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---
stage: none
group: unassigned
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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
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---
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# Custom Attributes API
Every API call to custom attributes must be authenticated as administrator.
Custom attributes are currently available on users, groups, and projects,
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which is referred to as "resource" in this documentation.
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## List custom attributes
Get all custom attributes on a resource.
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```plaintext
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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 |
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```shell
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curl --header "PRIVATE-TOKEN: < your_access_token > " "https://gitlab.example.com/api/v4/users/42/custom_attributes"
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```
Example response:
```json
[
{
"key": "location",
"value": "Antarctica"
},
{
"key": "role",
"value": "Developer"
}
]
```
## Single custom attribute
Get a single custom attribute on a resource.
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```plaintext
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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 |
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```shell
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curl --header "PRIVATE-TOKEN: < your_access_token > " "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
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```
Example response:
```json
{
"key": "location",
"value": "Antarctica"
}
```
## Set custom attribute
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Set a custom attribute on a resource. The attribute is updated if it already exists,
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or newly created otherwise.
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```plaintext
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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 |
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```shell
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curl --request PUT --header "PRIVATE-TOKEN: < your_access_token > " --data "value=Greenland" "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
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```
Example response:
```json
{
"key": "location",
"value": "Greenland"
}
```
## Delete custom attribute
Delete a custom attribute on a resource.
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```plaintext
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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 |
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```shell
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curl --request DELETE --header "PRIVATE-TOKEN: < your_access_token > " "https://gitlab.example.com/api/v4/users/42/custom_attributes/location"
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```