# API Alerts and Tier Specific Signals

*MuleSoft Platform Architect Study Guide · Monitoring and analyzing application networks · Last updated November 13, 2026 · https://www.certifyforce.com/study-guide/mulesoft-platform-architect/monitoring-and-analyzing-application-networks/api-alerts-and-tier-specific-signals*

Configure API-led alert populations and layer budgets while respecting sliding windows, state changes, notification scope and automated-policy limits.

- Certification: Salesforce MuleSoft Platform Architect
- Exam section: Monitoring and analyzing application networks
- Study guide: https://www.certifyforce.com/study-guide/mulesoft-platform-architect

**Official exam objective:**

> Specify alerts to define for key metrics of API invocations for all layers of API-led connectivity.

## What the exam expects

- Choose API alert metrics that match the affected population and API-led layer.
- Interpret sliding windows, state transitions and notification behavior.
- Distinguish API instance conditions from application and infrastructure signals.
- Apply policy-selection and automated-policy boundaries without assuming every 401 is equivalent.

An **instance alert** evaluates an API condition; a **sliding window** moves with time; a **policy violation** records an enforcement outcome; a **contract alert** notifies about client-access actions; a **severity** classifies an alert ([API concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts), [Monitoring configuration](https://docs.mulesoft.com/monitoring/alerts-hf)).

## Key facts

| Fact | Detail | Source |
|---|---|---|
| API Manager workflow | The cited creation task applies to Mule Gateway. | [Create alerts](https://docs.mulesoft.com/api-manager/latest/add-api-alert-task) |
| Request Count interval | Sliding window, not calendar-minute bucket. | [Concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts) |
| Initial transition | A new alert can lack the state needed to detect its first change. | [Concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts) |
| Layer budgets | Configure each instance's required full response-time threshold. | [Concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts) |
| Selected violations | Monitoring counts the selected policy-violation population. | [Monitoring](https://docs.mulesoft.com/monitoring/alerts-hf) |
| Automated policies | Policy Violation instance alerts are unavailable for them. | [Create alerts](https://docs.mulesoft.com/api-manager/latest/add-api-alert-task) |
| Policy order | API-level policies cannot execute before automated policies. | [Reordering](https://docs.mulesoft.com/mule-gateway/policies-reorder) |
| Demand | API requests and successfully processed Mule messages are different populations. | [Monitoring](https://docs.mulesoft.com/monitoring/alerts-hf) |
| Sender | Mule API instance emails use the fixed no-reply@mulesoft.com address. | [Concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts) |

## Check yourself

- When adding several API Manager alerts to one environment, what naming constraint applies?
- When creating an API Manager instance alert, which enabled-state option is selected by default?
- When creating an instance alert for a Mule Gateway API instance in API Manager, which four alert conditions can be chosen?

## Sources

- [Reviewing Alerts Concepts](https://docs.mulesoft.com/api-manager/latest/using-api-alerts)
- [Add Instance Alerts in API Manager](https://docs.mulesoft.com/api-manager/latest/add-api-alert-task)
- [Configuring Alerts in Anypoint Monitoring](https://docs.mulesoft.com/monitoring/alerts-hf)
- [Automated Policies](https://docs.mulesoft.com/mule-gateway/policies-automated-overview)
- [Reordering Policies](https://docs.mulesoft.com/mule-gateway/policies-reorder)

## About the full unit

The "Core concepts", "Exam traps" and "Worked scenario" sections of this unit, its 7 linked practice questions, and unlimited timed mock exams are included with the MuleSoft Platform Architect pack (USD $19): https://www.certifyforce.com/practice-exams