Agent Skills Installer for Claude Code

The /skills-installer command installs Agent Skills - model-controlled configuration packages that extend Claude's capabilities with specialized domain knowledge.

Features

• 47 Specialized Skills: Domain-specific expertise packages
• Progressive Disclosure: Skills activate only when relevant to task
• Plugin System: Modular knowledge packages
• Auto-Activation: Claude automatically selects appropriate skills
• Skill Discovery: Browse available skills by category
• Version Management: Update skills as they evolve
• Dependency Resolution: Auto-install required dependencies
• Team Sharing: Commit skills config to git

Usage

/skills-installer [action] [skill-name]

Actions

• --install - Install skill by name
• --list - List available skills
• --installed - Show installed skills
• --uninstall - Remove skill
• --update - Update installed skills
• --search - Search skills by keyword

Categories

• --development - Programming and development skills
• --devops - Infrastructure and deployment
• --data - Data science and analytics
• --security - Security and compliance
• --frontend - UI/UX and frontend
• --backend - Server-side and APIs

What Are Agent Skills?

Agent Skills are model-controlled configurations that give Claude specialized knowledge:

• Files, scripts, resources for specific domains
• Activated automatically when relevant
• Extend capabilities without manual prompting
• Similar to VS Code extensions but for AI

Examples

Install React 19 Skill

Command:

/skills-installer --install react-19-expert

Installation:

[Installing Skill: React 19 Expert]

✓ Downloaded skill package
✓ Installed dependencies
✓ Configured activation triggers

Skill Capabilities:
- React 19.1 features (use hook, Server Actions)
- React Compiler optimization
- Server Components best practices
- Concurrent rendering patterns
- New hooks (useOptimistic, useFormStatus)

Activation Triggers:
- React file detected (*.tsx, *.jsx)
- package.json contains "react": "^19"
- Prompts mentioning React/components

✓ Skill installed successfully

Auto-Activation:

User: "Create a form with optimistic updates"

[Agent Skill: React 19 Expert - Activated]

Claude: "I'll use React 19's useOptimistic hook for this..."

// Generated code uses React 19 patterns
import { useOptimistic } from 'react';

export function TodoForm({ addTodo }: Props) {
  const [optimisticTodos, addOptimisticTodo] = useOptimistic(
    todos,
    (state, newTodo) => [...state, newTodo]
  );

  // ...
}

Install TypeScript Strict Mode Skill

Command:

/skills-installer --install typescript-strict

Skill Details:

[TypeScript Strict Mode Expert]

Capabilities:
- Enforce strict mode conventions
- No `any` type - suggest `unknown` instead
- Proper type guards
- Discriminated unions
- Advanced type inference

Configuration:
  "compilerOptions": {
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitReturns": true
  }

✓ Installed

Effect:

// Before skill:
function getData(id: any) {
  // Claude might use 'any'
  return data[id];
}

// After skill activated:
function getData(id: string): User | undefined {
  // Strict types
  const user = data[id]; // Could be undefined
  if (!user) {
    throw new Error(`User ${id} not found`);
  }
  return user;
}

Install Multiple Skills

Command:

/skills-installer --install next-15-expert prisma-advanced tdd-workflow

Batch Installation:

[Installing 3 Skills]

1/3 Next.js 15 Expert
  ✓ Installed
  - App Router patterns
  - Server Components
  - Partial Prerendering
  - React 19 integration

2/3 Prisma Advanced
  ✓ Installed
  - Query optimization
  - N+1 prevention
  - Migration strategies
  - Type safety patterns

3/3 TDD Workflow
  ✓ Installed
  - Test-first development
  - Red-green-refactor
  - Coverage enforcement
  - Mock strategies

✓ All skills installed

List Available Skills

Command:

/skills-installer --list --category=development

Output:

[Available Development Skills]

## Frontend
- react-19-expert - React 19.1 features and patterns
- next-15-expert - Next.js 15 App Router mastery
- tailwind-v4 - TailwindCSS v4 modern patterns
- svelte-5-runes - Svelte 5 with runes system

## Backend
- node-20-performance - Node.js 20 performance patterns
- fastify-optimization - Fastify web framework expert
- graphql-federation - GraphQL Federation v2
- prisma-advanced - Advanced Prisma ORM patterns

## Testing
- vitest-advanced - Vitest testing mastery
- playwright-e2e - Playwright E2E testing
- tdd-workflow - Test-driven development expert

## Language Expertise
- typescript-strict - TypeScript strict mode expert
- python-type-hints - Python typing and mypy
- go-idioms - Go language idioms
- rust-ownership - Rust ownership patterns

Total: 47 skills available
Installed: 0

View Installed Skills

Command:

/skills-installer --installed

Output:

[Installed Skills]

✓ react-19-expert (v1.2.0)
  Last used: 2 hours ago
  Activations: 45 times

✓ typescript-strict (v2.1.0)
  Last used: Active now
  Activations: 120 times

✓ next-15-expert (v1.0.5)
  Last used: Yesterday
  Activations: 30 times

3 skills installed
Storage: 2.4 MB

Search Skills

Command:

/skills-installer --search "database optimization"

Results:

[Search Results: database optimization]

