JIBSN/epo-ops-mcp-server

EPO OPS MCP Server

A server that exposes the European Patent Office's Open Patent Services API as an MCP (Model Context Protocol) server using the fastMCP library.

Features

• MCP-compatible server for accessing EPO OPS services
• Built-in authentication, throttling, and caching
• Automatic API documentation
• Docker support for easy deployment
• Dependency management with uv for fast installation
• Proper validation using Pydantic models

Prerequisites

• Python 3.8+
• EPO OPS API credentials (key and secret)
• uv package manager (optional but recommended)

Installation

Option 1: Using uv (Recommended)

1. Clone the repository:

   git clone <repository-url>
   cd epo-ops-mcp-server
   

2. Install uv if you haven't already:

   pip install uv
   

   Or follow the official installation guide

3. Install dependencies with uv:

   uv sync
   

Usage

1. Set up environment variables: Create a .env file with your EPO OPS credentials:

   # EPO OPS API credentials (required)
   EPO_OPS_KEY=key
   EPO_OPS_SECRET=secret
   
   Server settings (optional)
   SERVER_HOST=0.0.0.0
   SERVER_PORT=8000
   
   # Cache settings (optional)
   CACHE_ENABLED=True
   CACHE_PATH=/var/tmp/epo-ops-server/cache.dbm
   

2. Start the server:

   python main.py
   

   Or with uv:

   uv run python main.py
   

MCP client configuration

"mcpServers": {
    "epo-ops-mcp-server": {
      "command": "uv",
      "args": [
        "run",
        "python",
        "main.py"
      ],
      "cwd": "path to epo-ops-mcp-server",
      "env": {
        "MCP_TRANSPORT_TYPE": "stdio",
        "MCP_LOG_LEVEL": "debug"
      },
      "disabled": false,
      "autoApprove": []
    }
  }

MCP Tools

The server exposes the following tools that can be used by MCP clients:

• get_published_data - Retrieve published patent data
• search_published_data - Search published patent data
• get_family - Retrieve patent family data
• get_legal - Retrieve legal status information
• convert_number - Convert patent number formats
• get_register - Retrieve European Patent Register data
• search_register - Search European Patent Register
• get_image - Retrieve patent images

Number Formats

The EPO OPS API supports different patent number formats:

1. Epodoc Format: A single string that combines country, number, and kind code (e.g., "WO2025160170" or "US5444451A")
2. Docdb Format: Separate fields for country code, number, and kind code (e.g., "WO", "2025160170", "A1")

When using the tools, you can provide patent numbers in either format:

# Epodoc format
{
  "number": "WO2025160170",
  "kind_code": "A1"
}

# Docdb format
{
  "country_code": "WO",
  "number": "2025160170",
  "kind_code": "A1"
}

The server now uses Pydantic models to validate the input data, ensuring that the correct format is used for each type of request. This provides better type safety and clearer error messages when invalid data is provided.

Configuration

The server can be configured using environment variables:

Development

For development, you can install the dev dependencies:

With uv:

uv sync --extra=dev

With pip:

pip install -e .[dev]