flagsmith Features API

openapi: 3.2.0
info:
  title: Flagsmith Admin Features API
  description: The Flagsmith Admin API allows developers to programmatically manage all aspects of their Flagsmith projects. Anything that can be done through the Flagsmith dashboard can also be accomplished via this API, including creating, updating, and deleting projects, environments, feature flags, segments, and users. It uses a secret Organisation API Token for authentication and provides a Swagger interface at api.flagsmith.com/api/v1/docs for interactive exploration.
  version: '1.0'
  contact:
    name: Flagsmith Support
    url: https://www.flagsmith.com/contact-us
  termsOfService: https://www.flagsmith.com/terms-of-service
servers:
- url: https://api.flagsmith.com/api/v1
  description: Flagsmith Production API
security:
- apiKeyAuth: []
tags:
- name: Features
  description: Manage feature flags within a project. Features can be toggled on or off and can have remote configuration values.
paths:
  /projects/{project_id}/features/:
    get:
      operationId: listFeatures
      summary: List features for a project
      description: Retrieves a list of all feature flags defined within a specific project. Returns feature metadata including name, type, description, and default values.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      responses:
        '200':
          description: Successful response containing a list of features
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaginatedResponse'
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Project not found
    post:
      operationId: createFeature
      summary: Create a feature flag
      description: Creates a new feature flag within a project. The feature will be created across all environments with the specified default values.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FeatureInput'
      responses:
        '201':
          description: Feature created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdminFeature'
        '400':
          description: Bad request - validation error
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Project not found
  /projects/{project_id}/features/{feature_id}/:
    get:
      operationId: getFeature
      summary: Get a feature flag
      description: Retrieves the details of a specific feature flag by its ID within a project, including its configuration and multivariate options.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      - $ref: '#/components/parameters/FeatureId'
      responses:
        '200':
          description: Successful response containing the feature details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdminFeature'
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Feature or project not found
    put:
      operationId: updateFeature
      summary: Update a feature flag
      description: Updates the details of an existing feature flag including its name, description, type, and multivariate options.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      - $ref: '#/components/parameters/FeatureId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FeatureInput'
      responses:
        '200':
          description: Feature updated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdminFeature'
        '400':
          description: Bad request - validation error
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Feature or project not found
    delete:
      operationId: deleteFeature
      summary: Delete a feature flag
      description: Permanently deletes a feature flag from a project. This removes the feature from all environments. This action cannot be undone.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      - $ref: '#/components/parameters/FeatureId'
      responses:
        '204':
          description: Feature deleted successfully
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Feature or project not found
  /environments/{environment_api_key}/featurestates/:
    get:
      operationId: listFeatureStates
      summary: List feature states for an environment
      description: Retrieves a list of all feature states within a specific environment. Feature states represent the enabled status and value of each feature flag within the environment.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/EnvironmentApiKey'
      responses:
        '200':
          description: Successful response containing a list of feature states
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaginatedResponse'
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Environment not found
  /environments/{environment_api_key}/featurestates/{feature_state_id}/:
    patch:
      operationId: updateFeatureState
      summary: Update a feature state
      description: Updates the state of a feature flag within a specific environment. Allows toggling the enabled status and changing the feature value.
      tags:
      - Features
      parameters:
      - $ref: '#/components/parameters/EnvironmentApiKey'
      - $ref: '#/components/parameters/FeatureStateId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FeatureStateInput'
      responses:
        '200':
          description: Feature state updated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FeatureState'
        '400':
          description: Bad request - validation error
        '401':
          description: Unauthorized - invalid or missing API token
        '404':
          description: Feature state or environment not found
components:
  schemas:
    FeatureState:
      type: object
      description: The state of a feature flag within a specific environment, including its enabled status and current value.
