Cursor

Prerequisites

Cursor installed
A LightOn API key from the LightOn Console

Configuration

Cursor configures MCP servers via a JSON file. Add the following to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "lighton": {
      "url": "https://api.lighton.ai/mcp",
      "headers": {
        "Authorization": "Bearer ${env:LIGHTON_API_KEY}"
      }
    }
  }
}

${env:LIGHTON_API_KEY} is Cursor’s syntax for reading an environment variable at runtime. The key is never stored in the config file. Make sure LIGHTON_API_KEY is set in your shell environment, you can grab your key from the LightOn Console. To scope the server to a single project instead, place the same snippet in .cursor/mcp.json at the root of your project.

Verification

Open Settings → Features → Model Context Protocol and confirm lighton appears in the list.
Check the connection logs via Output panel (Cmd+Shift+U) and select MCP Logs from the dropdown.

Test the connection with a prompt like:

Search my LightOn workspaces for documents about [topic]

You’re all set. From any Cursor session you can now ask it to search or ingest documents in your LightOn workspaces directly.

References

Cursor docs: Model Context Protocol

OpenCode Windsurf

⌘I

MCP Server

Reference

Clients

Prerequisites

Configuration

Verification

References

​Prerequisites

​Configuration

​Verification

​References

Prerequisites

Configuration

Verification

References