> For the complete documentation index, see [llms.txt](https://docs.radar.citadel-ai.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.radar.citadel-ai.com/en/application-owner-guide/new-application/set-alerts.md).

# Configure Alerts

From the Nodes screen, select the target application and go to the application settings screen.

After transitioning, select `Open settings` on the alerts card.

<figure><img src="/files/2HmHkT2T3OQ8ScyGr47d" alt="" width="563"><figcaption></figcaption></figure>

The alerts page consists of two areas.

* Configured rules: If configured rules exist, you can review them. Multiple alert rules can be configured.
* Recent alert events: You can review the 10 most recent alert events.

<figure><img src="/files/7KNu8qMZIO1beQ8X9qP2" alt=""><figcaption></figcaption></figure>

### Add a new Alert

To add an alert, select `Add alert rule` in the upper right of the screen.

Then enter the following settings.

<table><thead><tr><th width="217.05859375">Setting</th><th>Overview</th></tr></thead><tbody><tr><td>Name</td><td>Set the alert name.</td></tr><tr><td>Period</td><td><p>You can select either <code>Previous Hour</code> or <code>Previous Day</code>.</p><p>The configured period determines the notification timing.</p><ul><li>Previous Hour: 1-hour windows starting on the hour (e.g., 09:00–09:59, 10:00–10:59)</li><li>Previous Day: 24-hour windows starting at 09:00 AM daily (e.g., 09:00 to 08:59 the next day)</li></ul></td></tr><tr><td>Event type</td><td>You can select <code>Block only</code> or <code>Block + Flag</code>.<br><br><code>Block only</code> targets only metrics where Block is configured. <code>Block + Flag</code> targets metrics where either Block or Alert is configured.</td></tr><tr><td>Target</td><td>You can select <code>Input and output</code>, <code>Input</code>, or <code>Output</code>.<br><br>If <code>Input</code> is selected, only inputs (requests) are counted for the threshold. If <code>Output</code> is selected, only outputs (responses) are counted. If <code>Input and output</code> is selected, both inputs and outputs are targeted.</td></tr><tr><td>Threshold count</td><td>Enter the notification threshold as a number. If this threshold is exceeded, an email alert will be sent.</td></tr><tr><td>Notification timing</td><td><p>You can choose between <code>Summary at End of Period</code> and <code>Immediate Notification</code>.</p><ul><li><code>Summary at End of Period</code>: Sends a notification at the end of the set period if the threshold was exceeded.</li><li><code>Immediate Notification</code>: Sends a notification the moment the threshold is exceeded.</li></ul></td></tr><tr><td>Details on Notification Timing<br>(<code>Summary at End of Period</code>)</td><td><p>When <code>Summary at End of Period</code> is selected: </p><p>Once the threshold is met and an alert is sent within a period, no additional notifications will be sent during that same period. If an event meeting the threshold occurs again after transitioning to the next period, a new alert will be sent.</p><p></p><p>Example:</p><p><code>Summary at End of Period</code> | Target Period: 1 Hour / Threshold: 1</p><ul><li>09:10: First block occurs ➔ Alert sent (10:00)</li><li>09:20: Second block occurs ➔ No notification (within same period: 09:00–09:59)</li><li>10:20: Block occurs ➔ Alert sent (new period: 10:00–10:59)</li></ul></td></tr><tr><td>Details on Notification Timing<br>(<code>Immediate Notification</code>)</td><td><p>When <code>Immediate Notification</code> is selected:</p><ul><li>Period: The rolling "Past 1 Hour" or "Past 1 Day" prior to the evaluation time.</li><li>Notification Suppression: To avoid receiving excessive alerts, notifications are silenced for the duration (1 hour or 1 day) after an alert is sent.</li><li>Event logging continues during the suppression period. If the count already meets the threshold when the suppression period ends, a new alert is sent right away.</li></ul><p></p><p>Example: <br><code>Immediate Notification</code> | Target Period: 1 Hour / Threshold: 1 / (Suppression Period: 1 Hour)</p><ul><li>09:10 – First block occurs ➔ Alert sent immediately (09:10–10:10 suppression window)</li><li>09:20 – Second block occurs ➔ No immediate alert (suppressed; event counted)</li><li>10:10 – Suppression window ends ➔ Alert sent because the 09:20 block is within the past hour (09:10–10:10) and fulfills threshold 1</li></ul></td></tr><tr><td>Notification email addresses</td><td>Enter the destination email addresses. To configure multiple email addresses, enter one per line or separate them with commas.</td></tr><tr><td>Enable rule</td><td>When checked, the alert rule is enabled.</td></tr></tbody></table>

After entering all settings, review the alert notification trigger in the preview. If there are no issues, select `Create`.

<figure><img src="/files/2bNefpIqyLL3HHe7j3Ry" alt="" width="375"><figcaption></figcaption></figure>

Configured alert emails can be reviewed in a list on the application alerts page.

If you want to disable an alert, select the notification off icon.

<figure><img src="/files/UdlccaJdvd2WlOmchr1o" alt=""><figcaption></figcaption></figure>

### Alert email notifications

An alert email sample is shown in the image below.

Alert emails are sent from `noreply[at]citade-ai.com`.

<figure><img src="/files/XydI9YA61U1VX93fRcIf" alt="" width="563"><figcaption></figcaption></figure>