Magellan Data Spotlight MCP server

<!-- mcp-name: io.magellandata/spotlight -->

Magellan Data MCP

Corporate ownership intelligence for AI agents. Connect Claude, Cursor, or any MCP-compatible client to Magellan Data's Spotlight platform and ask who owns whom — parent companies, PE backing, corporate families, and portfolio siblings — over lists of thousands of companies at a time.

Hosted server. No install. Connect with an API key, or via OAuth from hosted connectors like claude.ai.

https://spotlight-mcp.magellandata.io/mcp

That's an MCP endpoint, not a web page — paste it into your client's config, not your browser. Opening it directly returns an error, which is the correct behaviour for every hosted MCP server.

Try asking

Once connected, these all work in plain language:

"Read accounts.xlsx and tell me which of these companies are PE-backed, and by whom."

"We just closed Moosend. Find every other company owned by the same PE firm — those are

our warm expansion targets."

"Which of my 200 accounts are subsidiaries of a larger parent? Append the parent company

to the spreadsheet and save it."

"Map the full corporate family under Constant Contact's parent so I can see the sister

companies I'm not covering."

The agent handles the whole pipeline — submitting the batch, polling until the runs finish, checking the price, and joining results back to your original file by input_url.

Quick start

1. Get an API key. Sign up at magellandata.io and generate a key from the Spotlight dashboard. Keys look like mglnsklive_…. Every key carries its own credit balance, and usage is billed to the key that made the call.

2. Connect your client.

Claude Code

claude mcp add --transport http magellan-data https://spotlight-mcp.magellandata.io/mcp \
  --header "Authorization: Bearer mgln_sk_live_YOUR_KEY"

claude mcp list   # expect: magellan-data ... ✓ Connected

Cursor

Add to ~/.cursor/mcp.json (or .cursor/mcp.json in a project):

{
  "mcpServers": {
    "magellan-data": {
      "url": "https://spotlight-mcp.magellandata.io/mcp",
      "headers": {
        "Authorization": "Bearer mgln_sk_live_YOUR_KEY"
      }
    }
  }
}

VS Code

Add to .vscode/mcp.json — this prompts for the key rather than storing it in the file:

{
  "inputs": [
    {
      "type": "promptString",
      "id": "magellanKey",
      "description": "Magellan Data API key (mgln_sk_live_...)",
      "password": true
    }
  ],
  "servers": {
    "magellan-data": {
      "type": "http",
      "url": "https://spotlight-mcp.magellandata.io/mcp",
      "headers": { "Authorization": "Bearer ${input:magellanKey}" }
    }
  }
}

Any other MCP client

The server speaks Streamable HTTP and is stateless. Point any compliant client at https://spotlight-mcp.magellandata.io/mcp with an Authorization: Bearer header.

3. Verify. Ask your agent: "Check my Magellan Data credit balance." If it comes back with a number, you're connected. That call is free.

Authentication

Two methods are supported; use whichever fits how you're connecting.

API keys (mglnsklive_…) — for local and CLI clients like Claude Code, Cursor, or anything you configure by hand. Generate a key in the Spotlight dashboard and pass it as a Bearer token in the Authorization header, as shown in the quick start above. Usage is billed to the key that made the call.

Shortened. The full README is on GitHub.