--- 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 %} Copy pageCopied {% 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}" {% /tab %}