Notifications

Send one-way notifications to users via SMS or email. Perfect for status updates and alerts.

Sending Notifications

Use the send_notification tool to send one-way messages:

await mcp.callTool("send_notification", {
  message: "Build complete! All 247 tests passed.",
  channel: "sms"  // or "email"
});

Unlike approval requests, notifications don't wait for a response.

Best for urgent, time-sensitive notifications. Messages are limited to 160 characters per segment.

Best for detailed notifications with formatting. Can include longer content and links.

RelayRail chooses the best channel based on user preferences and message content.

Set priority to influence routing and delivery:

await mcp.callTool("send_notification", {
  message: "Critical: Database connection lost!",
  priority: "high"  // low, normal, high
});