CopilotCustomizer

Generate tech-stack-specific AI customization in 5 minutes

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What is CopilotCustomizer?

A toolbox framework that generates AI customization assets for ANY repository. Built on the Agent Skills open standard for cross-platform portability.

Your Project + CopilotCustomizer = AI that understands YOUR codebase

Key Features

Feature	Description
Cross-Platform Skills	Work in VS Code, GitHub Copilot CLI, Claude, Cursor
VS Code Agents	Specialized AI experts for your tech stack
Custom Instructions	Project coding standards auto-applied to matching files
Prompt Templates	Slash commands for common development tasks
Zero Lock-in	Skills use open standard - take them anywhere

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Quick Start

1. Add to Workspace

File → Add Folder to Workspace → Select CopilotCustomizer

2. Generate Assets

Open Copilot Chat (Ctrl+Shift+I) and run:

/BootstrapRepo REPOSITORY_PATH: "/path/to/your-project"

3. Confirm

Review the plan, then type: confirm

Result: Complete customization in your-project/.github/ in ~5 minutes.

See QUICKSTART.md for the full walkthrough

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Skills: Cross-Platform AI Capabilities

Skills are the foundation - portable capabilities that work across multiple AI platforms.

Skill	Purpose	Works In
repository-analysis	Codebase structure & tech stack detection	VS Code, CLI, Claude, Cursor
copilot-asset-design	Asset architecture & validation	VS Code, CLI, Claude, Cursor
technical-documentation	Change summaries & API docs	VS Code, CLI, Claude, Cursor

Why Skills Matter: Create once, use everywhere. Same skill works in VS Code, command line, Claude Desktop, or Cursor.

Learn more: SKILLS-MIGRATION.md

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Asset Types

.github/
├── skills/           # Cross-platform capabilities (agentskills.io)
├── agents/           # VS Code AI specialists
├── instructions/     # Coding standards (auto-applied)
├── prompts/          # Slash command templates
└── templates/        # Document formats

What Gets Generated

Asset Type	Count	Example
Skills	3-5	api-testing/SKILL.md
Agents	3-5	APIExpert.agent.md
Instructions	2-4	TestingPatterns.instructions.md
Prompts	2-3	GenerateEndpoint.prompt.md

Assets are tailored to your tech stack - React, Python, .NET, Go, Rust, PHP, and more.

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Key Commands

# Full repository setup
/BootstrapRepo REPOSITORY_PATH: "/path"

# Analyze existing project
/RepoReview TARGET_PATH: "/path"

# Create individual assets
/NewSkill SKILL_NAME: "api-testing", PURPOSE: "Jest API testing"
/NewCopilotAgent AGENT_NAME: "DatabaseExpert", DOMAIN: "PostgreSQL"
/NewInstructions DOMAIN: "Testing", APPLY_TO: "**/*.test.ts"

# Maintenance
/AssetOptimization TARGET_PATH: "/path/.github"
/HarmonizeAssets
/WorkflowIntegrityCheck STRICT: "true"

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How It Works

┌─────────────────────────────────────────────────────────┐
│  VS Code Workspace (Multi-Root)                         │
├─────────────────────────────────────────────────────────┤
│                                                         │
│  ┌─────────────────┐    ┌─────────────────────────────┐ │
│  │ Your Project    │    │ CopilotCustomizer           │ │
│  │                 │    │ (The Toolbox)               │ │
│  │ src/            │    │                             │ │
│  │ tests/          │◄───│ Generates assets INTO       │ │
│  │ .github/        │    │ your project, not copied    │ │
│  │   skills/       │    │                             │ │
│  │   agents/       │    │ Close when done generating  │ │
│  │   instructions/ │    │                             │ │
│  └─────────────────┘    └─────────────────────────────┘ │
│                                                         │
└─────────────────────────────────────────────────────────┘

Pattern: Add as workspace #2 → Generate into target repo → Close when done

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Documentation

Document	Purpose
QUICKSTART.md	5-minute setup guide
SKILLS-MIGRATION.md	Agent Skills deep dive
EXAMPLES.md	Real-world tech stack examples
HOW-TO.md	Complete command reference
AGENTS.md	Architecture & asset inventory
MULTI-WORKSPACE.md	Setup patterns

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Framework Inventory

Skills (3)

Cross-platform capabilities using agentskills.io standard.

Agents (6)

VS Code workflow orchestration:

• BootstrapRepo - Repository setup entry point
• AssetPlanner - Recommendation engine
• AssetGenerator - Multi-asset creation
• ChangeExecutor - File operations
• VerificationAgent - Schema validation
• CopilotCustomizer - Main interactive mode

Instructions (9)

Generation and quality patterns for asset creation.

Prompts (15)

Slash commands for workflows and asset generation.

Templates (7)

Standardized document formats.

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Best Practices

DO:

• Use absolute paths in REPOSITORY_PATH
• Keep CopilotCustomizer in separate workspace folder
• Close CopilotCustomizer when not generating
• Commit .github/ folder to share with team

DON'T:

• Copy CopilotCustomizer into your project
• Modify framework files directly
• Use relative paths (can be ambiguous)

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Requirements

• VS Code 1.106+ with GitHub Copilot extension
• GitHub Copilot subscription (Individual/Business/Enterprise)
• No additional dependencies - pure Markdown framework

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Contributing

1. Fork the repository
2. Create a feature branch
3. Use /UpdateCopilotCustomizer for changes
4. Submit a pull request

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Resources

• VS Code Copilot Customization
• Agent Skills Standard
• GitHub Awesome Copilot
• GitHub Copilot Docs

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License

MIT License - see LICENSE

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CopilotCustomizer - Enterprise-ready AI customization framework
Skills-first | Cross-platform | Zero dependencies