---
title: Get active metrics list
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > API Reference > Metrics
---

# Get active metrics list{% #get-active-metrics-list %}
Copy pageCopied
{% tab title="v1" %}

| Datadog site      | API endpoint                                     |
| ----------------- | ------------------------------------------------ |
| ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v1/metrics |
| ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v1/metrics |
| app.datadoghq.eu  | GET https://api.datadoghq.eu/api/v1/metrics      |
| app.ddog-gov.com  | GET https://api.ddog-gov.com/api/v1/metrics      |
| us2.ddog-gov.com  | GET https://api.us2.ddog-gov.com/api/v1/metrics  |
| app.datadoghq.com | GET https://api.datadoghq.com/api/v1/metrics     |
| us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v1/metrics |
| us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v1/metrics |

### Overview

Get the list of actively reporting metrics from a given time until now. This endpoint requires the `metrics_read` permission.

OAuth apps require the `metrics_read` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#metrics) to access this endpoint.



### Arguments

#### Query Strings

| Name                   | Type    | Description                                                                                                                                    |
| ---------------------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| from [*required*] | integer | Seconds since the Unix epoch.                                                                                                                  |
| host                   | string  | Hostname for filtering the list of metrics returned. If set, metrics retrieved are those with the corresponding hostname tag.                  |
| tag_filter             | string  | Filter metrics that have been submitted with the given tags. Supports boolean and wildcard expressions. Cannot be combined with other filters. |

### Response

{% tab title="200" %}
OK
{% tab title="Model" %}
Object listing all metric names stored by Datadog since a given time.

| Field   | Type     | Description                                                      |
| ------- | -------- | ---------------------------------------------------------------- |
| from    | string   | Time when the metrics were active, seconds since the Unix epoch. |
| metrics | [string] | List of metric names.                                            |

{% /tab %}

{% tab title="Example" %}

```json
{
  "from": "string",
  "metrics": []
}
```

{% /tab %}

{% /tab %}

{% tab title="400" %}
Bad Request
{% tab title="Model" %}
Error response object.

| Field                    | Type     | Description                          |
| ------------------------ | -------- | ------------------------------------ |
| errors [*required*] | [string] | Array of errors returned by the API. |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    "Bad Request"
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="403" %}
Forbidden
{% tab title="Model" %}
Error response object.

| Field                    | Type     | Description                          |
| ------------------------ | -------- | ------------------------------------ |
| errors [*required*] | [string] | Array of errors returned by the API. |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    "Bad Request"
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="429" %}
Too many requests
{% tab title="Model" %}
Error response object.

| Field                    | Type     | Description                          |
| ------------------------ | -------- | ------------------------------------ |
| errors [*required*] | [string] | Array of errors returned by the API. |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    "Bad Request"
  ]
}
```

{% /tab %}

{% /tab %}

### Code Example

##### 
                  \# Required query arguments export from="CHANGE_ME" \# Curl command curl -X GET "https://api.datadoghq.com/api/v1/metrics?from=${from}" \
-H "Accept: application/json" \
-H "DD-API-KEY: ${DD_API_KEY}" \
-H "DD-APPLICATION-KEY: ${DD_APP_KEY}" 
                
##### 

```python
"""
Get active metrics list returns "OK" response
"""

from datadog_api_client import ApiClient, Configuration
from datadog_api_client.v1.api.metrics_api import MetricsApi

configuration = Configuration()
with ApiClient(configuration) as api_client:
    api_instance = MetricsApi(api_client)
    response = api_instance.list_active_metrics(
        _from=9223372036854775807,
    )

    print(response)
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=python) and then save the example to `example.py` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" python3 "example.py"
##### 

```ruby
# Get active metrics list returns "OK" response

require "datadog_api_client"
api_instance = DatadogAPIClient::V1::MetricsAPI.new
p api_instance.list_active_metrics(9223372036854775807)
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=ruby) and then save the example to `example.rb` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" rb "example.rb"
##### 

```go
// Get active metrics list returns "OK" response

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"os"

