N2YO Satellite Tracker MCP Server

A Model Context Protocol (MCP) server that provides access to N2YO satellite tracking data, including TLE (Two-Line Element) data, satellite positions, and pass predictions.

Overview

This MCP server integrates with the N2YO.com API to provide satellite tracking capabilities. N2YO is a real-time satellite tracking service that offers comprehensive data on satellites, including military, weather, GPS, amateur radio, and commercial satellites.

Key Features

• Natural Language Queries: Ask questions like "What satellites will be over France at 6:00 tonight?"
• TLE Data Access: Get Two-Line Element data for any satellite by NORAD ID
• Category-based Search: Find satellites by type (military, weather, GPS, etc.)
• Country Filtering: Filter satellites by country or organization
• Real-time Positioning: Get current satellite positions relative to observer
• Pass Predictions: Predict when satellites will be visible from your location
• Overhead Tracking: Find all satellites currently above a specific location

Installation

git clone <repository-url>
cd n2yo-satellite-tracker-mcp
npm install
npm run build

Setup

1. Get N2YO API Key: Register at N2YO.com and generate an API key from your profile
2. Configure the server: Use the set_n2yo_api_key tool to configure your API key
3. Start tracking: Use the various tools to track satellites

Usage

npm start

The server connects to MCP-compatible clients via stdio transport.

Tools Available

set_n2yo_api_key

Configure your N2YO API key for accessing satellite data.

Parameters:

• apiKey (required): Your N2YO API key

query_satellites_natural

Answer natural language questions about satellites (🌟 NEW FEATURE).

Parameters:

• query (required): Natural language query like "What satellites will be over France at 6:00 tonight?"
• categoryFilter (optional): Filter by category: "all", "military", "weather", "gps", "amateur", "starlink", "space-stations"

Supported Query Patterns:

• Location: Countries (France, Germany, USA), cities (Paris, London, New York)
• Time: "tonight", "6:00 PM", "tomorrow morning", "in 2 hours", "now"
• Categories: Can be specified in query or categoryFilter parameter

get_satellite_tle

Get Two-Line Element (TLE) data for a specific satellite.

Parameters:

• noradId (required): NORAD catalog number (e.g., "25544" for ISS)

get_satellites_by_category

Browse satellites by predefined categories.

Parameters:

• category (required): One of: "military", "weather", "gps", "navigation", "amateur", "geostationary", "noaa", "starlink", "space-stations", "earth-resources"
• country (optional): Country code filter (e.g., "usa", "china", "russia")

get_satellite_position

Get current position of a satellite relative to an observer location.

Parameters:

• noradId (required): NORAD catalog number
• observerLat (required): Observer latitude (-90 to 90)
• observerLng (required): Observer longitude (-180 to 180)
• observerAlt (optional): Observer altitude in meters (default: 0)
• seconds (optional): Seconds in future for prediction (0-300, default: 0)

get_visual_passes

Get upcoming visual passes of a satellite for an observer location.

Parameters:

• noradId (required): NORAD catalog number
• observerLat (required): Observer latitude (-90 to 90)
• observerLng (required): Observer longitude (-180 to 180)
• observerAlt (optional): Observer altitude in meters (default: 0)
• days (optional): Days to look ahead (1-10, default: 10)
• minVisibility (optional): Minimum visibility in seconds (1-300, default: 300)

get_satellites_above

Get all satellites currently above an observer location.

Parameters:

• observerLat (required): Observer latitude (-90 to 90)
• observerLng (required): Observer longitude (-180 to 180)
• observerAlt (optional): Observer altitude in meters (default: 0)
• searchRadius (optional): Search radius in degrees (1-90, default: 70)
• categoryFilter (optional): Filter by category or "all" (default: "all")

Resources Available

n2yo://api/status

Current N2YO API configuration and usage status including:

• API key configuration status
• Transaction counts for each endpoint
• Daily API limits

n2yo://categories/list

Available satellite categories for searching:

• Military satellites
• Weather satellites
• GPS operational satellites
• Amateur radio satellites
• And more...

n2yo://countries/list

Available countries and organizations for satellite filtering.

n2yo://limits/info

Information about N2YO API transaction limits and current usage.

