--- title: "Alerts" description: "With Sentry Alerts, you can get real-time visibility into your code to quickly resolve errors & update personal notifications to enhance the error and performance monitoring experience for you and your team. Learn how to get started here." url: https://docs.sentry.io/product/alerts/ --- # Alerts Alerts provide real-time visibility into problems with your code and the impact on your users. There are several types of alerts available with customizable thresholds and integrations. From the **Alerts** page in [sentry.io](https://sentry.io), you can create new alert rules and manage existing ones. The “Alert Rules” tab displays your existing alert rules, along with their current status, project, team, and creation date. By default, the list is filtered so that only alerts associated with the teams you're a member of, as well as ones that aren't associated with any team, are displayed. You can change this using the filter button. The **Alerts** page also displays a “History” tab where you can find a list of metric alerts with information like when it was triggered and how long it was active. ## [Issue Alerts](https://docs.sentry.io/product/alerts.md#issue-alerts) [Issue alerts](https://docs.sentry.io/product/alerts/alert-types.md#issue-alerts) trigger whenever any issue in a project matches specified criteria. You can create alerts for issue-level changes, such as: * New issues * Issue frequency increasing * Resolved and archived issues becoming unresolved You can find a full list of issue alert triggers in [Issue Alert Configuration](https://docs.sentry.io/product/alerts/create-alerts/issue-alert-config.md#when-conditions-triggers). ## [Metric Alerts for Errors & Performance](https://docs.sentry.io/product/alerts.md#metric-alerts-for-errors--performance) [Metric alerts](https://docs.sentry.io/product/alerts/alert-types.md#metric-alerts) trigger when a [metric](https://docs.sentry.io/product/insights/overview/metrics.md) is breached for either error or transaction events. Use metric alerts to monitor a finite and known set of metrics and components you care about, such as error frequency or performance metrics in your entire project, on important pages, or with specific tags. Create alerts to monitor specific metrics, such as: * Total errors in your project * [Latency](https://docs.sentry.io/product/insights/overview/metrics.md#latency): min, max, average, percentile * [Failure rate](https://docs.sentry.io/product/insights/overview/metrics.md#failure-rate) * Crash free session or user rate for monitoring release health * Custom metrics ### [Metric Alerts create Issues](https://docs.sentry.io/product/alerts.md#metric-alerts-create-issues) When you create a Metric Alert, Sentry will automatically create an [Issue](https://docs.sentry.io/product/issues.md) for you. This issue will be associated with the metric alert. You can see related Issues on the Alert Details page. You can find your alerts [here](https://sentry.io/orgredirect/organizations/:orgslug/issues/alerts/rules/). You can find a full list of available metric alerts in [Metric Alerts](https://docs.sentry.io/product/alerts/alert-types.md#metric-alerts). ## [Uptime Monitoring Alerts](https://docs.sentry.io/product/alerts.md#uptime-monitoring-alerts) [Uptime alerts](https://docs.sentry.io/product/uptime-monitoring.md) are triggered when an uptime HTTP check request fails to meet the [uptime check criteria](https://docs.sentry.io/product/uptime-monitoring.md#uptime-check-criteria). You can customize when alerts are triggered using [thresholds](https://docs.sentry.io/product/alerts/create-alerts/uptime-alert-config.md#4-thresholds) and define custom success criteria with [verification](https://docs.sentry.io/product/alerts/create-alerts/uptime-alert-config.md#5-verification) (early access). Use uptime alerts to make sure a specific URL is constantly available, even during periods of low or no traffic. ## [Cron Monitor Alerts](https://docs.sentry.io/product/alerts.md#cron-monitor-alerts) [Cron monitor alerts](https://docs.sentry.io/product/crons.md) are triggered when a scheduled, recurring job misses a check-in, exceeds its maximum runtime, or reports a failure. You can view and manage cron monitors from the **Alerts** page by filtering by the "Cron Monitors" alert type. Use cron monitor alerts