREFERENCE.mdThis skill provides two distinct workflows for creating production-grade frontend interfaces:
Answer this question: Is there an existing codebase with components, pages, or a design system?
Use this workflow: EXISTING-CODEBASE-CHECKLIST.md
Purpose: Enforce design language consistency by analyzing existing patterns before implementation.
When to use:
Process: Mandatory 3-phase checklist (Design Analysis → Decisions → Implementation)
Use this workflow: NEW-PROJECT-DESIGN.md
Purpose: Create bold, distinctive aesthetic design from scratch.
When to use:
Process: Design thinking → Aesthetic principles → Implementation
For consistency in existing codebases: → EXISTING-CODEBASE-CHECKLIST.md
For aesthetic design philosophy: → NEW-PROJECT-DESIGN.md
For real-world examples: → EXAMPLES.md
For deep-dive principles: → REFERENCE.md
Still unsure which scenario applies? Default to EXISTING-CODEBASE-CHECKLIST if there's any existing code to reference.
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.