openapi: 3.1.0
info:
  title: Memesio API Contracts agent-infra history API
  version: 0.1.0
  description: Contract baseline for AI jobs, trend alerts, collaboration, and billing surfaces.
servers:
- url: /
tags:
- name: history
paths:
  /api/ai/edit-history:
    get:
      summary: List or Compare Versioned AI Edit History for a Layer
      tags:
      - history
      parameters:
      - name: projectId
        in: query
        required: true
        schema:
          type: string
      - name: layerId
        in: query
        required: true
        schema:
          type: string
      - name: mode
        in: query
        schema:
          type: string
          enum:
          - list
          - compare
      - name: limit
        in: query
        schema:
          type: integer
          minimum: 1
          maximum: 500
      - name: fromVersionId
        in: query
        schema:
          type: string
      - name: toVersionId
        in: query
        schema:
          type: string
      responses:
        '200':
          description: Layer history payload
        '404':
          description: Versions not found for comparison
    post:
      summary: Record or Rollback Versioned AI Edit State for a Layer
      tags:
      - history
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - action
              - projectId
              - layerId
              properties:
                action:
                  type: string
                  enum:
                  - record
                  - rollback
                projectId:
                  type: string
                layerId:
                  type: string
                layerType:
                  type: string
                  enum:
                  - face_swap
                  - background_remove
                  - caption
                beforeState:
                  type: object
                  additionalProperties: true
                afterState:
                  type: object
                  additionalProperties: true
                versionId:
                  type: string
                actorId:
                  type: string
                metadata:
                  type: object
                  additionalProperties: true
      responses:
        '200':
          description: Rollback payload
        '201':
          description: Version recorded
        '400':
          description: Validation error
        '404':
          description: Version not found
components:
  securitySchemes:
    DeveloperApiKeyAuth:
      type: apiKey
      in: header
      name: x-developer-api-key
      description: 'Optional higher-rate free-tier auth. You can also send the key as Authorization: Bearer <key>.'
    AgentApiKeyAuth:
      type: apiKey
      in: header
      name: x-agent-api-key
      description: 'Agent auth for free endpoints and agent-admin routes. You can also send the key as Authorization: Bearer <key>.'