WanAPIs Images API

openapi: 3.2.0
info:
  title: WanAPIs Unified AI Images API
  version: '2026-05-27'
  summary: OpenAI-compatible AI gateway aggregating GPT, Claude, Gemini, DeepSeek and other LLM, image, video, and audio model providers behind a single key.
  description: WanAPIs (https://wanapis.com) is a developer-focused AI API gateway.
  termsOfService: https://wanapis.com/
  contact:
    name: WanAPIs Support
    email: support@wanapis.com
    url: https://wanapis.com/
  license:
    name: Proprietary
    url: https://wanapis.com/
servers:
- url: https://api.wanapis.com/v1
  description: WanAPIs production OpenAI-compatible base URL.
security:
- bearerAuth: []
tags:
- name: Images
  description: Image generation and editing.
paths:
  /images/generations:
    post:
      tags:
      - Images
      operationId: createImage
      summary: Generate an image
      description: 'Generate images from a text prompt. OpenAI-compatible shape. WanAPIs

        routes the request to the selected image model (DALL·E, Stable

        Diffusion, Midjourney-compatible endpoints, etc.). Long-running jobs

        return a task ID — see `/tasks/{task_id}`.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ImageGenerationRequest'
      responses:
        '200':
          description: Image generation result (sync or async task handle).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ImageResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/UpstreamFailure'
  /images/edits:
    post:
      tags:
      - Images
      operationId: editImage
      summary: Edit an image
      description: Apply an edit to a supplied image using a text prompt and optional mask. Multipart form upload, OpenAI-compatible.
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/ImageEditRequest'
      responses:
        '200':
          description: Edited image (sync or async task handle).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ImageResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/UpstreamFailure'
components:
  responses:
    UpstreamFailure:
      description: Upstream provider failure (500–504). Retry with exponential backoff; WanAPIs may auto-failover to a configured channel.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    RateLimited:
      description: Rate limit or quota exceeded.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    ImageGenerationRequest:
      type: object
      required:
      - model
      - prompt
      properties:
        model:
          type: string
        prompt:
          type: string
        n:
          type: integer
          default: 1
        size:
          type: string
          description: e.g. 1024x1024
        quality:
          type: string
          enum:
          - standard
          - hd
        style:
          type: string
          enum:
          - vivid
          - natural
        response_format:
          type: string
          enum:
          - url
          - b64_json
        user:
          type: string
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
            type:
              type: string
            code:
              type: string
            param:
              type: string
              nullable: true
    ImageResponse:
      type: object
      properties:
        created:
          type: integer
        data:
          type: array
          items:
            type: object
            properties:
              url:
                type: string
              b64_json:
                type: string
              revised_prompt:
                type: string
        task_id:
          type: string
          description: Present when the upstream model runs the job asynchronously; poll via `/tasks/{task_id}`.
    ImageEditRequest:
      type: object
      required:
      - model
      - image
      - prompt
      properties:
        model:
          type: string
        image:
          type: string
          format: binary
        mask:
          type: string
          format: binary
        prompt:
          type: string
        n:
          type: integer
        size:
          type: string
        response_format:
          type: string
          enum:
          - url
          - b64_json
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: 'Authenticate every request with `Authorization: Bearer <wanapis_api_key>`.

        Keys are issued per project in the WanAPIs dashboard and may be scoped

        with quota and model availability.

        '