      properties:
        id:
          type: integer
          description: The unique identifier for this feature state
        feature:
          type: integer
          description: The ID of the feature
        enabled:
          type: boolean
          description: Whether the feature is currently enabled
        feature_state_value:
          description: The current value of the feature state
          oneOf:
          - type: string
          - type: integer
          - type: boolean
          - type: 'null'
        environment:
          type: integer
          description: The ID of the environment
        identity:
          type: integer
          nullable: true
          description: The identity ID for identity overrides
        feature_segment:
          type: integer
          nullable: true
          description: The feature segment ID for segment overrides
    FeatureInput:
      type: object
      description: Input object for creating or updating a feature flag
      required:
      - name
      properties:
        name:
          type: string
          description: The name of the feature flag
          maxLength: 2000
          pattern: ^[-_.a-zA-Z0-9]+$
        description:
          type: string
          nullable: true
          description: A human-readable description of the feature
        initial_value:
          type: string
          nullable: true
          description: The initial value for the feature
        default_enabled:
          type: boolean
          description: Whether the feature is enabled by default
        type:
          type: string
          enum:
          - STANDARD
          - MULTIVARIATE
          description: The type of feature flag
        is_archived:
          type: boolean
          description: Whether the feature is archived
        tags:
          type: array
          description: Tag IDs to associate with this feature
          items:
            type: integer
    FeatureStateInput:
      type: object
      description: Input object for updating a feature state
      properties:
        enabled:
          type: boolean
          description: Whether the feature should be enabled
        feature_state_value:
          description: The value to set for this feature state
          oneOf:
          - type: string
          - type: integer
          - type: boolean
          - type: 'null'
    PaginatedResponse:
      type: object
      description: A paginated response wrapper containing the results count and navigation links.
      properties:
        count:
          type: integer
          description: The total number of results
        next:
          type: string
          nullable: true
          format: uri
          description: URL to the next page of results
        previous:
          type: string
          nullable: true
          format: uri
          description: URL to the previous page of results
        results:
          type: array
          description: The array of result objects for this page
          items:
            type: object
    AdminFeature:
      type: object
      description: A feature flag definition in the admin API containing full metadata and configuration options.
      properties:
        id:
          type: integer
          description: The unique identifier for this feature
        name:
          type: string
          description: The name of the feature flag
        created_date:
          type: string
          format: date-time
          description: When the feature was created
        description:
          type: string
          nullable: true
          description: A human-readable description of the feature
        initial_value:
          type: string
          nullable: true
          description: The initial value assigned to the feature
        default_enabled:
          type: boolean
          description: Whether the feature is enabled by default
        type:
          type: string
          enum:
          - STANDARD
          - MULTIVARIATE
          description: The type of feature flag
        project:
          type: integer
          description: The ID of the project this feature belongs to
        is_archived:
          type: boolean
          description: Whether the feature is archived
        owners:
          type: array
          description: Users who own this feature
          items:
            type: object
            properties:
              id:
                type: integer
                description: The user ID
              email:
                type: string
                description: The user email
        tags:
          type: array
          description: Tags associated with this feature
          items:
            type: integer
        multivariate_options:
          type: array
          description: Multivariate options for this feature
          items:
            $ref: '#/components/schemas/MultivariateOption'
    MultivariateOption:
      type: object
      description: A multivariate option representing one of the possible values for a multivariate feature flag.
      properties:
        id:
          type: integer
          description: The unique identifier for this option
        type:
          type: string
          description: The data type of the option value
        string_value:
          type: string
          nullable: true
          description: The string value of this option
        integer_value:
          type: integer
          nullable: true
          description: The integer value of this option
        boolean_value:
          type: boolean
          nullable: true
          description: The boolean value of this option
        default_percentage_allocation:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: The default percentage of users who will receive this option
  parameters:
    FeatureStateId:
      name: feature_state_id
      in: path
      description: The unique identifier for the feature state
      required: true
      schema:
        type: integer
    EnvironmentApiKey:
      name: environment_api_key
      in: path
      description: The API key for the environment
      required: true
      schema:
        type: string
    ProjectId:
      name: project_id
      in: path
      description: The unique identifier for the project
      required: true
      schema:
        type: integer
    FeatureId:
      name: feature_id
      in: path
      description: The unique identifier for the feature
      required: true
      schema:
        type: integer
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: A secret Organisation API Token prefixed with 'Api-Key'. For example, 'Api-Key your-token-here'. This token should never be exposed in client-side code.
externalDocs:
  description: Flagsmith Admin API Documentation
  url: https://docs.flagsmith.com/integrating-with-flagsmith/flagsmith-api-overview/admin-api