{
  "markdown": "[![npm version](https://img.shields.io/npm/v/celestialnode-mcp.svg)](https://www.npmjs.com/package/celestialnode-mcp) [![MCP Registry](https://img.shields.io/badge/MCP-Registry-blue)](https://registry.modelcontextprotocol.io/servers/io.github.christerso/celestial-node) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)\n\n# Celestial Node MCP\n\nAn MCP server for real-time space data from [Celestial Node](https://celestialnode.com).\n\nGives AI assistants access to 18 read-only tools covering ISS/Tiangong tracking, crew in space, rocket launches, space news, Mars missions, a 1M+ star catalog, near-Earth asteroids, satellites, and more.\n\n## About Celestial Node\n\n[Celestial Node](https://celestialnode.com) is a comprehensive space data platform that aggregates real-time information from space agencies worldwide. It offers:\n\n- **Space Station Tracking** - Real-time positions of the ISS and Tiangong space station\n- **Crew Information** - Current astronauts, cosmonauts, and taikonauts in orbit\n- **Rocket Launches** - Upcoming launches from providers worldwide\n- **Space News** - Curated news from NASA, ESA, CNSA, JAXA, Roscosmos, and ISRO\n- **Mars Missions** - All 18 Mars missions with instruments and discoveries\n- **Mars Weather** - Surface conditions including temperature, pressure, and wind\n- **Star Catalog** - 1M+ stars from the ESA Gaia mission\n- **Near-Earth Objects** - Asteroid tracking and close approaches\n- **Satellites** - Search and track satellites with re-entry predictions\n- **Space Encyclopedia** - Comprehensive database of spacecraft, missions, and engines\n\n## Quick Start\n\n### Without API Key\n\nAnonymous usage is limited to 25 requests per hour.\n\n**Claude Desktop**\n\nAdd to `~/.config/claude/claude_desktop_config.json`:\n\n```json\n{\n  \"mcpServers\": {\n    \"celestial-node\": {\n      \"command\": \"npx\",\n      \"args\": [\"-y\", \"celestialnode-mcp\"]\n    }\n  }\n}\n```\n\n**Claude Code**\n\n```bash\nclaude mcp add celestial-node -- npx -y celestialnode-mcp\n```\n\n### With API Key\n\nRegister at [celestialnode.com/register](https://celestialnode.com/register) for higher rate limits.\n\n**Claude Desktop**\n\n```json\n{\n  \"mcpServers\": {\n    \"celestial-node\": {\n      \"command\": \"npx\",\n      \"args\": [\"-y\", \"celestialnode-mcp\"],\n      \"env\": {\n        \"CELESTIAL_NODE_API_KEY\": \"your-api-key-here\"\n      }\n    }\n  }\n}\n```\n\n**Claude Code**\n\n```bash\nclaude mcp add celestial-node --env CELESTIAL_NODE_API_KEY=your-api-key-here -- npx -y celestialnode-mcp\n```\n\n## Rate Limits\n\n| Tier | Limit | Authentication |\n|------|-------|----------------|\n| Anonymous | 25 requests/hour | None |\n| Registered (free) | 100 requests/day | API key |\n| Paid | 500 requests/day | API key |\n\nRegister for a free API key at [celestialnode.com/register](https://celestialnode.com/register).\n\n## Tools\n\n| Tool | Description |\n|------|-------------|\n| `get_iss_position` | Real-time ISS position (lat, lon, altitude, velocity) |\n| `get_tiangong_position` | Real-time Tiangong station position |\n| `get_crew_in_space` | Astronauts/cosmonauts/taikonauts currently in orbit |\n| `get_upcoming_launches` | Upcoming rocket launches worldwide |\n| `get_space_news` | Curated space news from NASA, ESA, CNSA, JAXA, Roscosmos, ISRO |\n| `get_mars_missions` | All 18 Mars missions with instruments and discoveries |\n| `get_mars_rovers` | Mars rovers with instruments, discoveries, and status |\n| `get_mars_weather` | Mars surface weather (temperature, pressure, wind) |\n| `search_stars` | Search 1M+ stars from ESA Gaia catalog |\n| `get_star_details` | Full astronomical data for a star by Gaia source ID |\n| `get_constellations` | All 88 IAU constellations |\n| `get_near_earth_objects` | Upcoming asteroid close approaches |\n| `get_hazardous_asteroids` | Potentially hazardous asteroids with orbital data |\n| `get_space_agencies` | Space agencies worldwide |\n| `search_encyclopedia` | Search space encyclopedia (spacecraft, missions, engines) |\n| `get_satellite_categories` | Satellite categories with counts |\n| `search_satellites` | Search tracked satellites by name |\n| `get_upcoming_reentries` | Predicted satellite/rocket stage re-entries |\n\n## Data Sources\n\nAll data is served from [celestialnode.com](https://celestialnode.com) which aggregates from NASA, ESA, CNSA, JAXA, Roscosmos, ISRO, SpaceX, and other global space agencies. Data is updated in real-time by background workers.\n\n## Security\n\nAll 18 tools are **read-only** GET requests. No write operations, no user data access.\n\n## License\n\nMIT\n",
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}