RelayRailRelayRail
Documentation

Cursor

Add human-in-the-loop capabilities to Cursor AI for safer code changes.

Prerequisites

  • Cursor IDE installed
  • A RelayRail account with an API key
  • Node.js 18+ installed

Configuration

Create or edit your Cursor MCP configuration:

~/.cursor/mcp.json

mcp.json
{
  "relayrail": {
    "command": "npx",
    "args": ["@relayrail/server", "start"],
    "env": {
      "RELAYRAIL_API_KEY": "rr_your_api_key_here"
    }
  }
}

Use Cases

Code Review Approvals

Ask Cursor to request your approval before applying changes to critical files.

Deployment Notifications

Get notified via SMS when Cursor completes a task or encounters an error.

Long-Running Tasks

Start a refactoring task and get notified when it's done, even if you step away.

Example Workflow

In Cursor's chat, you can say:

"Refactor the auth module to use the new API. Ask me for approval before making each change, and send me a notification when you're done."

Cursor will:

  1. Analyze the changes needed
  2. Send you an approval request via SMS for each change
  3. Wait for your response before proceeding
  4. Notify you when the refactoring is complete

Tips

  • -Use high-priority notifications for errors
  • -Set up approval workflows for production deployments
  • -Use commands to trigger Cursor actions remotely