Skill Analyzer

Overview

This skill analyzes a project's CLAUDE.md file to understand requirements, then intelligently selects relevant skills from the SkillOS library and identifies project-specific skills that need to be created. It updates CLAUDE.md with a complete skills index that guides development work.

When to Use This Skill

Use this skill when:

• Initial CLAUDE.md has been created and needs skill mapping
• Project requirements have evolved and skill selection needs updating
• Starting work on a cloned SkillOS repository for a new project
• Auditing which skills are actually relevant to the current project

Important: This skill requires an existing CLAUDE.md file with project context (sections 1-4). Run project-context-generator first if CLAUDE.md doesn't exist.

Workflow

Step 1: Locate and Read CLAUDE.md

Ask the user for the CLAUDE.md file location (if not provided):

• "Where is your project's CLAUDE.md file?"
• Default assumption: ./CLAUDE.md in the current working directory

Read and parse the CLAUDE.md file, focusing on:

• Project Overview (section 1): Goals, use cases, target users
• Technical Architecture (section 2): Tech stack, structure, key decisions
• Project Constraints (section 3): Performance, security, resources
• Development Conventions (section 4): Naming, testing, code style

Step 2: Identify SkillOS Location

Determine where the SkillOS library is located:

• Check if the current directory contains a meta-skills/ folder
• If yes, assume SkillOS skills are in the current directory structure
• If no, ask: "Where is your SkillOS library located?"

Expected SkillOS structure:

SkillOS/
├── meta-skills/           # Meta-skills that operate on other skills
│   ├── project-context-generator/
│   ├── skill-analyzer/
│   └── ...
└── skills/                # General-purpose skills (optional, depends on user's organization)
    ├── frontend-design/
    ├── api-design/
    └── ...

Step 3: Scan Available Skills

Traverse the SkillOS directory to build a catalog of available skills:

For each skill found:

1. Read the SKILL.md frontmatter (name + description)
2. Extract skill metadata:
   • Name
   • Description (what it does + when to use)
   • Skill type (meta-skill vs. general skill)
3. Store in a temporary catalog for analysis

Output example:

Found 15 skills in SkillOS:
  Meta-skills (3):
    - project-context-generator
    - skill-analyzer
    - skill-creator
  General skills (12):
    - frontend-design
    - api-design
    - database-schema
    - ...

Step 4: Match Skills to Project Requirements

Analyze the project context against each skill's description to determine relevance.

Matching criteria:

• Tech stack alignment: Does the skill's domain match the project's technologies?
  • Example: frontend-design skill for a React project
• Domain relevance: Does the skill address problems in this project's domain?
  • Example: pdf-processing skill if project generates reports
• Workflow needs: Does the project workflow benefit from this skill?
  • Example: docx skill if documentation is a key deliverable
• Explicit mentions: Are there specific references in CLAUDE.md?
  • Example: "need to generate visualizations" → data-visualization skill

Scoring approach (simple heuristic):

• High relevance: Core to the project (e.g., frontend skill for a web app)
• Medium relevance: Potentially useful but not central
• Low relevance: Marginal or speculative utility

Select skills with High or Medium relevance.

Example output:

Selected 6 relevant skills:
  - frontend-design (High)
  - api-design (High)
  - database-schema (High)
  - docx (Medium - for documentation)
  - skill-creator (Medium - for creating project-specific skills)
  - testing-patterns (Medium)

Step 5: Identify Missing Project-Specific Skills

Based on the project context, identify domain-specific skills that don't exist in the SkillOS library but should be created for this project.