	"github.com/DataDog/datadog-api-client-go/v2/api/datadog"
	"github.com/DataDog/datadog-api-client-go/v2/api/datadogV1"
)

func main() {
	ctx := datadog.NewDefaultContext(context.Background())
	configuration := datadog.NewConfiguration()
	apiClient := datadog.NewAPIClient(configuration)
	api := datadogV1.NewMetricsApi(apiClient)
	resp, r, err := api.ListActiveMetrics(ctx, 9223372036854775807, *datadogV1.NewListActiveMetricsOptionalParameters())

	if err != nil {
		fmt.Fprintf(os.Stderr, "Error when calling `MetricsApi.ListActiveMetrics`: %v\n", err)
		fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
	}

	responseContent, _ := json.MarshalIndent(resp, "", "  ")
	fmt.Fprintf(os.Stdout, "Response from `MetricsApi.ListActiveMetrics`:\n%s\n", responseContent)
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=go) and then save the example to `main.go` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" go run "main.go"
##### 

```java
// Get active metrics list returns "OK" response

import com.datadog.api.client.ApiClient;
import com.datadog.api.client.ApiException;
import com.datadog.api.client.v1.api.MetricsApi;
import com.datadog.api.client.v1.model.MetricsListResponse;

public class Example {
  public static void main(String[] args) {
    ApiClient defaultClient = ApiClient.getDefaultApiClient();
    MetricsApi apiInstance = new MetricsApi(defaultClient);

    try {
      MetricsListResponse result = apiInstance.listActiveMetrics(9223372036854775807L);
      System.out.println(result);
    } catch (ApiException e) {
      System.err.println("Exception when calling MetricsApi#listActiveMetrics");
      System.err.println("Status code: " + e.getCode());
      System.err.println("Reason: " + e.getResponseBody());
      System.err.println("Response headers: " + e.getResponseHeaders());
      e.printStackTrace();
    }
  }
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=java) and then save the example to `Example.java` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" java "Example.java"
##### 

```python
from datadog import initialize, api
import time

options = {
    'api_key': '<DATADOG_API_KEY>',
    'app_key': '<DATADOG_APPLICATION_KEY>'
}

initialize(**options)

# Taking the last 24hours
from_time = int(time.time()) - 60 * 60 * 24 * 1

result = api.Metric.list(from_time)

print(result)
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=python-legacy) and then save the example to `example.py` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" python "example.py"
##### 

```rust
// Get active metrics list returns "OK" response
use datadog_api_client::datadog;
use datadog_api_client::datadogV1::api_metrics::ListActiveMetricsOptionalParams;
use datadog_api_client::datadogV1::api_metrics::MetricsAPI;

#[tokio::main]
async fn main() {
    let configuration = datadog::Configuration::new();
    let api = MetricsAPI::with_config(configuration);
    let resp = api
        .list_active_metrics(
            9223372036854775807,
            ListActiveMetricsOptionalParams::default(),
        )
        .await;
    if let Ok(value) = resp {
        println!("{:#?}", value);
    } else {
        println!("{:#?}", resp.unwrap_err());
    }
}
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=rust) and then save the example to `src/main.rs` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" cargo run
##### 

```typescript
/**
 * Get active metrics list returns "OK" response
 */

import { client, v1 } from "@datadog/datadog-api-client";

const configuration = client.createConfiguration();
const apiInstance = new v1.MetricsApi(configuration);

const params: v1.MetricsApiListActiveMetricsRequest = {
  from: 9223372036854775807,
};

apiInstance
  .listActiveMetrics(params)
  .then((data: v1.MetricsListResponse) => {
    console.log(
      "API called successfully. Returned data: " + JSON.stringify(data)
    );
  })
  .catch((error: any) => console.error(error));
```

#### Instructions

First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=typescript) and then save the example to `example.ts` and run following commands:
    DD_SITE="datadoghq.com" DD_API_KEY="<DD_API_KEY>" DD_APP_KEY="<DD_APP_KEY>" tsc "example.ts"
{% /tab %}