--- title: List metric collections description: Datadog, the leading service for cloud-scale monitoring. breadcrumbs: Docs > API Reference > Experiments --- > For the complete documentation index, see [llms.txt](https://docs.datadoghq.com/llms.txt). {% callout %} # Important note for users on the following Datadog sites: app.ddog-gov.com, us2.ddog-gov.com {% alert level="danger" %} This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site.md). ({% placeholder "user-datadog-site-name" /%}). {% /alert %} {% /callout %} # List metric collections{% #list-metric-collections %} {% tab title="v2" %} | Datadog site | API endpoint | | ----------------- | ----------------------------------------------------------------------- | | ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/experiments/metric-collections | | ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/experiments/metric-collections | | app.datadoghq.eu | GET https://api.datadoghq.eu/api/v2/experiments/metric-collections | | app.ddog-gov.com | GET https://api.ddog-gov.com/api/v2/experiments/metric-collections | | us2.ddog-gov.com | GET https://api.us2.ddog-gov.com/api/v2/experiments/metric-collections | | uk1.datadoghq.com | GET https://api.uk1.datadoghq.com/api/v2/experiments/metric-collections | | app.datadoghq.com | GET https://api.datadoghq.com/api/v2/experiments/metric-collections | | us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/experiments/metric-collections | | us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/experiments/metric-collections | ### Overview List metric collections for the organization. Collections are reusable ordered metric sets; attaching one to an experiment creates an independent snapshot. This endpoint requires the `product_analytics_metrics_read` permission. OAuth apps require the `product_analytics_metrics_read` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#experiments) to access this endpoint. ### Arguments #### Query Strings | Name | Type | Description | | ------------ | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | include | array | Optional fields to include. Repeat this parameter to request several fields. `counts` adds metric_count. | | page[limit] | integer | Number of results per page. The default is 25. Values above 50 are reduced to 50. | | page[offset] | integer | Number of results to skip before returning this page. | | search | string | Find collections whose names contain the search text, regardless of case. Leading and trailing spaces are ignored. Blank values apply no filter. The maximum length is 1024 UTF-8 bytes. | | sort | string | Sort by one field: `name`, `created_at`, or `updated_at`. Prefix with `-` for descending order. The default is `-created_at`. | ### Response {% tab title="200" %} OK {% tab title="Model" %} List of metric collection resources with pagination information. | Parent field | Field | Type | Description | | ------------ | ---------------------- | --------- | --------------------------------------------------------------------------- | | | data [*required*] | [object] | Resources returned in this response. | | data | attributes | object | Details of the metric collection. | | attributes | created_at | date-time | Time when this resource was created. | | attributes | description | string | Text that explains the metric collection. | | attributes | is_guardrail | boolean | Whether the collection is used for guardrail metrics. | | attributes | metric_count | int64 | Number of metrics in this collection. | | attributes | metrics | [object] | Metrics included in this collection. | | metrics | metric_id | string | ID of the metric represented by this entry. | | metrics | metric_name | string | Display name of the metric represented by this entry. | | attributes | name | string | Display name of the metric collection. | | attributes | updated_at | date-time | Time when this resource was last updated. | | data | id [*required*] | uuid | ID of the metric collection. | | data | type [*required*] | enum | Metric collections resource type. Allowed enum values: `metric-collections` | | | links | object | Links for navigating a paginated result set. | | links | first | string | URL of the first page of results. | | links | last | string | URL of the last page of results. | | links | next | string | URL of the next page of results. | | links | prev | string | URL of the previous page of results. | | links | self | string | URL of the current page of results. | | | meta | object | Pagination information for a list response. | | meta | page | object | Result counts and offsets for a page of results. | | page | first_offset | int64 | Offset of the first page of results. | | page | last_offset | int64 | Offset of the last page of results. | | page | limit | int64 | Maximum number of results returned in one page. | | page | next_offset | int64 | Offset of the next page of results. | | page | offset | int64 | Number of results skipped before this