gitlab-org--gitlab-foss/doc/api/features.md

Features flags API

This API is for managing Flipper-based feature flags used in development of GitLab.

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.

GET /features

curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/features"

Example response:

[
  {
    "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.

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.

curl --data "value=30" --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/features/new_library"

Example response:

{
  "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.

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:

{
  "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.

DELETE /features/:name