---
title: Create subject type
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 %}

# Create subject type{% #create-subject-type %}

{% tab title="v2" %}

| Datadog site      | API endpoint                                                        |
| ----------------- | ------------------------------------------------------------------- |
| ap1.datadoghq.com | POST https://api.ap1.datadoghq.com/api/v2/experiments/subject-types |
| ap2.datadoghq.com | POST https://api.ap2.datadoghq.com/api/v2/experiments/subject-types |
| app.datadoghq.eu  | POST https://api.datadoghq.eu/api/v2/experiments/subject-types      |
| app.ddog-gov.com  | POST https://api.ddog-gov.com/api/v2/experiments/subject-types      |
| us2.ddog-gov.com  | POST https://api.us2.ddog-gov.com/api/v2/experiments/subject-types  |
| uk1.datadoghq.com | POST https://api.uk1.datadoghq.com/api/v2/experiments/subject-types |
| app.datadoghq.com | POST https://api.datadoghq.com/api/v2/experiments/subject-types     |
| us3.datadoghq.com | POST https://api.us3.datadoghq.com/api/v2/experiments/subject-types |
| us5.datadoghq.com | POST https://api.us5.datadoghq.com/api/v2/experiments/subject-types |

### Overview

Create a subject type for the organization. This endpoint requires the `product_analytics_settings_write` permission.

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



### Request

#### Body Data (required)



{% tab title="Model" %}

| Parent field | Field                        | Type     | Description                                                         |
| ------------ | ---------------------------- | -------- | ------------------------------------------------------------------- |
|              | data [*required*]       | object   | Subject type resource to create.                                    |
| data         | attributes [*required*] | object   | Name and data field mappings for the new subject type.              |
| attributes   | migration_metadata           |          | Metadata associated with migration of this resource.                |
| attributes   | name [*required*]       | string   | Display name of the subject type.                                   |
| attributes   | product_analytics_attribute  | string   | Product Analytics attribute used to identify subjects of this type. |
| attributes   | warehouse_column_names       | [string] | Warehouse column names associated with this subject type.           |
| data         | id                           | string   | Optional JSON:API resource identifier field.                        |
| data         | type [*required*]       | enum     | Subject types resource type. Allowed enum values: `subject-types`   |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": {
    "type": "subject-types",
    "attributes": {
      "name": "ex-14bb9543f523edde",
      "product_analytics_attribute": "@account.id",
      "warehouse_column_names": [
        "account_id"
      ]
    }
  }
}
```

{% /tab %}

### Response

{% tab title="201" %}
Created
{% tab title="Model" %}
Response containing the subject type.

| Parent field | Field                       | Type      | Description                                                         |
| ------------ | --------------------------- | --------- | ------------------------------------------------------------------- |
|              | data [*required*]      | object    | JSON:API resource containing the subject type identity and fields.  |
| data         | attributes                  | object    | Details of the subject type.                                        |
| attributes   | created_at                  | date-time | Time when this resource was created.                                |
| attributes   | experiment_count            | int64     | Number of experiments that reference this resource.                 |
| attributes   | exposure_source_count       | int64     | Number of exposure sources that reference this subject type.        |
| attributes   | is_default                  | boolean   | Whether this is the organization's default subject type.            |
| attributes   | metric_sql_model_count      | int64     | Number of metric SQL models that reference this subject type.       |
| attributes   | migration_metadata          |           | Metadata retained for resources imported from another system.       |
| attributes   | name                        | string    | Display name of the subject type.                                   |
| attributes   | product_analytics_attribute | string    | Product Analytics attribute used to identify subjects of this type. |
| attributes   | protocol_count              | int64     | Number of protocols that reference this subject type.               |
| attributes   | updated_at                  | date-time | Time when this resource was last updated.                           |
| attributes   | warehouse_column_names      | [string]  | Warehouse columns that identify subjects of this type.              |
| data         | id [*required*]        | uuid      | ID of the subject type.                                             |
| data         | type [*required*]      | enum      | Subject types resource type. Allowed enum values: `subject-types`   |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": {
    "attributes": {
      "created_at": "2024-01-01T12:00:00Z",
      "is_default": true,
      "name": "User",
      "product_analytics_attribute": "@usr.id",
      "updated_at": "2024-01-01T12:00:00Z",
      "warehouse_column_names": [
        "user_id",
        "customer_id"
      ]
    },
    "id": "550e8400-e29b-41d4-a716-446655440010",
    "type": "subject-types"
  }
}
```

{% /tab %}

{% /tab %}

{% tab title="400" %}
Malformed body, or validation failure on name, product_analytics_attribute, or warehouse_column_names.
{% 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" %}
Missing or invalid authentication.
{% 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" %}
Authenticated caller lacks the product_analytics_settings_write permission.
{% 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

##### 
                          \## default
# 
 \# Use a Personal Access Token or Service Access Token export DD_BEARER_TOKEN="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>"  \# Curl command curl -X POST "https://api.datadoghq.com/api/v2/experiments/subject-types" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${DD_BEARER_TOKEN}" \
-d @- << EOF
{
  "data": {
    "attributes": {
      "name": "User",
      "product_analytics_attribute": "@usr.id",
      "warehouse_column_names": [
        "user_id",
        "customer_id"
      ]
    },
    "type": "subject-types"
  }
}
EOF 

