How do I get my Arcsecond.io API Key?

Log in to your Arcsecond.io account and go to your Profile page. You will find your Personal API Key there.

What is an observatory subdomain?

If you are part of a specific observatory or organization on Arcsecond.io, your data is hosted on a subdomain (e.g., myobs.arcsecond.io). You can use this subdomain to access site-specific data.

Can I search for any astronomical object?

Yes, the search_objects capability allows you to search across millions of objects in the SIMBAD, Gaia, and other astronomical databases integrated into Arcsecond.io.

An astronaut overseeing a futuristic data hub

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Connect Arcsecond.io to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get coordinates and manage observatories using natural language prompts.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 7 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-04

4 capabilities in this set.

Part of 7 available through Arcsecond.io.

01
Get account check
Verify that your Arcsecond account connection is active and ready to use.
02
Get object
Retrieve detailed astrophysical data for a specific astronomical object.
03
List datasets
List all available datasets associated with a specific observatory.
04
Search objects
Search for any type of astronomical object, including stars, galaxies, and planets.

Capability set02 / 02

05-07

3 capabilities in this set.

Part of 7 available through Arcsecond.io.

05
List night logs
List observation night logs for a given observatory, helping track historical data collections.
06
List observing sites
List all known observing sites associated with your observatory subdomain.
07
List telescopes
List the specific telescopes and instruments used at your observatory.

Automate a task

Put Arcsecond.io to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Arcsecond.io works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Arcsecond.io to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

875ms average. Fast in production.

Arcsecond.io is checked daily against the live service.

Daily averagePeak 1094ms

Oct 3Today

Fastest day: 717ms
Slowest day: 1094ms
14-day trend: Slowing+12%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 7 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Arcsecond.io, so you can see the experience inside your AI.

It does not authenticate your account with Arcsecond.io. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Arcsecond.io Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_VCSdZzJpAtKNBrrwbe3j88g4tPYnBYLlfwXxqQYX/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Arcsecond.io capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "arcsecondio-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_VCSdZzJpAtKNBrrwbe3j88g4tPYnBYLlfwXxqQYX/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Arcsecond.io in Claude and other AIs

See all the AI clients this connector works with ↑

FAQ

Questions Arcsecond.io owners ask.

01
How do I get my Arcsecond.io API Key?
Log in to your Arcsecond.io account and go to your Profile page. You will find your Personal API Key there.
02
What is an observatory subdomain?
If you are part of a specific observatory or organization on Arcsecond.io, your data is hosted on a subdomain (e.g., myobs.arcsecond.io). You can use this subdomain to access site-specific data.
03
Can I search for any astronomical object?
Yes, the search_objects capability allows you to search across millions of objects in the SIMBAD, Gaia, and other astronomical databases integrated into Arcsecond.io.

Explore

More in The Unthinkable

Connect Arcsecond.io to Claude, Cursor, ChatGPT & more

Connect Arcsecond.io to ChatGPT, Claude and Gemini

Your AI does the work. We keep it safe and sound.