Use Orbitwren MCP with Gemini CLI

Orbital data center & space AI compute tracker MCP: projects, launches, orbits, alerts. 100 free/day

Remote MCP server (Streamable HTTP), nothing to install. Free: 100 free/day · Paid: Alerts $5/mo; keys $9/mo; x402 $0.003/call

Set it up

Run the command, or add the server to settings.json under "mcpServers".
Start Gemini CLI and run /mcp to list the server and its tools.
Ask a question the tools can answer.

Run:

gemini mcp add --transport http orbitwren 'https://orbitwren.cybermaxtools.com/mcp?via=use-with-gemini-cli'

Or add it to settings.json yourself::

{
  "mcpServers": {
    "orbitwren": {
      "httpUrl": "https://orbitwren.cybermaxtools.com/mcp?via=use-with-gemini-cli"
    }
  }
}

With a paid key:

gemini mcp add --transport http --header "x-api-key: YOUR_KEY" orbitwren 'https://orbitwren.cybermaxtools.com/mcp?via=use-with-gemini-cli'

Use the project file only if it is not committed with the key in it.

Where it goes:

~/.gemini/settings.json (user)
.gemini/settings.json (project, the default for the add command)

Config format checked 2026-10-09 against Gemini CLI's MCP documentation.

Tools you get

Endpoint checked 2026-10-09: https://orbitwren.cybermaxtools.com/mcp answered an MCP initialize (protocol 2025-06-18) and tools/list with 6 tools, all marked read-only. No key was used and no tool was called.

Tool	What it does	Required inputs
`orbital_compute_projects`	Orbital data centers and space AI compute projects (data centers in space, AI chips in orbit, FCC constellation filings): company, partners, hardware in orbit, launch date, vehicle, status, scale, publicly stated funding, NORAD IDs and source URLs. Use for questions like "who is building orbital data centers?" or "are there data centers in space?". Filter by company, status, category or text.	none
`next_compute_launch`	The next launch carrying a tracked orbital data center / space AI compute project, with NET, window, status, seconds to launch and the projects on board (null when none is scheduled).	none
`upcoming_launches`	Upcoming orbital launches from The Space Devs Launch Library 2 with rideshare and orbital-compute flags; filter by days ahead, rideshare, compute, provider, country or text.	none
`compute_satellite_orbits`	CelesTrak orbit elements with perigee/apogee and period for tracked orbital-compute satellites (by NORAD ID or project).	none
`orbital_compute_alerts`	Orbitwren Alerts: classified events for orbital data centers and space AI compute (new_project, launch, date_change, status_change) with companies and source URLs. Needs a paid Orbitwren key (Alerts plan $5/month).	none
`tracker_changes`	Day-to-day changes: project status, launch dates, NORAD IDs, tracked launch NET/status.	none

Test the endpoint from a terminal

This lists the tools without a key and without calling any of them:

curl -s https://orbitwren.cybermaxtools.com/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

If it does not work

Use "httpUrl" for Streamable HTTP; "url" is for the older SSE transport.
The docs note that for unpaid-tier and Google One users, Gemini CLI was replaced by Antigravity CLI on 18 June 2026.
The free tier has a daily limit (see the pricing line above); a paid key raises it.

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