1. prisma-advanced
   Description: Advanced Prisma patterns with query optimization
   Tags: database, orm, optimization, performance

2. postgres-performance
   Description: PostgreSQL query optimization and indexing
   Tags: database, postgresql, performance, sql

3. mongodb-aggregation
   Description: MongoDB aggregation pipeline mastery
   Tags: database, mongodb, nosql, performance

Found 3 matching skills

Skill Categories

Frontend Skills

• react-19-expert - React 19 features
• next-15-expert - Next.js 15 patterns
• vue-3-composition - Vue 3 Composition API
• svelte-5-runes - Svelte 5 runes
• tailwind-v4 - TailwindCSS v4
• framer-motion-advanced - Animation patterns

Backend Skills

• node-20-performance - Node.js optimization
• fastapi-async - FastAPI async patterns
• nestjs-microservices - NestJS architecture
• express-security - Express.js security
• graphql-federation - GraphQL Federation

Database Skills

• prisma-advanced - Prisma ORM mastery
• postgres-performance - PostgreSQL optimization
• mongodb-aggregation - MongoDB pipelines
• redis-caching - Redis caching strategies
• drizzle-orm - Drizzle ORM patterns

DevOps Skills

• docker-optimization - Docker best practices
• kubernetes-deployment - K8s deployments
• github-actions-ci - GitHub Actions CI/CD
• terraform-iac - Infrastructure as Code
• vercel-edge - Vercel Edge Functions

Testing Skills

• vitest-advanced - Vitest mastery
• playwright-e2e - Playwright E2E
• cypress-component - Cypress testing
• tdd-workflow - Test-driven development
• jest-migration - Jest to Vitest migration

Security Skills

• owasp-top-10 - OWASP security patterns
• auth-best-practices - Authentication/authorization
• input-validation - Input sanitization
• secrets-management - Secret handling
• csrf-protection - CSRF prevention

Progressive Disclosure

How Skills Activate

User: "Fix the login component"

[Skill Selection Process]
1. Detect context: React component
2. Check installed skills
3. Activate: react-19-expert
4. Load knowledge: React 19 patterns
5. Apply to task

Claude: *Uses React 19 patterns automatically*

Multiple Skills Simultaneously

User: "Optimize the database queries in the API"

[Skills Activated]
✓ prisma-advanced (database queries)
✓ node-20-performance (API optimization)
✓ typescript-strict (type safety)

Claude: *Combines knowledge from all 3 skills*

Skill Configuration

Where Skills Are Stored

# Project skills (team-shared)
.claude/
  skills/
    react-19-expert/
      config.json
      patterns.md
      examples/
    typescript-strict/
      config.json
      rules.md

# User skills (personal)
~/.claude/
  skills/
    personal-shortcuts/

Skill Configuration File

// .claude/skills/react-19-expert/config.json
{
  "name": "react-19-expert",
  "version": "1.2.0",
  "description": "React 19 expert with latest features",
  "activationTriggers": [
    { "filePattern": "**/*.{tsx,jsx}" },
    { "keyword": "react" },
    { "packageJson": "react" }
  ],
  "capabilities": [
    "React 19.1 features",
    "Server Components",
    "React Compiler",
    "New hooks"
  ],
  "dependencies": ["typescript-strict"]
}

Updating Skills

Command:

/skills-installer --update

Update Process:

[Checking for Updates]

✓ react-19-expert: v1.2.0 → v1.3.0 available
  - Added Server Actions patterns
  - Improved useOptimistic examples

✓ typescript-strict: Up to date (v2.1.0)

✓ next-15-expert: v1.0.5 → v1.1.0 available
  - Partial Prerendering patterns
  - Updated caching strategies

Update all? (y/n): y

[Updating 2 skills]
✓ react-19-expert updated
✓ next-15-expert updated

All skills up to date

Best Practices

Install Relevant Skills Only

# ✅ Good: Install skills you actually use
/skills-installer --install react-19-expert typescript-strict

# ❌ Bad: Install everything
/skills-installer --install * # Don't do this

Team Collaboration

# Commit skills config to git
git add .claude/skills/
git commit -m "Add React 19 and TypeScript skills"

# Team members get same skills automatically
git pull
# Skills auto-install on first use

Skill Priority

// More specific skills override general skills
{
  "skills": [
    { "name": "typescript-strict", "priority": 10 },
    { "name": "react-19-expert", "priority": 20 }, // Higher priority
    { "name": "next-15-expert", "priority": 30 } // Highest priority
  ]
}

Troubleshooting

Skill Not Activating

# Check skill installation
/skills-installer --installed

# Verify activation triggers
# Edit .claude/skills/[skill]/config.json

# Manually activate for testing
"Use the React 19 expert skill for this task"

Conflicting Skills

# Some skills may conflict
# Example: jest-expert + vitest-expert

# Solution: Uninstall conflicting skill
/skills-installer --uninstall jest-expert

Skill Updates Breaking

# Rollback to previous version
/skills-installer --rollback react-19-expert

# Or pin specific version
/skills-installer --install react-19-expert@1.2.0

• Source repositorygithub.com 2026-07-18T07:31:52+00:00
• Documentationcode.claude.com