                        
##### 

```go
// Create subject type returns "Created" 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() {
	body := datadogV2.ExperimentsCreateSubjectTypeV2Request{
		Data: datadogV2.ExperimentsCreateSubjectTypeV2RequestData{
			Type: datadogV2.EXPERIMENTSSUBJECTTYPEV2DTODATATYPE_SUBJECT_TYPES,
			Attributes: datadogV2.ExperimentsCreateSubjectTypeV2RequestDataAttributes{
				Name:                      "ex-14bb9543f523edde",
				ProductAnalyticsAttribute: datadog.PtrString("@account.id"),
				WarehouseColumnNames: []string{
					"account_id",
				},
			},
		},
	}
	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.CreateSubjectType(ctx, body)

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

	responseContent, _ := json.MarshalIndent(resp, "", "  ")
	fmt.Fprintf(os.Stdout, "Response from `ExperimentsApi.CreateSubjectType`:\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="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>" go run "main.go"
##### 

```java
// Create subject type returns "Created" 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.ExperimentsCreateSubjectTypeV2Request;
import com.datadog.api.client.v2.model.ExperimentsCreateSubjectTypeV2RequestData;
import com.datadog.api.client.v2.model.ExperimentsCreateSubjectTypeV2RequestDataAttributes;
import com.datadog.api.client.v2.model.ExperimentsSubjectTypeV2DTO;
import com.datadog.api.client.v2.model.ExperimentsSubjectTypeV2DTODataType;
import java.util.Collections;

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);

    ExperimentsCreateSubjectTypeV2Request body =
        new ExperimentsCreateSubjectTypeV2Request()
            .data(
                new ExperimentsCreateSubjectTypeV2RequestData()
                    .type(ExperimentsSubjectTypeV2DTODataType.SUBJECT_TYPES)
                    .attributes(
                        new ExperimentsCreateSubjectTypeV2RequestDataAttributes()
                            .name("ex-14bb9543f523edde")
                            .productAnalyticsAttribute("@account.id")
                            .warehouseColumnNames(Collections.singletonList("account_id"))));

    try {
      ExperimentsSubjectTypeV2DTO result = apiInstance.createSubjectType(body);
      System.out.println(result);
    } catch (ApiException e) {
      System.err.println("Exception when calling ExperimentsApi#createSubjectType");
      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="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>" java "Example.java"
##### 

```python
"""
Create subject type returns "Created" response
"""

from os import environ
from datadog_api_client import ApiClient, Configuration
from datadog_api_client.v2.api.experiments_api import ExperimentsApi
from datadog_api_client.v2.model.experiments_create_subject_type_v2_request import ExperimentsCreateSubjectTypeV2Request
from datadog_api_client.v2.model.experiments_create_subject_type_v2_request_data import (
    ExperimentsCreateSubjectTypeV2RequestData,
)
from datadog_api_client.v2.model.experiments_create_subject_type_v2_request_data_attributes import (
    ExperimentsCreateSubjectTypeV2RequestDataAttributes,
)
from datadog_api_client.v2.model.experiments_subject_type_v2_dto_data_type import ExperimentsSubjectTypeV2DTODataType

body = ExperimentsCreateSubjectTypeV2Request(
    data=ExperimentsCreateSubjectTypeV2RequestData(
        type=ExperimentsSubjectTypeV2DTODataType.SUBJECT_TYPES,
        attributes=ExperimentsCreateSubjectTypeV2RequestDataAttributes(
            name="ex-14bb9543f523edde",
            product_analytics_attribute="@account.id",
            warehouse_column_names=[
                "account_id",
            ],
        ),
    ),
)

configuration = Configuration()
configuration.access_token = environ["DD_BEARER_TOKEN"]
with ApiClient(configuration) as api_client:
    api_instance = ExperimentsApi(api_client)
    response = api_instance.create_subject_type(body=body)

    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="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>" python3 "example.py"
##### 

```ruby
# Create subject type returns "Created" response

require "datadog_api_client"
DatadogAPIClient.configure do |config|
  config.access_token = ENV["DD_BEARER_TOKEN"]
end
api_instance = DatadogAPIClient::V2::ExperimentsAPI.new

body = DatadogAPIClient::V2::ExperimentsCreateSubjectTypeV2Request.new({
  data: DatadogAPIClient::V2::ExperimentsCreateSubjectTypeV2RequestData.new({
    type: DatadogAPIClient::V2::ExperimentsSubjectTypeV2DTODataType::SUBJECT_TYPES,
    attributes: DatadogAPIClient::V2::ExperimentsCreateSubjectTypeV2RequestDataAttributes.new({
      name: "ex-14bb9543f523edde",
      product_analytics_attribute: "@account.id",
      warehouse_column_names: [
        "account_id",
      ],
    }),
  }),
})
p api_instance.create_subject_type(body)
```

#### 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="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>" rb "example.rb"
##### 

```rust
// Create subject type returns "Created" response
use datadog_api_client::datadog;
use datadog_api_client::datadogV2::api_experiments::ExperimentsAPI;
use datadog_api_client::datadogV2::model::ExperimentsCreateSubjectTypeV2Request;
use datadog_api_client::datadogV2::model::ExperimentsCreateSubjectTypeV2RequestData;
use datadog_api_client::datadogV2::model::ExperimentsCreateSubjectTypeV2RequestDataAttributes;
use datadog_api_client::datadogV2::model::ExperimentsSubjectTypeV2DTODataType;

#[tokio::main]
async fn main() {
    let body =
        ExperimentsCreateSubjectTypeV2Request::new(ExperimentsCreateSubjectTypeV2RequestData::new(
            ExperimentsCreateSubjectTypeV2RequestDataAttributes::new(
                "ex-14bb9543f523edde".to_string(),
            )
            .product_analytics_attribute("@account.id".to_string())
            .warehouse_column_names(vec!["account_id".to_string()]),
            ExperimentsSubjectTypeV2DTODataType::SUBJECT_TYPES,
        ));
    let configuration = datadog::Configuration::new();
    let api = ExperimentsAPI::with_config(configuration);
    let resp = api.create_subject_type(body).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
{% /tab %}