> ## Documentation Index
> Fetch the complete documentation index at: https://docs.evolink.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Midjourney V7 Image Generation

> - Midjourney V7 model supports generating high-quality images via natural language prompts, 4 images per generation
- Supports text-to-image and image-to-image (reference image URLs in prompt)
- Supports all V7 native parameter syntax (e.g. --ar, --s, --c), see [Prompt Parameter Guide](/en/api-manual/image-series/midjourney/midjourney-v7-prompt-guide)
- Async processing mode, use the returned task ID to [query status](/en/api-manual/task-management/get-task-detail)
- Generated image links are valid for 24 hours, please save them promptly
- Timeout: approximately 20 minutes
- System protection: `--v`/`--version` locked to V7, `--niji` not supported, `--fast`/`--turbo`/`--draft` must be controlled via `model_params.speed` (these parameters in prompt will be automatically removed)

<Note>
  Midjourney has a built-in content moderation system. If some generated images are filtered by moderation, credits consumed for that request will not be refunded. Please ensure your prompts comply with content guidelines.
</Note>


## OpenAPI

````yaml /en/api-manual/image-series/midjourney/mj-v7-image-generate.json POST /v1/images/generations
openapi: 3.1.0
info:
  title: Midjourney V7 Image Generation Interface
  description: Create image generation tasks using the Midjourney V7 model
  license:
    name: MIT
  version: 1.0.0
servers:
  - url: https://api.evolink.ai
    description: Production
security:
  - bearerAuth: []
paths:
  /v1/images/generations:
    post:
      tags:
        - Image Generation
      summary: Midjourney V7 Image Generation Interface
      description: >-
        - Midjourney V7 model supports generating high-quality images via
        natural language prompts, 4 images per generation

        - Supports text-to-image and image-to-image (reference image URLs in
        prompt)

        - Supports all V7 native parameter syntax (e.g. --ar, --s, --c), see
        [Prompt Parameter
        Guide](/en/api-manual/image-series/midjourney/midjourney-v7-prompt-guide)

        - Async processing mode, use the returned task ID to [query
        status](/en/api-manual/task-management/get-task-detail)

        - Generated image links are valid for 24 hours, please save them
        promptly

        - Timeout: approximately 20 minutes

        - System protection: `--v`/`--version` locked to V7, `--niji` not
        supported, `--fast`/`--turbo`/`--draft` must be controlled via
        `model_params.speed` (these parameters in prompt will be automatically
        removed)
      operationId: createMjV7ImageGeneration
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ImageGenerationRequest'
            examples:
              text_to_image:
                summary: Text to Image
                value:
                  model: mj-v7
                  prompt: >-
                    A cinematic shot of a Maine Coon cat on a neon-lit balcony
                    --ar 16:9 --s 500
                  model_params:
                    speed: fast
              image_to_image:
                summary: Image to Image
                value:
                  model: mj-v7
                  prompt: >-
                    https://example.com/ref.jpg A sunset landscape in watercolor
                    style --iw 1.5 --ar 16:9
                  model_params:
                    speed: fast
      responses:
        '200':
          description: Task created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ImageGenerationResponse'
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: invalid_request
                  message: Invalid request parameters
                  type: invalid_request_error
        '401':
          description: Unauthorized, invalid or expired token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: unauthorized
                  message: Invalid or expired token
                  type: authentication_error
        '402':
          description: Insufficient quota, please top up
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: insufficient_quota
                  message: Insufficient quota. Please top up your account.
                  type: insufficient_quota
        '403':
          description: Access denied
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: model_access_denied
                  message: 'Token does not have access to model: mj-v7'
                  type: invalid_request_error
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: rate_limit_exceeded
                  message: Too many requests, please try again later
                  type: rate_limit_error
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  code: internal_error
                  message: Internal server error
                  type: api_error
components:
  schemas:
    ImageGenerationRequest:
      type: object
      required:
        - model
        - prompt
      properties:
        model:
          type: string
          enum:
            - mj-v7
          default: mj-v7
          description: Model name
        prompt:
