openapi: 3.1.0
info:
  title: Eppo Cloud REST Allocations Experiments 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: Experiments
paths:
  /experiments:
    get:
      tags:
      - Experiments
      summary: List experiments
      operationId: listExperiments
      parameters:
      - in: query
        name: status
        schema:
          type: string
          enum:
          - draft
          - running
          - completed
          - archived
      responses:
        '200':
          description: Experiments list
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Experiment'
    post:
      tags:
      - Experiments
      summary: Create an experiment
      operationId: createExperiment
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Experiment'
      responses:
        '201':
          description: Experiment created
  /experiments/{experimentId}:
    parameters:
    - in: path
      name: experimentId
      required: true
      schema:
        type: string
    get:
      tags:
      - Experiments
      summary: Get experiment detail
      operationId: getExperiment
      responses:
        '200':
          description: Experiment
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Experiment'
components:
  schemas:
    Experiment:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        description:
          type: string
        status:
          type: string
        startDate:
          type: string
          format: date-time
        endDate:
          type: string
          format: date-time
        primaryMetricId:
          type: string
        subjectEntityKey:
          type: string
        variations:
          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.