openapi: 3.1.0
info:
  title: Eppo Cloud REST Allocations Assignments 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: Assignments
paths:
  /assignments:
    post:
      tags:
      - Assignments
      summary: Ingest assignment events
      operationId: ingestAssignments
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: array
              items:
                type: object
                properties:
                  experiment:
                    type: string
                  subject:
                    type: string
                  variation:
                    type: string
                  timestamp:
                    type: string
                    format: date-time
      responses:
        '202':
          description: Assignments accepted
components:
  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.