---
stage: Ecosystem
group: Integrations
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
---

# Custom Attributes API **(FREE SELF)**

Every API call to custom attributes must be authenticated as administrator.

Custom attributes are currently available on users, groups, and projects,
which is referred to as "resource" in this documentation.

## List custom attributes

Get all custom attributes on a resource.

```plaintext
GET /users/:id/custom_attributes
GET /groups/:id/custom_attributes
GET /projects/:id/custom_attributes
```

| Attribute | Type | Required | Description |
| --------- | ---- | -------- | ----------- |
| `id` | integer | yes | The ID of a resource |

```shell
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/users/42/custom_attributes"
```

Example response:

```json
[
   {
      "key": "location",
      "value": "Antarctica"
   },
   {
      "key": "role",
      "value": "Developer"
   }
]
```

## Single custom attribute

Get a single custom attribute on a resource.

```plaintext
GET /users/:id/custom_attributes/:key
GET /groups/:id/custom_attributes/:key
GET /projects/:id/custom_attributes/:key
```

| Attribute | Type | Required | Description |
| --------- | ---- | -------- | ----------- |
| `id` | integer | yes | The ID of a resource |
| `key` | string | yes | The key of the custom attribute |

```shell
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
```

Example response:

```json
{
   "key": "location",
   "value": "Antarctica"
}
```

## Set custom attribute

Set a custom attribute on a resource. The attribute is updated if it already exists,
or newly created otherwise.

```plaintext
PUT /users/:id/custom_attributes/:key
PUT /groups/:id/custom_attributes/:key
PUT /projects/:id/custom_attributes/:key
```

| Attribute | Type | Required | Description |
| --------- | ---- | -------- | ----------- |
| `id` | integer | yes | The ID of a resource |
| `key` | string | yes | The key of the custom attribute |
| `value` | string | yes | The value of the custom attribute |

```shell
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
     --data "value=Greenland" "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
```

Example response:

```json
{
   "key": "location",
   "value": "Greenland"
}
```

## Delete custom attribute

Delete a custom attribute on a resource.

```plaintext
DELETE /users/:id/custom_attributes/:key
DELETE /groups/:id/custom_attributes/:key
DELETE /projects/:id/custom_attributes/:key
```

| Attribute | Type | Required | Description |
| --------- | ---- | -------- | ----------- |
| `id` | integer | yes | The ID of a resource |
| `key` | string | yes | The key of the custom attribute |

```shell
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
```