---
title: "Get credential owner"
slug: "get-caller-identity"
tags: ["Secure Token Service"]
updated: 2026-09-17T10:05:35Z
published: 2026-09-17T10:05:35Z
canonical: "api.ncloud-docs.com/get-caller-identity"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get credential owner

Available in Classic and VPC

Get the owner of an access key.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| GET | /api/v1/caller-identity |

### Request headers

For information about the headers common to all Secure Token Service APIs, see [Secure Token Service request headers](/docs/en/management-sts#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request example

The request example is as follows:

```
curl --location --request GET 'https://sts.apigw.ntruss.com/api/v1/caller-identity' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}' \
--header 'Content-Type: application/json'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | String | - | Unique identifier of the access key owner |
| `loginAlias` | String | - | Access page URL of the access key owner |
| `userType` | String | - | Access key owner type - `Customer` \| `Sub` \| `Role` - `Customer`: main account - `Sub`: sub account - `Role`: role-switched temporary credentials |

### Response status codes

For information about the HTTP status codes common to all Secure Token Service APIs, see [Secure Token Service response status codes](/docs/en/management-sts#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
{
    "id": "e***-e***-1***-8***-2***",
    "loginAlias": "test1010",
    "userType": "Sub"
}
```