🏎️ Pimp My Ride MCP Server

A Model Context Protocol (MCP) server for car customization and racing. Build and customize your dream ride with natural language through ChatGPT or Claude!

Photo: CC BY-SA 2.0, via Wikimedia Commons

Note: This project is an homage to the MTV show Pimp My Ride hosted by Xzibit. Not affiliated with or endorsed by MTV.

Features

• 🎨 Car Customization - Colors, wheels, body kits, spoilers, exhausts, decals, and underglow
• 🏎️ Driver Profiles - Choose your racing persona (RoadRage, SpeedDemon, CoolCalmCollected, etc.)
• 💾 Build Management - Save, load, and manage multiple car builds
• 📊 Performance Scoring - Get calculated performance scores for your builds
• 🔒 Pomerium Authentication - Secure identity-aware access with Pomerium proxy
• 🗄️ Pluggable Storage - SQLite by default, extensible to Redis, PostgreSQL, DynamoDB

Security

⚠️ This MCP server has no built-in authentication or authorization. It reads identity from HTTP headers and trusts them implicitly.

For production deployments, secure this server behind Pomerium, an AI gateway that provides:

• 🔐 Centralized Authentication - OAuth/OIDC integration with your identity provider
• 🛡️ Fine-grained Authorization - Policy-based access control at the tool and method level
• 🔑 Automatic Token Management - Handles OAuth token refresh transparently
• 📊 Observability - Detailed logs of AI agent interactions, tool calls, and parameters
• 🌐 Secure Gateway - Expose internal MCP servers safely to AI agents

Pomerium enables you to define policies like:

• Which users can access which tools
• Rate limiting per user or group
• Audit logging of all tool calls
• Dynamic access control based on user attributes

Architecture with Pomerium

sequenceDiagram
    participant User as AI Agent/User
    participant Pomerium as Pomerium Gateway
    participant MCP as Pimp My Ride MCP Server
    participant Storage as SQLite Storage

    User->>Pomerium: MCP Request
    Pomerium->>Pomerium: Authenticate User (OAuth/OIDC)
    Pomerium->>Pomerium: Authorize Tool Access (Policy Check)
    Pomerium->>MCP: Forward Request + Identity Headers
    Note over Pomerium,MCP: X-Pomerium-Claim-Sub<br/>X-Pomerium-Claim-Email<br/>X-Pomerium-Claim-Name
    MCP->>MCP: Extract User Identity
    MCP->>Storage: Read/Write Build Data
    Storage-->>MCP: Data Response
    MCP-->>Pomerium: MCP Response
    Pomerium-->>User: MCP Response

Learn more: Pomerium MCP Documentation

Quick Start

Installation

npm install

Configuration

Create a .env file (see .env.example):

# Server Configuration
HOST=0.0.0.0
PORT=3000
NODE_ENV=development
LOG_LEVEL=info

# Storage Configuration
STORAGE_BACKEND=sqlite
SQLITE_DB_PATH=./data/pimp-my-ride.db

Development

npm run dev

Production

npm run build
npm start

Available Tools

Car Customization

getCurrentBuild

Retrieve or create your active car build with all customizations.

updateCarConfig

Update car attributes:

• color - Primary color (red, blue, green, yellow, orange, purple, pink, black, white, silver, gold, cyan, magenta, lime)
• secondaryColor - Secondary/accent color
• wheels - Wheel type (stock, sport, racing, offroad, chrome, neon, spinner)
• bodyKit - Body kit style (stock, sport, racing, drift, luxury, rally, muscle)
• decal - Decal/livery (none, racing_stripes, flames, tribal, camo, carbon_fiber, checkered, sponsor, custom)
• spoiler - Spoiler type (none, stock, sport, racing, gt_wing, ducktail)
• exhaust - Exhaust system (stock, sport, racing, dual, quad, side_exit)
• underglow - Underglow lighting (none, red, blue, green, purple, rainbow, white)
• performance - Performance stats (power, grip, aero, weight: 0-100)

updateDriverProfile

Set driver persona and nickname:

• persona - Driver personality: CoolCalmCollected, RoadRage, SpeedDemon, Cautious, ShowOff, Tactical, Wildcard
• nickname - Driver nickname (1-50 characters)

getCustomizationOptions

Get all available customization options for car parts and driver personas.

getPersonaInfo

Get detailed information about driver personas including racing style, strengths, and weaknesses.

Build Management

saveBuild

Save the current car build under a specific name.

loadBuild

Load a saved car build and make it active.

listBuilds

List all saved car builds with pagination support.

deleteBuild

Delete a saved car build (cannot delete active build).

getBuildDetails

Get detailed information about a build including calculated performance score.