          type: string
          description: >-
            Prompt, supports all Midjourney V7 native parameter syntax (e.g.
            --ar 16:9 --s 500).


            **Image-to-Image:** Place image URLs at the beginning of the prompt.
            Supported formats: .png, .gif, .webp, .jpg, .jpeg


            **Image-to-Image Rules:**

            - 1 image + no text = **invalid** (will return error)

            - 1 image + text description = valid

            - 2+ images + no text = valid

            - 2+ images + text description = valid
          maxLength: 8192
          example: >-
            A cinematic shot of a Maine Coon cat on a neon-lit balcony --ar 16:9
            --s 500
        model_params:
          type: object
          description: Model parameters
          properties:
            speed:
              type: string
              enum:
                - draft
                - fast
                - turbo
              default: fast
              description: >-
                Speed mode


                - `draft`: Sketch mode, 10x faster, lower cost, can be enhanced
                later with mj-v7-enhance

                - `fast`: Standard mode (default)

                - `turbo`: Ultra-fast mode, higher cost


                **Pricing note:** draft costs the least, turbo costs the most
                (approximately 2x fast)
        callback_url:
          type: string
          description: >-
            HTTPS callback URL for task completion


            **Callback timing:**

            - Triggered when task is completed, failed, or cancelled

            - Sent after billing confirmation


            **Security restrictions:**

            - HTTPS protocol only

            - Callbacks to private IP addresses are prohibited (127.0.0.1,
            10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.)

            - URL length must not exceed `2048` characters


            **Callback mechanism:**

            - Timeout: `10` seconds

            - Up to `3` retries after failure (retries at `1`s/`2`s/`4`s after
            failure)

            - Callback response body format matches the task query endpoint

            - A 2xx status code is considered successful; other status codes
            trigger retries
          format: uri
          example: https://your-domain.com/webhooks/image-task-completed
    ImageGenerationResponse:
      type: object
      properties:
        created:
          type: integer
          description: Task creation timestamp
          example: 1757165031
        id:
          type: string
          description: Task ID
          example: task-unified-1757165031-mjv7
        model:
          type: string
          description: Actual model name used
          example: mj-v7
        object:
          type: string
          enum:
            - image.generation.task
          description: Task object type
        progress:
          type: integer
          description: Task progress percentage (0-100)
          minimum: 0
          maximum: 100
          example: 0
        status:
          type: string
          description: Task status
          enum:
            - pending
            - processing
            - completed
            - failed
          example: pending
        task_info:
          $ref: '#/components/schemas/TaskInfo'
          description: Async task info
        type:
          type: string
          enum:
            - text
            - image
            - audio
            - video
          description: Task output type
          example: image
        usage:
          $ref: '#/components/schemas/Usage'
          description: Usage and billing info
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              description: Error code identifier
            message:
              type: string
              description: Error message
            type:
              type: string
              description: Error type
    TaskInfo:
      type: object
      properties:
        can_cancel:
          type: boolean
          description: Whether task can be cancelled
          example: true
        estimated_time:
          type: integer
          description: Estimated completion time (seconds)
          minimum: 0
          example: 45
    Usage:
      type: object
      description: Usage and billing info
      properties:
        billing_rule:
          type: string
          description: Billing rule
          enum:
            - per_call
            - per_token
            - per_second
          example: per_call
        credits_reserved:
          type: number
          description: Estimated credits consumed
          minimum: 0
          example: 1.8
        user_group:
          type: string
          description: User group
          example: default
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        ## All endpoints require Bearer Token authentication ##


        **Get API Key:**


        Visit [API Key Management Page](https://evolink.ai/dashboard/keys) to
        get your API Key


        **Add to request header:**

        ```

        Authorization: Bearer YOUR_API_KEY

        ```

````