npm package: @j0kz/db-schema-mcp
Description: Database Schema Designer MCP - Design schemas, generate migrations, create ER diagrams, optimize indexes. Supports Postgres, MySQL, MongoDB. Works with Claude Code, Cursor, Windsurf, Roo Code, and any MCP-compatible editor.
Author: j0kz
Latest version: 1.1.1

# @j0kz/db-schema-mcp

> Design database schemas with migrations and relationship analysis

[![npm version](https://img.shields.io/npm/v/@j0kz/db-schema-mcp)](https://www.npmjs.com/package/@j0kz/db-schema-mcp)
[![Version](https://img.shields.io/badge/version-1.0.26-blue.svg)](https://github.com/j0KZ/mcp-agents/blob/main/CHANGELOG.md)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)

## 🎉 What's New in v1.0.26

- **📚 Comprehensive Examples**: New example files in [`examples/db-schema/`](../../examples/db-schema/)
- **🎯 Better Error Messages**: Improved validation and error handling
- **✅ Production Ready**: Enhanced schema design, migration generation, and ER diagram creation

## 🚀 Quick Start

### ⭐ Option 1: Install ALL 8 Tools (Recommended)

Get the complete suite with ONE command:

**Claude Code:**

```bash
# Mac/Linux
curl -fsSL https://raw.githubusercontent.com/j0kz/mcp-agents/main/install-all.sh | bash

# Windows (PowerShell)
irm https://raw.githubusercontent.com/j0kz/mcp-agents/main/install-all.ps1 | iex
```

**Cursor/Windsurf:**

```bash
# Download complete config
curl -o ~/.cursor/mcp_config.json https://raw.githubusercontent.com/j0kz/mcp-agents/main/mcp_config_all.json

# Or for Windsurf
curl -o ~/.windsurf/mcp_config.json https://raw.githubusercontent.com/j0kz/mcp-agents/main/mcp_config_all.json
```

### Option 2: Install Only This Tool

**Claude Code:**

```bash
claude mcp add db-schema "npx @j0kz/db-schema-mcp" --scope user
```

**Cursor/Windsurf:** Add to `mcp_config.json`:

```json
{
  "mcpServers": {
    "db-schema": {
      "command": "npx",
      "args": ["@j0kz/db-schema-mcp"]
    }
  }
}
```

### Start Using Immediately

After setup, just chat naturally with your AI:

```
💬 You: "Design a schema for an e-commerce app"
🤖 AI: *Creates schema* Tables: users, products, orders, order_items with relationships, indexes, constraints. Includes migration SQL...

💬 You: "Generate migrations for PostgreSQL"
🤖 AI: *Analyzes changes* Created: 001_create_users.sql, 002_add_indexes.sql, 003_add_constraints.sql with rollback support...

💬 You: "Optimize this database schema"
🤖 AI: Suggestions: Add index on user_id (used in 80% of queries), denormalize order_total, partition orders by date...
```

## ✨ Features

🗄️ **Schema Design** - Create optimized database structures
🔄 **Migration Generation** - SQL migrations with up/down scripts
🔗 **Relationship Analysis** - Detect and fix relationship issues
⚡ **Performance Optimization** - Index suggestions and query optimization

## 📦 Complete @j0kz MCP Suite

Get all 8 professional development tools - install individually or all at once:

```bash
# 🎯 Code Quality Suite
npx @j0kz/smart-reviewer-mcp      # AI code review
npx @j0kz/test-generator-mcp      # Auto-generate tests
npx @j0kz/refactor-assistant-mcp  # Refactoring help

# 🏗️ Architecture & Design
npx @j0kz/architecture-analyzer-mcp  # Architecture analysis
npx @j0kz/api-designer-mcp           # API design
npx @j0kz/db-schema-mcp              # Database schemas

# 📚 Documentation & Security
npx @j0kz/doc-generator-mcp       # Auto-generate docs
npx @j0kz/security-scanner-mcp    # Security scanning
```

**👉 [View complete collection on GitHub](https://github.com/j0KZ/mcp-agents)**

## 🎯 How It Works

1. **Install once** - Run the setup command for your editor
2. **Restart editor** - Reload to activate the MCP
3. **Chat naturally** - Just ask your AI assistant to help
4. **Get results** - The MCP tools work behind the scenes

No configuration files, no complex setup, no API keys needed!

## 🔧 Editor Support

| Editor          | Status          | Notes          |
| --------------- | --------------- | -------------- |
| **Claude Code** | ✅ Full support | Recommended    |
| **Cursor**      | ✅ Full support | Native MCP     |
| **Windsurf**    | ✅ Full support | Built-in MCP   |
| **Roo Code**    | ✅ Full support | MCP compatible |
| **Continue**    | ✅ Full support | MCP plugin     |
| **Zed**         | ✅ Full support | MCP support    |

Any MCP-compatible editor works!

## ❓ Troubleshooting

**MCP not showing up?**

- Restart your editor after installation
- Check: `claude mcp list` (Claude Code) to verify connection

**Commands not working?**

- Make sure Node.js is installed (`node --version`)
- Try reinstalling: Remove and re-add the MCP

**Still stuck?**

- [Open an issue](https://github.com/j0KZ/mcp-agents/issues)
- [Check full documentation](https://github.com/j0KZ/mcp-agents)

## 📄 License

MIT © [j0KZ](https://github.com/j0KZ)

---

**Explore more tools:** [github.com/j0KZ/mcp-agents](https://github.com/j0KZ/mcp-agents) | **npm:** [@j0kz](https://www.npmjs.com/~j0kz)