Natural Language Query Capabilities

The query_satellites_natural tool can understand and parse various natural language patterns:

Supported Locations (100+ countries and cities)

• Countries: France, Germany, USA, China, Russia, Japan, UK, Canada, Australia, etc.
• Major Cities: Paris, London, New York, Tokyo, Berlin, Moscow, Sydney, etc.
• Query Examples:
  • "over France"
  • "above Germany"
  • "in New York"

Supported Time Expressions

• Relative Times: "tonight", "tomorrow", "now", "right now"
• Specific Times: "6:00 PM", "18:00", "6:00 tonight"
• Future Times: "in 2 hours", "tomorrow morning"
• Query Examples:
  • "at 6:00 tonight"
  • "tomorrow morning"
  • "in 3 hours"

Example Natural Language Queries

• "What satellites will be over France at 6:00 tonight?"
• "Show me military satellites above Germany now"
• "What Starlink satellites are over New York right now?"
• "Which satellites will be above Tokyo tomorrow morning?"
• "Find weather satellites over London in 2 hours"

Satellite Categories

The server supports the following satellite categories:

• military (30): Military satellites
• weather (3): Weather satellites
• gps (20): GPS operational satellites
• navigation (24): Navy Navigation Satellite System
• amateur (18): Amateur radio satellites
• geostationary (10): Geostationary satellites
• noaa (4): NOAA satellites
• starlink (52): Starlink constellation
• space-stations (2): International Space Station and others
• earth-resources (6): Earth observation satellites

Example Usage

Configure API Key

{
  "tool": "set_n2yo_api_key",
  "arguments": {
    "apiKey": "YOUR-N2YO-API-KEY"
  }
}

Natural Language Queries (🌟 NEW)

{
  "tool": "query_satellites_natural",
  "arguments": {
    "query": "What satellites will be over France at 6:00 tonight?"
  }
}

{
  "tool": "query_satellites_natural",
  "arguments": {
    "query": "Show me military satellites above Germany now",
    "categoryFilter": "military"
  }
}

{
  "tool": "query_satellites_natural",
  "arguments": {
    "query": "What Starlink satellites are over New York right now?",
    "categoryFilter": "starlink"
  }
}

Get ISS TLE Data

{
  "tool": "get_satellite_tle",
  "arguments": {
    "noradId": "25544"
  }
}

Find Military Satellites

{
  "tool": "get_satellites_by_category",
  "arguments": {
    "category": "military",
    "country": "usa"
  }
}

Track ISS Position

{
  "tool": "get_satellite_position",
  "arguments": {
    "noradId": "25544",
    "observerLat": 40.7128,
    "observerLng": -74.0060,
    "observerAlt": 0
  }
}

Get ISS Pass Predictions

{
  "tool": "get_visual_passes",
  "arguments": {
    "noradId": "25544",
    "observerLat": 40.7128,
    "observerLng": -74.0060,
    "days": 7
  }
}

Find Satellites Overhead

{
  "tool": "get_satellites_above",
  "arguments": {
    "observerLat": 40.7128,
    "observerLng": -74.0060,
    "searchRadius": 80,
    "categoryFilter": "military"
  }
}

API Limits

N2YO provides free API access with the following daily limits:

• TLE requests: 1,000 per day
• Position requests: 1,000 per day
• Visual passes: 100 per day
• Radio passes: 100 per day
• Above requests: 100 per day

Development

# Watch mode for development
npm run dev

# Build for production
npm run build

# Start the server
npm start

Popular Satellites

Some commonly tracked satellites you can use for testing:

• ISS: 25544
• Hubble Space Telescope: 20580
• GPS satellites: Use category "gps"
• Starlink: Use category "starlink"
• Weather satellites: Use category "weather"

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request

License

MIT License - see LICENSE file for details.

Related Links

• N2YO.com - Real-time satellite tracking
• N2YO API Documentation
• Model Context Protocol - Learn about MCP
• NORAD Catalog - Satellite catalog information