page. | | page | prev_offset | int64 | Offset of the previous page of results. | | page | total | int64 | Total number of matching results across all pages. | | page | type | string | Pagination method used for this result set. | {% /tab %} {% tab title="Example" %} ```json { "data": [ { "attributes": { "created_at": "2019-09-19T10:00:00.000Z", "description": "string", "is_guardrail": false, "metric_count": "integer", "metrics": [ { "metric_id": "string", "metric_name": "string" } ], "name": "string", "updated_at": "2019-09-19T10:00:00.000Z" }, "id": "550e8400-e29b-41d4-a716-446655440023", "type": "metric-collections" } ], "links": { "first": "string", "last": "string", "next": "string", "prev": "string", "self": "string" }, "meta": { "page": { "first_offset": "integer", "last_offset": "integer", "limit": "integer", "next_offset": "integer", "offset": "integer", "prev_offset": "integer", "total": "integer", "type": "string" } } } ``` {% /tab %} {% /tab %} {% tab title="400" %} Bad Request {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="401" %} Unauthorized {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="403" %} Forbidden {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="429" %} Too many requests {% tab title="Model" %} API error response. | Field | Type | Description | | ------------------------ | -------- | ----------------- | | errors [*required*] | [string] | A list of errors. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ "Bad Request" ] } ``` {% /tab %} {% /tab %} ### Code Example ##### \# Use a Personal Access Token or Service Access Token export DD_BEARER_TOKEN="" \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/experiments/metric-collections" \ -H "Accept: application/json" \ -H "Authorization: Bearer ${DD_BEARER_TOKEN}" ##### ```python """ List metric collections returns "OK" response """ from os import environ from datadog_api_client import ApiClient, Configuration from datadog_api_client.v2.api.experiments_api import ExperimentsApi configuration = Configuration() configuration.access_token = environ["DD_BEARER_TOKEN"] with ApiClient(configuration) as api_client: api_instance = ExperimentsApi(api_client) response = api_instance.list_metric_collections() 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_BEARER_TOKEN="" python3 "example.py" ##### ```ruby # List metric collections returns "OK" response require "datadog_api_client" DatadogAPIClient.configure do |config| config.access_token = ENV["DD_BEARER_TOKEN"] end api_instance = DatadogAPIClient::V2::ExperimentsAPI.new p api_instance.list_metric_collections() ``` #### 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_BEARER_TOKEN="" rb "example.rb" ##### ```go // List metric collections 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/datadogV2" ) func main() { ctx := datadog.NewDefaultContext(context.Background()) ctx = context.WithValue(ctx, datadog.ContextAccessToken, os.Getenv("DD_BEARER_TOKEN")) configuration := datadog.NewConfiguration() apiClient := datadog.NewAPIClient(configuration) api := datadogV2.NewExperimentsApi(apiClient) resp, r, err := api.ListMetricCollections(ctx, *datadogV2.NewListMetricCollectionsOptionalParameters()) if err != nil { fmt.Fprintf(os.Stderr, "Error when calling `ExperimentsApi.ListMetricCollections`: %v\n", err) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } responseContent, _ := json.MarshalIndent(resp, "", " ") fmt.Fprintf(os.Stdout, "Response from `ExperimentsApi.ListMetricCollections`:\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_BEARER_TOKEN="" go run "main.go" ##### ```java // List metric collections returns "OK" response import com.datadog.api.client.ApiClient; import com.datadog.api.client.ApiException; import com.datadog.api.client.v2.api.ExperimentsApi; import com.datadog.api.client.v2.model.ExperimentsMetricCollectionV2DTOArray; public class Example { public static void main(String[] args) { ApiClient defaultClient = ApiClient.getDefaultApiClient(); defaultClient.setAccessToken(System.getenv("DD_BEARER_TOKEN")); ExperimentsApi apiInstance = new ExperimentsApi(defaultClient); try { ExperimentsMetricCollectionV2DTOArray result = apiInstance.listMetricCollections(); System.out.println(result); } catch (ApiException e) { System.err.println("Exception when calling ExperimentsApi#listMetricCollections"); 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_BEARER_TOKEN="" java "Example.java" ##### ```rust // List metric collections returns "OK" response use datadog_api_client::datadog; use datadog_api_client::datadogV2::api_experiments::ExperimentsAPI; use datadog_api_client::datadogV2::api_experiments::ListMetricCollectionsOptionalParams; #[tokio::main] async fn main() { let configuration = datadog::Configuration::new(); let api = ExperimentsAPI::with_config(configuration); let resp = api .list_metric_collections(ListMetricCollectionsOptionalParams::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_APP_KEY="" cargo run {% /tab %}