Architecture

Storage Layer

The KV storage abstraction provides:

• Namespaces - Logical data isolation
• TTL Expiration - Automatic cleanup of expired entries
• CAS Versioning - Compare-and-Set for concurrent updates
• Pagination - Cursor-based pagination for large datasets

Default implementation uses SQLite with WAL mode for better concurrency.

Authentication

Pomerium authentication resolves user identity from HTTP headers:

• X-Pomerium-Claim-Sub - User ID
• X-Pomerium-Claim-Email - Email address
• X-Pomerium-Claim-Name - Display name
• X-Pomerium-JWT-Assertion - JWT token (fallback)

In development mode without Pomerium, the server generates anonymous session-based user IDs.

Data Model

Build Structure:

{
  id: string,
  name?: string,
  car: {
    color, secondaryColor, wheels, bodyKit,
    decal, spoiler, exhaust, underglow,
    performance: { power, grip, aero, weight }
  },
  driver: {
    persona, nickname?
  },
  createdAt: number,
  updatedAt: number
}

API Endpoints

MCP Protocol

• POST /mcp - MCP tool calls
• GET /mcp - Server info

Health Check

• GET /health - Storage health status

Environment Variables

| Variable | Description | Default | | ----------------- | --------------------------------------------- | ------------------------ | | HOST | Server host/interface to bind | 0.0.0.0 | | PORT | Server port | 3000 | | NODE_ENV | Environment (development/production/test) | development | | LOG_LEVEL | Logging level (error/warn/info/debug) | info | | STORAGE_BACKEND | Storage type (sqlite/redis/postgres/dynamodb) | sqlite | | SQLITE_DB_PATH | SQLite database file path | ./data/pimp-my-ride.db | | SQLITE_VERBOSE | Enable SQL query logging | false |

Development

Scripts

npm run dev          # Development with watch mode
npm run build        # Build for production
npm start            # Start production server
npm run lint         # Check code quality
npm run lint:fix     # Fix linting issues
npm run format       # Format code with Prettier
npm test             # Run tests

Project Structure

src/
├── index.ts              # Main server entry point
├── config.ts             # Environment configuration
├── logger.ts             # Structured logging
├── auth/
│   └── pomerium.ts       # Pomerium authentication
├── domain/
│   └── models.ts         # Car and driver models
├── storage/
│   ├── kv.ts            # KV storage interface
│   ├── sqlite.ts        # SQLite implementation
│   ├── factory.ts       # Storage factory
│   └── index.ts         # Exports
├── tools/
│   └── builds.ts        # Build management tools
└── lib/
    ├── utils.ts         # MCP response helpers
    └── errors.ts        # Error formatting

Deployment

Docker

Available on Docker Hub: nickytonline/pimp-my-ride-mcp

# Pull from Docker Hub
docker pull nickytonline/pimp-my-ride-mcp

# Or build locally
docker build -t pimp-my-ride-mcp .

# Run
docker run -p 3000:3000 -v ./data:/app/data pimp-my-ride-mcp

With Pomerium (Recommended for Production)

Deploy behind Pomerium for secure, policy-based access control:

# pomerium-config.yaml
routes:
  - from: https://pimp-my-ride.example.com
    to: http://localhost:3000
    policy:
      - allow:
          and:
            - email:
                is: user@example.com
    # Optional: Fine-grained tool access control
    mcp_allow_tools:
      - getCurrentBuild
      - updateCarConfig
      - updateDriverProfile

See Pomerium MCP docs for advanced configuration including:

• Tool-level authorization
• User/group-based access control
• Rate limiting
• OAuth upstream integration

Roadmap

Phase 2 - AI Assistance

• [ ] randomizeBuild - Generate random themed builds
• [ ] suggestUpgrades - AI-powered upgrade recommendations
• [ ] generateLivery - Color scheme suggestions

Phase 3 - Racing

• [ ] simulateRace - Race simulation
• [ ] getLeaderboard - Global rankings
• [ ] Race results persistence

License

MIT

Documentation

• Product Requirements Document (PRD) - Detailed architecture, data models, and implementation phases
• Repository Guidelines (AGENTS.md) - Development conventions, testing, and contribution guidelines

About Pomeranian Kart

Pomeranian Kart is a racing game that uses this MCP server for car customization. Players interact with the game through natural language, building and customizing their dream cars before racing.

References

• Model Context Protocol
• Pomerium Documentation
• MCP Documentation