Look for:

• Domain models: Unique business logic or data models
  • Example: "User membership tiers with points system" → membership-management skill
• Integrations: Third-party APIs or services
  • Example: "Stripe payment processing" → payment-integration skill
• Specialized workflows: Project-specific processes
  • Example: "ETL pipeline for customer data" → customer-data-pipeline skill
• Business rules: Complex or frequently-referenced logic
  • Example: "Pricing calculation with volume discounts" → pricing-engine skill

For each missing skill, define:

• Name: Descriptive name for the skill
• Rationale: Why this skill is needed for the project
• Suggested content: What should be included (references, scripts, workflows)
• Priority: High (core to project), Medium (helpful but not critical), Low (nice-to-have)

Example output:

Identified 3 missing skills:

1. ecommerce-product-catalog (High priority)
   - Rationale: Product management is core to this e-commerce platform
   - Suggested content:
     - Product schema and category hierarchy
     - SKU generation and validation rules
     - Inventory sync workflows
     - references/product_schema.md
     - scripts/validate_sku.py

2. payment-integration (High priority)
   - Rationale: Stripe integration with custom retry logic and webhook handling
   - Suggested content:
     - Stripe API integration patterns
     - Webhook signature verification
     - Refund and chargeback workflows
     - references/stripe_api.md
     - scripts/webhook_handler.py

3. user-membership (Medium priority)
   - Rationale: Membership tiers affect pricing and features
   - Suggested content:
     - Membership tier definitions
     - Points calculation logic
     - Tier upgrade/downgrade rules
     - references/membership_rules.md

Step 6: Update CLAUDE.md

Update the CLAUDE.md file with two sections:

Section 5: Available Skills

For each selected skill, add:

• Skill name (linked to the skill if possible)
• Relevance to this project: Brief explanation of why/when to use in this context
• Key use cases: Specific scenarios in this project where the skill applies
• Related skills: Other skills that work well in combination

Example:

## 5. Available Skills

### frontend-design
**Relevance:** Core skill for building the e-commerce UI with React and Tailwind.
**Key use cases:**
- Creating product listing pages
- Building shopping cart interface
- Implementing checkout flow
**Related skills:** Works with `api-design` for data fetching, `testing-patterns` for component tests.

### api-design
**Relevance:** Guides RESTful API design for product, cart, and order endpoints.
**Key use cases:**
- Designing product catalog API
- Implementing cart management endpoints
- Creating order processing API
**Related skills:** Works with `database-schema` for data modeling.

Section 6: Missing Skills (Project-Specific)

For each identified missing skill, add:

• Skill name
• Rationale: Why it's needed
• Suggested content: What should be included
• Priority: High/Medium/Low
• Next steps: Guidance on creating the skill (e.g., "Use skill-creator to generate this skill")

Example:

## 6. Missing Skills (Project-Specific)

### ecommerce-product-catalog
**Rationale:** Product management is core to this e-commerce platform. Centralizing product schema, SKU rules, and inventory workflows will ensure consistency.

**Suggested content:**
- `references/product_schema.md` - Product and category data models
- `references/sku_rules.md` - SKU generation and validation logic
- `scripts/validate_sku.py` - SKU validation utility

**Priority:** High

**Next steps:** Use `skill-creator` to initialize this skill, then populate with project-specific product logic.

Save the updated CLAUDE.md file.

Step 7: Report Results

Present a summary to the user:

✅ Skill analysis complete!

📊 Results:
- Scanned 15 skills in SkillOS
- Selected 6 relevant skills (added to section 5)
- Identified 3 missing project-specific skills (added to section 6)

📝 Updated CLAUDE.md at [path]

🎯 Next steps:
1. Review the "Available Skills" section - adjust if any are irrelevant
2. Review the "Missing Skills" section - prioritize which to create first
3. Use `skill-creator` to build the missing skills as needed

Important Notes

Skills Stay Independent

This skill does not modify any skills in the SkillOS library. It only reads their metadata and creates an index in CLAUDE.md.

Project-specific context lives in CLAUDE.md, not in the skills themselves.

Re-run When Requirements Change

As the project evolves, requirements may shift. Re-run this skill to:

• Add newly relevant skills
• Remove skills that are no longer applicable
• Update missing skills list based on new needs

Skill Selection is Heuristic-Based

The skill matching process is not perfect. Users should review and adjust:

• Remove skills that aren't actually needed
• Add skills that were missed
• Adjust priorities for missing skills

Encourage user review: "Please review the selected skills and let me know if any should be added or removed."

Resources

This skill doesn't require external references or scripts. It operates by:

1. Reading SKILL.md frontmatter from skills in SkillOS
2. Analyzing project context in CLAUDE.md
3. Applying matching heuristics
4. Updating CLAUDE.md with results