GeoIP MCP Server

A Model Context Protocol (MCP) server providing IP geolocation and ASN lookup services using MaxMind GeoIP2 databases.

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Features

• Single & Bulk IP Geolocation: Lookup for IPv4 and IPv6 addresses.
• ASN Information: Retrieve Autonomous System Number and organization.
• Comprehensive Location Data: Country, city, subdivision, postal code, latitude/longitude, and network info.
• Distance Calculation: Compute distance between two coordinates.
• Caching: In-memory cache for fast repeated lookups.
• Flexible Output: JSON, summary, and CSV formats.
• Health Checks & Performance Monitoring: Tools for server and database health.
• MCP Protocol: Compatible with MCP clients.

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Setup

1. Install Dependencies

pip install -r requirements.txt

2. Download MaxMind GeoIP2 Databases

• Register for a free MaxMind account: https://www.maxmind.com/
• Download GeoLite2-City.mmdb and GeoLite2-ASN.mmdb.
• Place them in a known directory (e.g., ~/Downloads/).

3. Set Environment Variables

export GEOIP_CITY_DB="~/Downloads/GeoLite2-City.mmdb"
export GEOIP_ASN_DB="~/Downloads/GeoLite2-ASN.mmdb"
# Optional:
export GEOIP_COUNTRY_DB="~/Downloads/GeoLite2-Country.mmdb"
export GEOIP_CACHE_TTL=3600

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Usage

Run the Server

python server.py

The server communicates via MCP protocol (stdio by default).

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Available Tools

1. geolocate_ip

Get geolocation for a single IP.

Parameters:

• ip_address (string, required)
• include_asn (boolean, default: true)
• output_format (json|summary|csv, default: json)
• use_cache (boolean, default: true)

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2. geolocate_multiple_ips

Batch geolocation for multiple IPs.

Parameters:

• ip_addresses (array of strings, required)
• include_asn (boolean, default: true)
• output_format (json|summary|csv, default: json)
• use_cache (boolean, default: true)

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3. get_asn_info

Get ASN info for an IP.

Parameters:

• ip_address (string, required)

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4. calculate_distance

Calculate distance between two coordinates.

Parameters:

• lat1, lon1 (float, required): Point 1
• lat2, lon2 (float, required): Point 2
• unit (km|mi, default: km)

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5. server_management

Server operations.

Parameters:

• action (clear_cache|get_stats|reload_databases, required)

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Example Output

{
  "ip_address": "203.0.113.0",
  "location": {
    "country": {"iso_code": "US", "name": "United States"},
    "city": {"name": "Minneapolis"},
    "location": {"latitude": 44.9733, "longitude": -93.2323}
  },
  "asn": {
    "autonomous_system_number": 1221,
    "autonomous_system_organization": "Telstra Pty Ltd"
  }
}

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Error Handling

• Invalid IP address formats
• Missing or unreadable database files
• IP not found in database
• Network/database errors

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Health & Monitoring

• Use health_check.py for system/database health.
• Use performance_monitor.py for performance metrics.

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Docker

A Dockerfile and docker-compose.yaml are provided.

docker-compose up --build

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License

This project is licensed under the GNU GPL v3.

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Credits