openapi: 3.1.0
info:
  title: Eppo Cloud REST Allocations 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: Allocations
paths:
  /flags/{flagKey}/allocations:
    parameters:
    - in: path
      name: flagKey
      required: true
      schema:
        type: string
    get:
      tags:
      - Allocations
      summary: List allocations for a flag
      operationId: listAllocations
      responses:
        '200':
          description: Allocations list
    post:
      tags:
      - Allocations
      summary: Create an allocation
      operationId: createAllocation
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Allocation'
      responses:
        '201':
          description: Allocation created
components:
  schemas:
    Allocation:
      type: object
      properties:
        key:
          type: string
        name:
          type: string
        flagKey:
          type: string
        startsAt:
          type: string
          format: date-time
        endsAt:
          type: string
          format: date-time
        doLog:
          type: boolean
        rules:
          type: array
          items:
            type: object
        splits:
          type: array
          items:
            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.