---
title: "POST /#X-Amz-Target=AmazonForecast.DescribeMonitor"
method: POST
path: "/#X-Amz-Target=AmazonForecast.DescribeMonitor"
---

# POST /#X-Amz-Target=AmazonForecast.DescribeMonitor

`POST /#X-Amz-Target=AmazonForecast.DescribeMonitor`

Describes a monitor resource. In addition to listing the properties provided in the CreateMonitor request, this operation lists the following properties:

*   `Baseline`
    
*   `CreationTime`
    
*   `LastEvaluationTime`
    
*   `LastEvaluationState`
    
*   `LastModificationTime`
    
*   `Message`
    
*   `Status`

## Headers

- `X-Amz-Target` 'AmazonForecast.DescribeMonitor', required

## Request body

- DescribeMonitorRequest
  - `MonitorArn` string, required — The Amazon Resource Name (ARN) of the monitor resource to describe.

## Response `200`

Success

- DescribeMonitorResponse
  - `MonitorName` string — The name of the monitor.
  - `MonitorArn` string — The Amazon Resource Name (ARN) of the monitor resource described.
  - `ResourceArn` string — The Amazon Resource Name (ARN) of the auto predictor being monitored.
  - `Status` string — The status of the monitor resource.
  - `LastEvaluationTime` string, date-time — The timestamp of the latest evaluation completed by the monitor.
  - `LastEvaluationState` string — The state of the monitor's latest evaluation.
  - `Baseline` object — Metrics you can use as a baseline for comparison purposes. Use these values you interpret monitoring results for an auto predictor.
    - `PredictorBaseline` object — The initial <a href="https://docs.aws.amazon.com/forecast/latest/dg/metrics.html">accuracy metrics</a> for the predictor you are monitoring. Use these metrics as a baseline for comparison purposes as you use your predictor and the metrics change.
      - `BaselineMetrics` BaselineMetric[] — The initial <a href="https://docs.aws.amazon.com/forecast/latest/dg/metrics.html">accuracy metrics</a> for the predictor. Use these metrics as a baseline for comparison purposes as you use your predictor and the metrics change.
        - `Name` string — The name of the metric.
        - `Value` number, double — The value for the metric.
  - `Message` string — An error message, if any, for the monitor.
  - `CreationTime` string, date-time — The timestamp for when the monitor resource was created.
  - `LastModificationTime` string, date-time — The timestamp of the latest modification to the monitor.
  - `EstimatedEvaluationTimeRemainingInMinutes` integer — The estimated number of minutes remaining before the monitor resource finishes its current evaluation.

## Other responses

- `480` — InvalidInputException
- `481` — ResourceNotFoundException

---

[API](https://skmtc.net/aws/apis/forecast.md) · [All operations](https://skmtc.net/aws/apis/forecast/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/forecast/versions/3d1c872d2ac9/schema)