Setup

API monitoring in Sysmos runs distributed workers that check your endpoints from multiple global regions. Setup takes less than a minute.

Create Your First Monitor

1. Log in to the Sysmos dashboard
2. Navigate to API Monitors in the sidebar
3. Click Create Monitor
4. Fill in the monitor details:

5. Click Save

Your monitor starts running immediately.

Advanced Options

Custom Headers

Add headers for authentication or custom routing:

{
  "Authorization": "Bearer your-token",
  "X-Custom-Header": "value"
}

Request Body

For POST, PUT, and PATCH monitors, you can specify a JSON request body:

{
  "test": true,
  "timestamp": "{{now}}"
}

Assertions

Define conditions that must be met for the check to be considered successful:

• Status code — equals 200, in range 200-299
• Response body — contains "ok", does not contain "error"
• Response time — less than 2000ms
• Headers — Content-Type contains application/json

If any assertion fails, the check is marked as failed and alert rules are evaluated.

Monitor States