League MCP Server

See the top-level README for full instructions and usage.

Project Structure

mcp-server/
├── main.py                           # Main entry point with enhanced registrations
├── services/                         # Business logic and external integrations
│   ├── __init__.py
│   └── riot_api_service.py          # Riot API HTTP client and constants
├── utils/                           # Helper functions and utilities
│   ├── __init__.py
│   └── formatters.py                # Enhanced response formatting functions
├── primitives/                      # MCP primitives (Tools, Resources, Prompts)
│   ├── __init__.py
│   ├── tools/                       # MCP Tools organized by API endpoint
│   │   ├── __init__.py
│   │   ├── account_tools.py         # Riot Account API tools
│   │   ├── summoner_tools.py        # LoL Summoner API tools
│   │   ├── spectator_tools.py       # LoL Spectator API tools
│   │   ├── champion_tools.py        # LoL Champion API tools
│   │   ├── clash_tools.py           # LoL Clash API tools
│   │   ├── league_tools.py          # LoL League API tools
│   │   ├── status_tools.py          # LoL Status API tools
│   │   ├── match_tools.py           # ⚡ LoL Match API tools (NEW)
│   │   ├── challenges_tools.py      # ⚡ LoL Challenges API tools (NEW)
│   │   └── tournament_tools.py      # ⚡ LoL Tournament API tools (NEW)
│   ├── resources/                   # ⚡ MCP Resources for static data (NEW)
│   │   ├── __init__.py
│   │   ├── data_dragon_resources.py # ⚡ Data Dragon static data access
│   │   └── game_constants_resources.py # ⚡ Game constants and routing info
│   └── prompts/                     # ⚡ MCP Prompts for workflows (NEW)
│       ├── __init__.py
│       └── common_workflows.py      # ⚡ Common use case workflows
└── league_original.py               # Original monolithic implementation (backup)

Enhanced API Coverage ⚡

🔧 Tools (35+ API Endpoints)

Account API (account_tools.py)

• Get account by PUUID
• Get account by Riot ID (gameName#tagLine)
• Get active shard for a player
• Get active region for a player

Summoner API (summoner_tools.py)

• Get summoner by PUUID
• Get summoner by account ID
• Get summoner by summoner ID
• Get summoner by RSO PUUID

Match API (match_tools.py) ⚡ NEW

• Get match history IDs by PUUID with filtering options
• Get detailed match information and player statistics
• Get match timeline with events and frame-by-frame data

Challenges API (challenges_tools.py) ⚡ NEW

• Get all challenge configuration data
• Get specific challenge configuration details
• Get challenge leaderboards (Master/Grandmaster/Challenger)
• Get player challenge progress and achievements
• Get challenge percentile data across all challenges

Tournament API (tournament_tools.py) ⚡ NEW

• Register as tournament provider (Production key required)
• Create tournaments for organized play
• Generate tournament codes for matches
• Get tournament code details and participants
• Monitor tournament lobby events

Spectator API (spectator_tools.py)

• Get active game information
• Get featured games

Champion API (champion_tools.py)

• Get champion rotation (free-to-play champions)

Clash API (clash_tools.py)

• Get Clash player registrations
• Get Clash team information
• Get Clash tournaments
• Get tournament by team ID
• Get tournament by ID

League API (league_tools.py)

• Get challenger/grandmaster/master leagues
• Get league entries by PUUID/summoner ID
• Get league by ID
• Get league entries by division

Status API (status_tools.py)

• Get platform status and maintenance information

📚 Resources (Static Game Data)

Data Dragon Resources (data_dragon_resources.py) ⚡

• ddragon://versions: All available Data Dragon versions
• ddragon://languages: Supported localization languages
• ddragon://champions: All champions summary data
• ddragon://champion/{id}: Detailed champion information
• ddragon://items: Complete items database
• ddragon://summoner_spells: Summoner spells data

Game Constants (game_constants_resources.py) ⚡

• constants://queues: Queue types and IDs reference
• constants://routing: Platform/regional routing guide

🚀 Prompts (Workflow Automation)

Common Workflows (common_workflows.py) ⚡

• find_player_stats: Complete player analysis workflow
• tournament_setup: Tournament organization guide with compliance

Setup

Installation

Option 1: Install from PyPI (Recommended)

pip install league-mcp-server

Option 2: Install from Source

git clone https://github.com/your-username/League-MCP.git
cd League-MCP/mcp-server
pip install -e .

Configuration

1. Set your Riot API key as an environment variable:

   RIOT_API_KEY=your_api_key_here
   

2. Run the server:

   Transport Options

   The server supports two transport types for different integration scenarios:

   stdio (Default) - For the provided MCP client and Claude Desktop Integration

   league-mcp-server
   # or explicitly
   league-mcp-server --transport stdio
   

   sse - For Web-Based Integrations

   league-mcp-server --transport sse
   

   Transport Details

   • stdio: Standard input/output transport

     • Used for direct integration with MCP clients like Claude Desktop
     • Processes requests via stdin and responds via stdout
     • Default option for most use cases

   • sse: Server-Sent Events transport

     • Used for web-based integrations and HTTP connections
     • Provides real-time communication over HTTP
     • Suitable for web applications and browser-based clients

   Command Line Help

   league-mcp-server --help
   

   Development Mode

   If you're developing or running from source:

   python main.py [--transport {stdio,sse}]
   

New Capabilities ⚡

🔍 Comprehensive Player Analysis

• Complete match history analysis with detailed statistics
• Challenge progression tracking and leaderboard positions
• Cross-referenced champion mastery and performance data
• Automated player profile generation with insights

🏆 Tournament Organization Support

• Full tournament provider registration workflow
• Tournament code generation and management
• Real-time lobby event monitoring
• Match result callback handling (Production key required)

📊 Static Game Data Access

• Champion abilities, stats, and lore from Data Dragon
• Complete items database with costs and effects
• Summoner spells and their cooldowns
• Game constants (queues, maps, seasons) for reference

🚀 Workflow Automation

• Pre-built prompts for common analysis tasks
• Step-by-step tournament setup guidance
• Player improvement recommendation workflows
• Champion and team composition analysis guides

🎯 Advanced Features

• Multi-language support for game data
• Regional routing optimization
• Challenge system integration
• Ranked tier and division tracking

Architecture

The project follows a modular architecture:

• Services: Handle external API communication and business logic
• Utils: Provide formatting and helper functions
• Primitives: Define MCP tools, resources, and prompts organized by functionality
  • Tools: API endpoint wrappers (35+ tools across 10 APIs)
  • Resources: Static data access (Data Dragon, game constants)
  • Prompts: Workflow automation and analysis guides
• Main: Entry point that registers all components and starts the server

Each API endpoint category is separated into its own file with a registration function that adds all related tools to the MCP server.

Compliance & Best Practices

This server implements Riot Games API best practices:

• Rate Limiting: Proper rate limit handling and backoff strategies
• Security: API key protection and HTTPS-only communication
• Tournament Policies: Full compliance with tournament organization requirements
• Data Usage: Adherence to Riot's developer API policies
• Routing: Correct platform and regional routing for optimal performance