Agent skill
scaffold
Generate complete feature structures based on your project patterns with full continuity
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/scaffold
SKILL.md
Intelligent Scaffolding
I'll create complete feature structures based on your project patterns, with full continuity across sessions.
Arguments: $ARGUMENTS - feature name or component to scaffold
Token Optimization Strategy
Target: 65% reduction (3,500-5,000 → 1,200-2,000 tokens) Status: ✅ Optimized (Phase 2 Batch 3D-F, 2026-01-26)
Optimization Techniques Applied
1. Template-Based Scaffolding
- Pattern: Reuse existing feature structures as templates
- Implementation: Glob → identify similar features → copy patterns
- Savings: 70% (avoid reading documentation, reduce analysis)
- Example:
markdown
# Instead of analyzing 20 files for patterns: Glob "src/features/*/index.ts" → Find 5 existing features Read ONLY one representative feature → Extract pattern Reuse pattern for new scaffolding → Generate with heredocs Before: 15,000 tokens (read all features) After: 1,500 tokens (read one, reuse pattern) Savings: 90%
2. Framework Detection Caching
- Pattern: Cache framework type and conventions from
/understand - Implementation: Check
.claude/cache/understand/project-analysis.json - Savings: 80% (skip framework detection)
- Cache Keys:
framework: React/Vue/Angular/Sveltestructure: File organization patternconventions: Naming and export patternstestFramework: Jest/Vitest/Mocha
3. Project Conventions Caching
- Pattern: Learn and cache project-specific patterns
- Location:
.claude/cache/scaffold/conventions.json - Cached Data:
json
{ "naming": "kebab-case|PascalCase|camelCase", "fileStructure": "feature-folders|type-folders|flat", "imports": "absolute|relative", "exports": "named|default", "testLocation": "adjacent|__tests__|separate" } - Savings: 60% (skip pattern analysis on resume)
4. Bash-Based File Generation
- Pattern: Use heredocs for creating multiple files efficiently
- Implementation:
bash
cat > src/features/user/index.ts <<'EOF' export * from './UserProfile' export * from './types' EOF cat > src/features/user/UserProfile.tsx <<'EOF' import React from 'react' // Component code generated from template EOF - Savings: 50% (single Bash call vs multiple Write calls)
- Benefits: Atomic operations, better error handling
5. Incremental Scaffolding
- Pattern: Generate one component at a time with validation
- State Tracking:
scaffold/state.jsontracks completed files - Resume Support:
json
{ "feature": "UserProfile", "created": ["index.ts", "types.ts", "UserProfile.tsx"], "pending": ["UserProfile.test.tsx", "UserProfile.stories.tsx"], "lastFile": "UserProfile.tsx" } - Savings: 80% on resume (skip created files)
6. Git Diff Before Scaffolding
- Pattern: Check for existing files to avoid overwrites
- Implementation:
bash
git ls-files src/features/user/ # Check if feature exists - Savings: 95% (immediate exit if feature exists)
- Safety: Prevents accidental overwrites
Token Cost Breakdown
Phase 1: Pattern Discovery (500-800 tokens)
- Check session: 50 tokens (Bash ls scaffold/)
- Framework detection: 100 tokens (cache hit) or 500 tokens (cache miss)
- Glob existing features: 150 tokens
- Read ONE template feature: 300-500 tokens
- Total: 600-1,200 tokens (vs 8,000 unoptimized)
Phase 2: Planning (200-400 tokens)
- Generate file list: 100 tokens (from template)
- Create plan.md: 50 tokens (Write)
- Initialize state.json: 50 tokens (Write)
- Total: 200 tokens (vs 2,000 unoptimized)
Phase 3: File Generation (500-800 tokens)
- Bash heredoc generation: 400-600 tokens (all files in one call)
- Update state.json: 50 tokens
- Git status check: 100 tokens
- Total: 550-750 tokens (vs 5,000 unoptimized)
Resume Session (300-600 tokens)
- Read state.json: 100 tokens
- Check pending files: 50 tokens
- Generate remaining files: 200-400 tokens
- Total: 350-550 tokens (vs 3,000 unoptimized)
Optimization Results
Token Savings:
- New scaffolding: 3,500-5,000 → 1,200-2,000 tokens (65% reduction)
- Resume session: 3,000-4,000 → 300-600 tokens (85% reduction)
- Small scaffold: 2,000-3,000 → 500-1,000 tokens (67% reduction)
- Average: 65% token reduction
Cost Comparison:
Before Optimization:
- New feature: 4,000 tokens × $0.003 = $0.012
- Resume: 3,500 tokens × $0.003 = $0.0105
- Annual (50 scaffolds): $0.60
After Optimization:
- New feature: 1,500 tokens × $0.003 = $0.0045
- Resume: 500 tokens × $0.003 = $0.0015
- Annual (50 scaffolds): $0.21
Savings: $0.39/year per developer (65% reduction)
Caching Strategy
Cache Locations:
- Session state:
scaffold/in project rootplan.md: Scaffolding plan and file liststate.json: Progress tracking and created files
- Framework cache:
.claude/cache/understand/- Shared with
/understand,/implement,/boilerplate
- Shared with
- Convention cache:
.claude/cache/scaffold/conventions.json: Project-specific patternstemplates/: Cached feature templates
Cache Invalidation:
- Session cache: Cleared on completion or explicit
newcommand - Framework cache: Valid until project structure changes
- Convention cache: Valid for 7 days or until pattern mismatch
Shared Caches:
/understand: Framework and structure analysis/implement: Project patterns and dependencies/boilerplate: Framework-specific templates/types-generate: Type generation patterns
Usage Examples
Optimized Flow (1,200-2,000 tokens):
# First scaffolding in project
claude "scaffold UserProfile"
Step 1: Check session (50 tokens)
Step 2: Load framework cache (100 tokens, cache hit)
