--- title: List Cloud Cost Management tag key metadata description: Datadog, the leading service for cloud-scale monitoring. breadcrumbs: Docs > API Reference > Cloud Cost Management --- # List Cloud Cost Management tag key metadata{% #list-cloud-cost-management-tag-key-metadata %} Copy pageCopied {% tab title="v2" %} **Note**: This endpoint is in preview and is subject to change. If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/). | Datadog site | API endpoint | | ----------------- | ---------------------------------------------------------- | | ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/cost/tag_metadata | | ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/cost/tag_metadata | | app.datadoghq.eu | GET https://api.datadoghq.eu/api/v2/cost/tag_metadata | | app.ddog-gov.com | GET https://api.ddog-gov.com/api/v2/cost/tag_metadata | | us2.ddog-gov.com | GET https://api.us2.ddog-gov.com/api/v2/cost/tag_metadata | | app.datadoghq.com | GET https://api.datadoghq.com/api/v2/cost/tag_metadata | | us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/cost/tag_metadata | | us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/cost/tag_metadata | ### Overview List Cloud Cost Management tag key metadata, including row counts, cost covered, cardinality, and a sample of top tag values per cloud account. Use `filter[daily]=true` to return daily rows instead of the default monthly roll-up. This endpoint requires the `cloud_cost_management_read` permission. OAuth apps require the `cloud_cost_management_read` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#cloud-cost-management) to access this endpoint. ### Arguments #### Query Strings | Name | Type | Description | | ------------------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | filter[month] [*required*] | string | The month to scope the query to, in `YYYY-MM` format. | | filter[provider] | string | Filter results to a specific provider. Common cloud values are `aws`, `azure`, `gcp`, `Oracle` (OCI), and `custom`. SaaS billing integrations (for example, `Snowflake`, `MongoDB`, `Databricks`) are also accepted using their display-name string. Values are case-sensitive. | | filter[metric] | string | Filter results to a specific Cloud Cost Management metric (for example, `aws.cost.net.amortized`). When omitted, every available metric for the requested period is returned. | | filter[tag_key] | string | Restrict results to a single tag key. | | filter[daily] | enum | When `true`, return one row per day with the day in the `date` attribute. Defaults to the monthly roll-up when omitted. Allowed enum values: `true, false` | ### Response {% tab title="200" %} OK {% tab title="Model" %} List of Cloud Cost Management tag key metadata entries for the requested period. | Parent field | Field | Type | Description | | -------------------- | ---------------------------------------- | -------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- | | | data [*required*] | [object] | List of tag key metadata entries. | | data | attributes [*required*] | object | Attributes of a Cloud Cost Management tag key metadata entry. | | attributes | cardinality_by_account [*required*] | object | Number of unique tag values observed for this tag key, keyed by cloud account ID. | | additionalProperties | | int64 | Number of unique tag values observed in the account. | | attributes | cost_covered [*required*] | double | Total cost (in the report currency) of cost line items that carry this tag key for the requested period. | | attributes | date | string | The day this row corresponds to, in `YYYY-MM-DD` format. Present only when `filter[daily]=true`; omitted for the monthly roll-up returned by default. | | attributes | metric [*required*] | string | The Cloud Cost Management metric this row aggregates, for example `aws.cost.net.amortized`. | | attributes | row_count [*required*] | int64 | Number of cost rows that carry this tag key over the requested period. | | attributes | tag_sources [*required*] | [string] | Origins where this tag key was observed (for example, `aws-user-defined`). | | attributes | top_values_by_account [*required*] | object | A sample of the most frequent tag values observed for this tag key, keyed by cloud account ID. | | additionalProperties | | [string] | A sample of the most frequent tag values observed in the account. | | data | id [*required*] | string | A composite identifier of the form `tag_key:metric` for monthly roll-ups, or `tag_key:metric:YYYY-MM-DD` when `filter[daily]=true`. | | data | type [*required*] | enum | Type of the Cloud Cost Management tag key metadata resource. Allowed enum values: `cost_tag_key_metadata` | {% /tab %} {% tab title="Example" %} ```json { "data": [ { "attributes": { "cardinality_by_account": { "123456789012": 42 }, "cost_covered": 1234.56, "metric": "aws.cost.net.amortized", "row_count": 100, "tag_sources": [ "aws-user-defined" ], "top_values_by_account": { "123456789012": [ "prod", "staging" ] } }, "id": "env:aws.cost.net.amortized", "type": "cost_tag_key_metadata" } ] } ``` {% /tab %} {% /tab %} {% tab title="400" %} Bad Request {% 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 %} {% tab title="403" %} Forbidden {% 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 %} {% 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 ##### \# Required query arguments export filter[month]="2026-02" \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/cost/tag_metadata?filter[month]=${filter[month]}" \ -H "Accept: application/json" \ -H "DD-API-KEY: ${DD_API_KEY}" \ -H "DD-APPLICATION-KEY: ${DD_APP_KEY}" {% /tab %}