MCP Expert Server

A Model Context Protocol server that provides intelligent query generation and documentation assistance using Claude AI. The server analyzes your API documentation and provides two main tools:

create-query: Generates queries based on natural language requests
documentation: Provides relevant documentation information based on questions

Prerequisites

Node.js >= 18
An Anthropic API key for Claude

Installation

Clone the repository
Install dependencies:

npm install

Create a .env file with your Anthropic API key:

ANTHROPIC_API_KEY=your_api_key_here

Setup

Before running the server, you need to:

Build the project and run the setup script:

npm run build
npm run setup

This will:

Create the required directories (docs/ and prompts/)
Create default prompt files
Generate an initial service description

Add your API documentation files to the docs/ directory (supports .txt, .md, and .json files)
Optionally customize the prompts in the prompts/ directory:
- system-prompt.txt: Main system prompt for Claude
- tool-metadata.txt: Additional context for tool descriptions
- query-metadata.txt: Additional context for query generation
- service-description.txt: Auto-generated service description

Usage

Standalone Server

Start the server:

npm start

The server exposes two tools via the Model Context Protocol:

create-query: Generate a query based on natural language request
{ "name": "create-query", "arguments": { "request": "Find all users who signed up in the last week" } }
documentation: Get information from the documentation
{ "name": "documentation", "arguments": { "request": "How do I authenticate API requests?" } }

Claude Desktop Integration

Add this configuration to your Claude Desktop config file:

{
  "mcpServers": {
    "expert": {
      "command": "node",
      "args": ["/ABSOLUTE/PATH/TO/expert-server/build/index.js"],
      "env": {
        "ANTHROPIC_API_KEY": "your_api_key_here"
      }
    }
  }
}

Replace /ABSOLUTE/PATH/TO/expert-server with the actual absolute path to your server installation.
Restart Claude Desktop.

Directory Structure

.
├── docs/                  # Your API documentation files
├── prompts/              # System prompts and metadata
│   ├── system-prompt.txt    # Main system prompt
│   ├── tool-metadata.txt    # Tool description context
│   ├── query-metadata.txt   # Query generation context
│   └── service-description.txt  # Generated service description
├── src/                  # Source code
│   ├── index.ts            # Entry point
│   ├── server.ts           # MCP server implementation
│   └── services/           # Core services
│       └── expertService.ts  # Claude integration
└── package.json

Development

Build the project:

npm run build

The server uses TypeScript and follows a modular architecture
All Claude interactions are handled by the ExpertService class
Debug logs are written to stderr with [DEBUG] prefix

Troubleshooting

If you encounter connection issues:

Ensure you've run the setup script:

npm run setup

Check that all required files exist in the prompts/ directory
Verify your ANTHROPIC_API_KEY is correctly set
Use absolute paths in your Claude Desktop config
Check the debug logs (written to stderr)

Environment Variables

ANTHROPIC_API_KEY: Your Anthropic API key (required)

License

MIT