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# Features flags API
This API is for managing Flipper-based [feature flags used in development of GitLab](../development/feature_flags/index.md).
All methods require administrator authorization.
Notice that currently the API only supports boolean and percentage-of-time gate
values.
## List all features
Get a list of all persisted features, with its gate values.
```plaintext
GET /features
```
```shell
curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/features
```
Example response:
```json
[
{
"name": "experimental_feature",
"state": "off",
"gates": [
{
"key": "boolean",
"value": false
}
]
},
{
"name": "my_user_feature",
"state": "on",
"gates": [
{
"key": "percentage_of_actors",
"value": 34
}
]
},
{
"name": "new_library",
"state": "on",
"gates": [
{
"key": "boolean",
"value": true
}
]
}
]
```
## Set or create a feature
Set a feature's gate value. If a feature with the given name doesn't exist yet
it will be created. The value can be a boolean, or an integer to indicate
percentage of time.
```plaintext
POST /features/:name
```
| Attribute | Type | Required | Description |
| --------- | ---- | -------- | ----------- |
| `name` | string | yes | Name of the feature to create or update |
| `value` | integer/string | yes | `true` or `false` to enable/disable, or an integer for percentage of time |
| `key` | string | no | `percentage_of_actors` or `percentage_of_time` (default) |
| `feature_group` | string | no | A Feature group name |
| `user` | string | no | A GitLab username |
| `group` | string | no | A GitLab group's path, for example `gitlab-org` |
| `project` | string | no | A projects path, for example `gitlab-org/gitlab-foss` |
Note that you can enable or disable a feature for a `feature_group`, a `user`,
a `group`, and a `project` in a single API call.
```shell
curl --data "value=30" --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/features/new_library
```
Example response:
```json
{
"name": "new_library",
"state": "conditional",
"gates": [
{
"key": "boolean",
"value": false
},
{
"key": "percentage_of_time",
"value": 30
}
]
}
```
### Set percentage of actors rollout
Rollout to percentage of actors.
```plaintext
POST https://gitlab.example.com/api/v4/features/my_user_feature?private_token=<your_access_token>
Content-Type: application/x-www-form-urlencoded
value=42&key=percentage_of_actors&
```
Example response:
```json
{
"name": "my_user_feature",
"state": "conditional",
"gates": [
{
"key": "boolean",
"value": false
},
{
"key": "percentage_of_actors",
"value": 42
}
]
}
```
Rolls out the `my_user_feature` to `42%` of actors.
## Delete a feature
Removes a feature gate. Response is equal when the gate exists, or doesn't.
```plaintext
DELETE /features/:name
```
|
