# Amazon Managed Blockchain (AMB) Query API usage metrics on Amazon CloudWatch
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## API usage metrics on Amazon CloudWatch
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The API usage metrics published to CloudWatch correspond to the Amazon Managed Blockchain (AMB) Query service quotas. You can configure alarms to alert you when your usage approaches a service quota. For more information about CloudWatch integration with service quotas, see [AWS usage metrics](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Service-Quota-Integration.html) in the *Amazon CloudWatch User Guide*.

AMB Query publishes the following API metrics in the `AWS/Usage` namespace, with the `Amazon Managed Blockchain Query` service name.


| Metric | Description | 
| --- | --- | 
| `CallCount` | The total number of calls made to an API in AMB Query. SUM represents the total number of calls to the API during the specified period. | 

 Amazon Managed Blockchain (AMB) Query publishes usage metrics to the `AWS/Usage` namespace with the following dimensions.


| Dimension | Description | 
| --- | --- | 
| Service | The name of the AWS service containing the resource. `Amazon Managed Blockchain Query` will always be the value for this dimension. | 
| Type | The type of the entity being reported. `API` will always be the value for this dimension. | 
| Resource | The type of resources being reported. The *name* of the [AMB Query API operation](https://docs.aws.amazon.com/managed-blockchain/latest/AMBQ-APIReference/API_Operations.html) used will be the value for this dimension. | 
| Class | The class of the resource being reported. `None` will always be the value for this dimension. |