How to Use the Arcsecond.io MCP in Cursor

Q: Can Cursor's agent use Arcsecond.io to write a Python script that plots a star's location?

Absolutely. You can instruct the agent to use searchobjects to find the star, then getobject to get its coordinates. From there, you can ask it to generate a Python script using Matplotlib to plot the location.

Q: How do I configure the Arcsecond.io MCP server for my project in Cursor?

Create a .cursor/mcp.json file in your project's root directory. Add the Arcsecond.io server configuration there, pointing to its command or URL. Cursor will automatically pick it up for that project.

Generate code in Cursor using live astronomical data from your Arcsecond.io account.

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Setup Arcsecond.io with Cursor

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Write code with real sky data

Stop writing code with fake data. Tell Cursor's agent to find a star with `search_objects`, and it will generate the actual Python or TypeScript code to fetch that data. You get working functions, not just stubs. Your agent can chain commands, too. Ask it to find a specific exoplanet, get its orbital data with `get_object`, and then write a script to plot its transit. You're not just getting data; you're getting tested code that uses that data, built from the live API response.

Build against your observatory's API

If you're building a dashboard for your observatory, this is a massive shortcut. The agent can use `list_telescopes` and `list_night_logs` to see the real data structures in your Arcsecond.io account. Then, it writes the client-side code for you. No more context switching between your editor and API docs. The agent has direct access to your schemas through this MCP Server. It produces code that's already wired up to your actual endpoints and data models.

A faster way to build data-driven apps

This Arcsecond.io MCP server changes how you work with astronomical data. Instead of manually searching for objects and copy-pasting JSON into your code, your agent does the work. It's a direct pipeline from the database to your editor. This workflow keeps you focused on the code you're writing. When you need to know the right ascension of Betelgeuse, you just ask. The agent finds it and injects it right where you need it.

Setup guide

Set up Arcsecond.io MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Arcsecond.io MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Arcsecond.io transactions." If the MCP tools are loaded correctly, Cursor will call the Arcsecond.io tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "arcsecondio-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Common questions about Arcsecond.io MCP in Cursor

Absolutely. You can instruct the agent to use `search_objects` to find the star, then `get_object` to get its coordinates. From there, you can ask it to generate a Python script using Matplotlib to plot the location.

Create a `.cursor/mcp.json` file in your project's root directory. Add the Arcsecond.io server configuration there, pointing to its command or URL. Cursor will automatically pick it up for that project.

Yes, that's the main point. The agent can see the responses from the Arcsecond.io tools and will write functions that correctly handle that data structure. It's like having an assistant who already knows the API.

Yes. As long as your MCP server is configured with the right authentication for your Arcsecond.io account, tools like `list_night_logs` and `list_datasets` will work with your private data.

The server only touches the specific data you request with a tool. When you search for an object, it processes that query. When you list telescopes, it processes that list. Your Arcsecond.io credentials are used for auth but not stored by the server itself.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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