openapi: 3.1.0
info:
  title: Eppo Cloud REST Allocations Flags API
  version: 1.0.0
  description: REST API for the Eppo feature flagging and experimentation platform. Used to manage feature flags, allocations, experiments, metrics, assignments, and platform configuration outside of the Eppo web UI. Best-effort spec derived from publicly documented surfaces; not exhaustive.
  contact:
    name: Eppo Support
    url: https://docs.geteppo.com/
  license:
    name: Proprietary
servers:
- url: https://eppo.cloud/api/v1
  description: Eppo Cloud production base URL
security:
- eppoToken: []
tags:
- name: Flags
paths:
  /flags:
    get:
      tags:
      - Flags
      summary: List feature flags
      operationId: listFlags
      responses:
        '200':
          description: Flags list
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Flag'
    post:
      tags:
      - Flags
      summary: Create a feature flag
      operationId: createFlag
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Flag'
      responses:
        '201':
          description: Flag created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Flag'
  /flags/{flagKey}:
    parameters:
    - in: path
      name: flagKey
      required: true
      schema:
        type: string
    get:
      tags:
      - Flags
      summary: Get a feature flag by key
      operationId: getFlag
      responses:
        '200':
          description: Flag detail
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Flag'
    patch:
      tags:
      - Flags
      summary: Update a feature flag
      operationId: updateFlag
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Flag'
      responses:
        '200':
          description: Updated flag
    delete:
      tags:
      - Flags
      summary: Delete a feature flag
      operationId: deleteFlag
      responses:
        '204':
          description: Flag deleted
components:
  schemas:
    Flag:
      type: object
      properties:
        key:
          type: string
        name:
          type: string
        description:
          type: string
        enabled:
          type: boolean
        variationType:
          type: string
          enum:
          - BOOLEAN
          - STRING
          - NUMERIC
          - JSON
        variations:
          type: array
          items:
            type: object
            properties:
              key:
                type: string
              value:
                oneOf:
                - type: boolean
                - type: string
                - type: number
                - type: object
  securitySchemes:
    eppoToken:
      type: apiKey
      in: header
      name: X-Eppo-Token
      description: Eppo REST API key created in Admin > API Keys. Distinct from Eppo SDK keys used to connect SDK clients.