Monster Hunter World Helper MCP Server

Monster Hunter World Helper MCP Server

An MCP (Model Context Protocol) server that provides tools and resources for accessing Monster Hunter World game data via the MHW DB API.

Features

Resources

• monster://{id} - Get detailed information about a specific monster
• armor-set://{id} - Get detailed information about a specific armor set

Tools

• find-monster - Search for monsters by name and get their details including weaknesses, locations, and species
• find-weapon-path - Get the complete crafting tree path for a weapon, including all required materials
• find-armor-by-skill - Search for armor pieces that have specific skills

Prompts

• monster-guide - Get comprehensive hunting guides for specific monsters
• farming-guide - Get efficient farming strategies for specific items
• build-planner - Get build recommendations based on weapon type and playstyle

Installation

1. Clone the repository
2. Install dependencies:

npm install

3. Start the server:

npm run dev

The server will start in stdio mode and connect to Roo automatically if the .roo/mcp.json configuration is present.

Usage Examples

Finding Monster Information

// Example tool usage through Roo
const result = await tool.use("find-monster", { name: "Rathalos" });

Response will include:

• Monster name and type
• Species information
• Locations where it can be found
• Element/status weaknesses
• Description

Getting Weapon Crafting Path

// Example tool usage through Roo
const result = await tool.use("find-weapon-path", {
  name: "Defender Greatsword",
});

Response will include:

• Complete upgrade path
• Required materials for each step
• Material sources/descriptions

Finding Armor by Skill

// Example tool usage through Roo
const result = await tool.use("find-armor-by-skill", { skill: "Attack Boost" });

Response will include:

• List of matching armor pieces
• Armor stats and rarity
• Skill levels
• Crafting requirements

Getting a Monster Hunting Guide

// Example prompt usage through Roo
const result = await prompt.use("monster-guide", { monster: "Nergigante" });

Response will provide:

1. Weaknesses and resistances
2. Recommended weapons/elements
3. Important items to bring
4. Key mechanics to watch for
5. Recommended armor skills

API Details

Resource Endpoints

Monster Resource (monster://{id})

Returns detailed monster information from the MHW DB API.

Armor Set Resource (armor-set://{id})

Returns detailed armor set information from the MHW DB API.

Tool Parameters

find-monster

• name (string): Full or partial monster name to search for

find-weapon-path

• name (string): Full or partial weapon name to search for

find-armor-by-skill

• skill (string): Full or partial skill name to search for

Prompt Parameters

monster-guide

• monster (string): Name of the monster to get a guide for

farming-guide

• item (string): Name of the item to get farming strategies for

build-planner

• weapon (string): Type of weapon for the build
• playstyle (string): Desired playstyle (e.g., "defensive", "DPS", etc.)

Error Handling

The server includes comprehensive error handling and logging:

• API connection errors
• Resource not found errors
• Invalid parameter errors

All errors are properly logged to the console with detailed information to help with debugging.

Development

The server is built with TypeScript and uses:

• Model Context Protocol (MCP) SDK
• Zod for parameter validation
• Fetch API for MHW DB API requests
• In-memory caching for API responses

To modify or extend the server:

1. Make changes to mhw-mcp-server.ts
2. The server will automatically reload when using npm run dev

Contributing

Contributions are welcome! Please feel free to submit pull requests with new features, fixes, or improvements.

License

MIT License - feel free to use this project as you wish.