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Orbinauts MCP Server

by orbinauts Your server? Claim it
answering

Orbinauts is answering right now. Last checked 5 min ago. It exposes 9 tools.

Satellite tracking: where any satellite is, ISS passes over your town, launches, re-entries, crews.

Uptime history 10 days of history
10 days agonow
100.0%
Uptime 24h
91 of 91 checks
9
Tools
read from the server
1467 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 7 November 2026. No other catalogue keeps this.

6 Nov a tool appeared orbital_activity
6 Nov a tool description was rewritten close_approaches
6 Nov a tool changed version

Nothing serious here today

Today is the operative word: we check Orbinauts every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add mcp --transport http https://api.orbinauts.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.orbinauts.com/mcp
~/.codex/config.toml
[mcp_servers.mcp]
url = "https://api.orbinauts.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "url": "https://api.orbinauts.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp": {
      "type": "http",
      "url": "https://api.orbinauts.com/mcp"
    }
  }
}

Available tools 9

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

census
census
How many satellites and other objects are in orbit around Earth right now, counted by kind (satellites, rocket bodies, debris, unidentified) and by orbit (low, medium, inclined geosynchronous, geostationary, highly elliptical). Call it when asked how many satellites there are, how crowded space is, or how much debris is in orbit. Takes no parameters beyond the language. It cannot name or find one satellite.
close
close_approaches
The close approaches between objects in orbit that Space-Track reports publicly: two objects predicted to pass within about a kilometre of each other, with the time of closest approach in UTC, the miss distance, the chance of collision where one is stated, and the two objects named. Coming ones first, then those of the last thirty days. Call it when asked whether satellites are about to collide, what is close to the ISS, or what is happening in orbit this week. It lists close approaches alone: manoeuvres, breakups and rendezvous are in the record of orbital activity, which the orbital_activity tool reads. It cannot predict approaches Space-Track has not reported, and a reported approach is rarely a collision.
crew
crew
Who is aboard each space station right now (the International Space Station and Tiangong), as Launch Library lists their expeditions: each person's name, role, agency, the flight that brought them and the day it docked, with the crew changes of the last two days. Call it when asked who is in space, who is on the ISS, how many people are in orbit, or who is aboard Tiangong. Takes no parameters beyond the language. It does not know where a station is now and lists nobody outside a station.
launches
launches
Rocket launches coming up in the next sixty days and launched in the last thirty, from Launch Library 2: for each, the rocket and the mission, what it carries and where it is bound, the launch site, its time as exactly as the provider states it (a minute, a day, a month) in UTC, and its status (go, tentative, success, failure). Call it when asked what launches next, what launched recently, when a named launch is, or what is launching this week. Times move often; a tentative launch may slip. It cannot say where a satellite already in orbit is or when it passes overhead.
orbital
orbital_activity
The record of what happened in Earth orbit, newest first: close approaches that passed, breakups and rendezvous with their current state, re-entries on the day the catalogue dates them, rocket launches that flew with their outcome, and objects the day they entered the catalogue, each with its time in UTC, the objects involved, its state and its source. Kept for good since the record began; by default the latest three months, or one month with month (YYYY-MM), and one kind with kind. Call it when asked what happened in orbit this week or last month, what a satellite did lately, or how busy orbit has been. It cannot forecast: a coming close approach, an expected re-entry or an upcoming launch is not in it, and nothing before the record began is.
passes
passes
When satellites pass over a place in the next ten days, in the place's local time: for one satellite, every pass with its rise, highest point and set, and whether it can be seen; with no satellite named, the passes a person can see with the naked eye (the ISS, Tiangong, Hubble and the other bright ones), soonest first. Call it when someone asks when they can see the ISS or any satellite from a city, or what passes over them tonight. Name the place (a city: Madrid, Brisbane, Buenos Aires, in English or Spanish) and the answer uses that place's time zone; or give latitude and longitude, and the answer is in UTC unless time_zone names a zone. A name several cities share is computed for the largest, and the answer names the others so you can ask again for one of them. Passes are predictions from the latest orbit data; a visible pass is one in a dark sky with the satellite in sunlight, at least ten degrees up and bright enough; it says nothing about clouds. It cannot answer for a geostationary satellite, which never rises or sets, and the place name or coordinates sent are computed with and never stored or logged.
reentries
reentries
Which objects in orbit are expected to fall back to Earth within the next week, each with the window Space-Track predicts (a start and an end in UTC, never a place), and which came down in the last ninety days, each with the day the catalogue dates its re-entry. Satellites, rocket bodies and debris alike, named as the catalogue names them. Call it when asked what is about to fall from orbit, whether a named object has re-entered, or what came down recently. It cannot say where anything will fall or fell: Space-Track publishes no place, only a time window or a day.
satellite
satellite_now
Where one satellite is right now: the point on the ground beneath it, its altitude and speed, what it is over (a country or a sea), whether it is in sunlight or in the Earth's shadow, the orbit it is on, and what it is: its kind, its launch day and mass where the site has written them, and for a space station who is aboard, for a navigation satellite whether it is in service. Takes the satellite's alias (iss, hubble, tiangong) or catalogue number. It cannot predict when the satellite passes over a place and cannot answer for a constellation as a whole.
satellites
find_satellites
Finds satellites and other tracked objects by name, alias or catalogue number, in the catalogue of everything in orbit. Call it when a person names a satellite in words (Hubble, Starlink, Tiangong, a GPS satellite) to learn its catalogue number and alias. Each match says what the object is (a space station, a telescope, a rocket body, debris), which orbit it flies, whether it can be seen with the naked eye, and its page where it has one. It cannot tell where a satellite is now or when it passes over a place.

Endpoints

URLTransportStateLatencyChecked
https://api.orbinauts.com/mcp streamable-http answering 191 ms 5 min ago

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Orbinauts — questions

Answers built from our own checks of this server.

What can Orbinauts do?
It exposes 9 tools, read directly from the server on our last check. Among them: census, close_approaches, crew, find_satellites, launches, orbital_activity and 3 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Orbinauts working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 1467 ms. The bar chart above shows every period we have measured.
How do I connect Orbinauts?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Orbinauts need an API key?
No. Orbinauts completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Orbinauts?
It answers our handshake in 1467 ms on average, which is faster than 2% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.