---
title: Get a Cloud Cost Management tag description
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > API Reference > Cloud Cost Management
---

# Get a Cloud Cost Management tag description{% #get-a-cloud-cost-management-tag-description %}
Copy pageCopied
{% tab title="v2" %}

| Datadog site      | API endpoint                                                             |
| ----------------- | ------------------------------------------------------------------------ |
| ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/cost/tag_descriptions/{tag_key} |
| ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/cost/tag_descriptions/{tag_key} |
| app.datadoghq.eu  | GET https://api.datadoghq.eu/api/v2/cost/tag_descriptions/{tag_key}      |
| app.ddog-gov.com  | GET https://api.ddog-gov.com/api/v2/cost/tag_descriptions/{tag_key}      |
| us2.ddog-gov.com  | GET https://api.us2.ddog-gov.com/api/v2/cost/tag_descriptions/{tag_key}  |
| app.datadoghq.com | GET https://api.datadoghq.com/api/v2/cost/tag_descriptions/{tag_key}     |
| us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/cost/tag_descriptions/{tag_key} |
| us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/cost/tag_descriptions/{tag_key} |

### Overview

Get the Cloud Cost Management description for a single tag key. Use `filter[cloud]` to scope the lookup to a specific cloud provider; when omitted, the response resolves the description in fallback order (cloud-specific organization override, then cloudless organization default, then Datadog's global default). 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

#### Path Parameters

| Name                      | Type   | Description                                     |
| ------------------------- | ------ | ----------------------------------------------- |
| tag_key [*required*] | string | The tag key whose description is being fetched. |

#### Query Strings

| Name          | Type   | Description                                                                                    |
| ------------- | ------ | ---------------------------------------------------------------------------------------------- |
| filter[cloud] | string | Cloud provider to scope the lookup to (for example, `aws`). Omit to use the resolved fallback. |

### Response

{% tab title="200" %}
OK
{% tab title="Model" %}
Single Cloud Cost Management tag key description returned by the get-by-key endpoint.

| Parent field | Field                         | Type   | Description                                                                                                                                                                                                              |
| ------------ | ----------------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
|              | data [*required*]        | object | A Cloud Cost Management tag key description, either cross-cloud or scoped to a single cloud provider.                                                                                                                    |
| data         | attributes [*required*]  | object | Human-readable description and metadata attached to a Cloud Cost Management tag key, optionally scoped to a single cloud provider.                                                                                       |
| attributes   | cloud [*required*]       | string | Cloud provider this description applies to (for example, `aws`). Empty when the description is the cross-cloud default for the tag key.                                                                                  |
| attributes   | created_at [*required*]  | string | Timestamp when the description was created, in RFC 3339 format.                                                                                                                                                          |
| attributes   | description [*required*] | string | The human-readable description for the tag key.                                                                                                                                                                          |
| attributes   | source [*required*]      | enum   | Origin of the description. `human` indicates the description was written by a user, `ai_generated` was produced by AI, and `datadog` is a default supplied by Datadog. Allowed enum values: `human,ai_generated,datadog` |
| attributes   | tag_key [*required*]     | string | The tag key this description applies to.                                                                                                                                                                                 |
| attributes   | updated_at [*required*]  | string | Timestamp when the description was last updated, in RFC 3339 format.                                                                                                                                                     |
| data         | id [*required*]          | string | Stable identifier of the tag description. Equals the tag key when the description is the cross-cloud default; encodes both the cloud and the tag key when the description is cloud-specific.                             |
| data         | type [*required*]        | enum   | Type of the Cloud Cost Management tag description resource. Allowed enum values: `cost_tag_description`                                                                                                                  |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": {
    "attributes": {
      "cloud": "aws",
      "created_at": "2026-01-01T12:00:00Z",
      "description": "AWS account that owns this cost.",
      "source": "human",
      "tag_key": "account_id",
      "updated_at": "2026-01-01T12:00:00Z"
    },
    "id": "account_id",
    "type": "cost_tag_description"
  }
}
```

{% /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="404" %}
Not Found
{% 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

##### 
                  \# Path parameters export tag_key="CHANGE_ME" \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/cost/tag_descriptions/${tag_key}" \
-H "Accept: application/json" \
-H "DD-API-KEY: ${DD_API_KEY}" \
-H "DD-APPLICATION-KEY: ${DD_APP_KEY}" 
                
{% /tab %}