How do I install the celestial mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `CELESTIAL_NODE_API_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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Celestial MCP Server

Real-time space data — ISS tracking, rocket launches, space news, Mars weather, and more

Local serverstdio

What is the Celestial MCP Server?

Real-time space data — ISS tracking, rocket launches, space news, Mars weather, and more

What you get

An MCP server for real-time space data from Celestial Node.

Celestial Node is a comprehensive space data platform that aggregates real-time information from space agencies worldwide. It offers:

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
get_iss_position	Real-time ISS position (lat, lon, altitude, velocity)
get_tiangong_position	Real-time Tiangong station position
get_crew_in_space	Astronauts/cosmonauts/taikonauts currently in orbit
get_upcoming_launches	Upcoming rocket launches worldwide
get_space_news	Curated space news from NASA, ESA, CNSA, JAXA, Roscosmos, ISRO
get_mars_missions	All 18 Mars missions with instruments and discoveries
get_mars_rovers	Mars rovers with instruments, discoveries, and status
get_mars_weather	Mars surface weather (temperature, pressure, wind)
search_stars	Search 1M+ stars from ESA Gaia catalog
get_star_details	Full astronomical data for a star by Gaia source ID
get_constellations	All 88 IAU constellations
get_near_earth_objects	Upcoming asteroid close approaches
get_hazardous_asteroids	Potentially hazardous asteroids with orbital data
get_space_agencies	Space agencies worldwide

How to install the Celestial MCP Server

{
  "mcpServers": {
    "celestial-node": {
      "command": "npx",
      "args": ["-y", "celestialnode-mcp"]
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

Variable	Description	Required
CELESTIAL_NODE_API_KEY	Credential the server authenticates with.	Yes

Example prompts to try

“Use Celestial to get iss position.”
“Use Celestial to get tiangong position.”
“Use Celestial to get crew in space.”

Frequently asked questions

Real-time space data — ISS tracking, rocket launches, space news, Mars weather, and more Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.