Opsgenie Alert Notifier is a free Chrome extension developed by Cem Kucuk. It is designed to help users stay updated with the latest alerts and receive notifications for new alerts through polling Opsgenie's REST API.

With Opsgenie Alert Notifier, users can configure the extension to their preferences. They can select their Opsgenie region, either US or EU, and set their API Key from their Opsgenie account, which should have READ access. Users can also set the time interval for polling the REST API, keeping in mind their rates. Additionally, users can input their alert query to filter the alerts they receive.

The extension provides a convenient popup view where users can easily check their latest alerts by clicking on the Opsgenie logo in the browser's extensions section. The icon's badge displays the count of alerts, with a maximum limit of 100. Users can also check for error messages if any.

Notifications are an essential feature of Opsgenie Alert Notifier. Users receive browser notifications for new alerts after making a new request to the REST API. If there is only one notification, users can access it by clicking on it. However, if there are multiple notifications, users can view a list of them, except on MacOS due to OS limitations.

It is important to note that to use this extension, users must have an active Opsgenie account.