to ensure critical jobs run on schedule and complete successfully. Set up monitoring and configure alerts in [Cron Monitoring](https://docs.sentry.io/product/crons/getting-started.md). ## [Creating Alerts](https://docs.sentry.io/product/alerts.md#creating-alerts) When you create a new project in [sentry.io](https://sentry.io), you can select a default issue alert. However, you can also [create your own alerts](https://docs.sentry.io/product/alerts/create-alerts.md) to suit your team’s needs, using these [alert best practices](https://docs.sentry.io/product/alerts/best-practices.md) as a guide. ## [Muting Alerts](https://docs.sentry.io/product/alerts.md#muting-alerts) Alerts should notify you when there's an important problem with your application. But they shouldn't be too noisy, because that can lead to alert fatigue. Muting alerts is one way to reduce noise, but we recommend following these [alert best practices](https://docs.sentry.io/product/alerts/best-practices.md) to help you create relevant alerts that notify the people equipped to fix the problem. Any user can mute alerts for their entire organization by default, but users with manager or owner-level permissions can update the minimum role requirement by going to **Settings > General Settings > Let Members Create and Edit Alerts**. ### [Muting Issue Alerts](https://docs.sentry.io/product/alerts.md#muting-issue-alerts) Issue alerts can be muted on the **Alerts** details page by clicking the "Mute" button. This will keep the alert from notifying you until you click "Unmute". If you want to keep the alert from firing entirely, select "Mute for everyone" from the dropdown. If there's just one alert rule and it's set up to notify an entire integration, the only muting option will be "Mute for everyone". If there are multiple alert rules and they're set to notify both an integration and a user or a team, selecting "Mute for me" will only silence the alert for you, not the rest of the team. ### [Muting Metric Alerts](https://docs.sentry.io/product/alerts.md#muting-metric-alerts) Metric alerts work in the same way as Issue alerts and can be muted on the **Alerts** details page by clicking the "Mute" button. ## [Disabled Alerts](https://docs.sentry.io/product/alerts.md#disabled-alerts) Sentry has disabled duplicate alerts and alerts with no actions. Anyone with [alert edit access](https://docs.sentry.io/organization/membership.md) can re-enable an alert by editing its conditions and re-saving it. Alerts need to pass Sentry’s checks before they can be saved. See [best practices](https://docs.sentry.io/product/alerts/best-practices.md) for guidance on writing useful alerts. ## [Notifications](https://docs.sentry.io/product/alerts.md#notifications) Besides alerts, Sentry sends you notifications about various things like [issue state changes](https://docs.sentry.io/product/issues/states-triage.md), [release deploys](https://docs.sentry.io/product/releases.md), and [quota usage](https://docs.sentry.io/pricing/quotas.md). You can fine-tune these notifications, as well as your personal alert settings, in **User Settings > Notifications**. Learn more about notifications and adjusting their associated settings in [the full documentation](https://docs.sentry.io/product/alerts/notifications.md). ## [Learn more](https://docs.sentry.io/product/alerts.md#learn-more) * #### [Alert Types](https://docs.sentry.io/product/alerts/alert-types.md) Learn about the three types of alerts Sentry provides: issue alerts, metric alerts, and uptime monitoring alerts. * #### [Create Alerts](https://docs.sentry.io/product/alerts/create-alerts.md) Learn how to create alerts that keep you informed about errors and performance issues in your application. * #### [Alerts Best Practices](https://docs.sentry.io/product/alerts/best-practices.md) Learn best practices for creating alerts. * #### [Notifications](https://docs.sentry.io/product/alerts/notifications.md) Learn about the types of notifications that Sentry sends you, and how to manage them. ## Pages in this section - [Alert Types](https://docs.sentry.io/product/alerts/alert-types.md) - [Create Alerts](https://docs.sentry.io/product/alerts/create-alerts.md) - [Alerts Best Practices](https://docs.sentry.io/product/alerts/best-practices.md) - [Notifications](https://docs.sentry.io/product/alerts/notifications.md)