Step 3: Find template features (150 tokens, Glob)
Step 4: Read one template (500 tokens)
Step 5: Generate plan (200 tokens)
Step 6: Create files with heredocs (600 tokens)
Total: 1,600 tokens
Resume Flow (300-600 tokens):
# Continue scaffolding
claude "scaffold resume"
Step 1: Read state.json (100 tokens)
Step 2: Load cached conventions (50 tokens)
Step 3: Generate remaining files (400 tokens)
Total: 550 tokens (85% savings)
Specific Type Flow (800-1,500 tokens):
# Scaffold specific component type
claude "scaffold --api-route users"
Step 1: Check session (50 tokens)
Step 2: Load route template (200 tokens)
Step 3: Generate route files (500 tokens)
Total: 750 tokens (75% savings)
Implementation Notes
Critical Optimizations:
- Always check for session first - Saves 80% on resume
- Use framework cache - Shared with
/understandskill - Template-based generation - Avoid analysis overhead
- Bash heredocs - Efficient multi-file creation
- Incremental state tracking - Perfect resume support
Anti-Patterns to Avoid:
- ❌ Reading all existing features for pattern analysis
- ❌ Analyzing framework from scratch (use cache)
- ❌ Creating files one Write call at a time
- ❌ Regenerating already-created files on resume
- ❌ Full project scan without focusing on feature area
Quality Assurance:
- All files follow project conventions (from cache)
- Tests generated using project test patterns
- Imports use project import style (absolute vs relative)
- File names match project naming convention
- No duplicate scaffolding (git diff check)
Session Intelligence
I'll maintain scaffolding progress across sessions:
Session Files (in current project directory):
scaffold/plan.md- Scaffolding plan and component listscaffold/state.json- Created files and progress
IMPORTANT: Session files are stored in a scaffold folder in your current project root
Auto-Detection:
- If session exists: Resume incomplete scaffolding
- If no session: Create new scaffolding plan
- Commands:
resume,status,new
Phase 1: Pattern Discovery
MANDATORY FIRST STEPS:
- Check if
scaffolddirectory exists in current working directory - If directory exists, check for session files:
- Look for
scaffold/state.json - Look for
scaffold/plan.md - If found, resume from existing session
- Look for
- If no directory or session exists:
- Analyze project patterns
- Create scaffolding plan
- Initialize progress tracking
- Show scaffolding preview before creating
Note: Always look for session files in the current project's scaffold/ folder, not ../../../scaffold/ or absolute paths
I'll discover your project patterns:
Pattern Analysis:
- File organization structure
- Naming conventions
- Testing patterns
- Import/export styles
- Documentation standards
Smart Detection:
- Find similar features already implemented
- Identify architectural patterns
- Detect testing frameworks
- Understand build configuration
Phase 2: Scaffolding Planning
Based on patterns, I'll create a scaffolding plan:
Component Structure:
- Main feature files
- Test files
- Documentation
- Configuration updates
- Integration points
I'll write this plan to scaffold/plan.md with:
- Each file to create
- Template patterns to follow
- Integration requirements
- Creation order
Phase 3: Intelligent Generation
I'll generate files matching your patterns:
Pattern Matching:
- Use your file naming style
- Follow your directory structure
- Match your code conventions
- Apply your testing patterns
Content Generation:
- Boilerplate from existing code
- Imports matching your style
- Test structure from your patterns
- Documentation in your format
Phase 4: Incremental Creation
I'll create files systematically:
Execution Process:
- Create directory structure
- Generate each component file
- Add appropriate tests
- Update integration points
- Track each creation in state
Progress Tracking:
- Mark each file created in plan
- Update state with file paths
- Create meaningful commits
Phase 5: Integration
After scaffolding:
- Update route configurations
- Add to module exports
- Update build configuration
- Verify everything connects
Context Continuity
Session Resume:
When you return and run /scaffold or /scaffold resume:
- Load existing plan and progress
- Show what was already created
- Continue from last component
- Maintain pattern consistency
Progress Example:
RESUMING SCAFFOLDING
├── Feature: UserDashboard
├── Created: 5 of 8 files
├── Last: components/UserStats.tsx
└── Next: tests/UserStats.test.tsx
Continuing scaffolding...
Practical Examples
Start Scaffolding:
/scaffold UserProfile # Create user profile feature
/scaffold "auth module" # Create authentication module
/scaffold PaymentService # Create payment service
Session Control:
/scaffold resume # Continue existing scaffolding
/scaffold status # Check what's been created
/scaffold new # Start fresh scaffolding
Safety Guarantees
Protection Measures:
- Preview before creation
- Incremental file generation
- Pattern validation
- Integration verification
Important: I will NEVER:
- Overwrite existing files
- Break existing imports
- Add AI attribution
- Create without following patterns
What I'll Actually Do
- Analyze deeply - Understand your patterns
- Plan completely - Map all components
- Generate intelligently - Match your style
- Track precisely - Perfect continuity
- Integrate seamlessly - Connect everything
I'll maintain complete continuity between sessions, always resuming exactly where we left off with consistent pattern application.
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