Midjourney Image Generation

Generate and manipulate AI images through AceDataCloud's Midjourney API.

Setup: See authentication for token setup.

Quick Start — Generate an Image

curl -X POST https://api.acedata.cloud/midjourney/imagine \
  -H "Authorization: Bearer $ACEDATACLOUD_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "a futuristic city at sunset, cyberpunk style --ar 16:9", "callback_url": "https://api.acedata.cloud/health"}'

Async: See async task polling. Poll via POST /midjourney/tasks with {"task_id": "..."}.

Generation Modes

Mode	Speed	Cost	Best For
fast	Fast	Standard	Most tasks (default)
relax	Slow	Cheaper	Batch generation
turbo	Fastest	Premium	Time-sensitive work

Midjourney Versions

Version	Notes
8	Latest, best quality
7	Great quality, fast
6.1	Stable, well-tested
6	Previous generation
5.2	Legacy

Core Workflows

1. Generate Images (Imagine)

Creates a 2x2 grid of 4 image variations.

POST /midjourney/imagine
{
  "prompt": "a serene mountain lake at dawn, photorealistic --ar 16:9 --v 7",
  "mode": "fast",
  "translation": true,
  "split_images": true
}

Set translation: true to auto-translate non-English prompts. Set split_images: true to get individual images besides the grid.

2. Upscale / Vary / Pan / Zoom

After generating a grid, use transform actions on individual images:

POST /midjourney/imagine
{
  "action": "upscale1",
  "image_id": "grid-image-id"
}

Available actions:

• upscale1–upscale4: Upscale individual quadrant
• variation1–variation4: Create variation of a quadrant
• variation_subtle / variation_strong: Subtle/strong variation of full image
• reroll: Re-generate with same prompt
• zoom_out_2x / zoom_out_1_5x: Zoom out
• pan_left / pan_right / pan_up / pan_down: Extend canvas

3. Edit an Image

Modify an existing image using a text prompt, optionally with a mask.

POST /midjourney/edits
{
  "image_url": "https://example.com/photo.jpg",
  "prompt": "add a rainbow in the sky",
  "mode": "fast"
}

4. Blend Images

Combine 2–5 images into a new composition.

POST /midjourney/imagine
{
  "action": "blend",
  "image_urls": [
    "https://example.com/image1.jpg",
    "https://example.com/image2.jpg"
  ]
}

5. Describe an Image (Reverse Prompt)

Get AI-generated text descriptions of an image (returns 4 options).

POST /midjourney/describe
{"image_url": "https://example.com/photo.jpg"}

6. Generate Video from Image

Create a video with a reference image and text prompt.

POST /midjourney/videos
{
  "image_url": "https://example.com/photo.jpg",
  "prompt": "the city comes alive with moving traffic",
  "resolution": "720p"
}

Prompt Parameters

Append these to your prompt text:

Parameter	Example	Description
--ar	--ar 16:9	Aspect ratio
--v	--v 7	Midjourney version
--q	--q 2	Quality (0.25, 0.5, 1, 2)
--s	--s 750	Stylization (0–1000)
--c	--c 50	Chaos/variety (0–100)
--no	--no text, watermark	Negative prompt
--seed	--seed 12345	Reproducible generation

API-Level Parameters (Billing Impact)

These top-level fields on POST /midjourney/imagine affect billing and are separate from inline prompt parameters:

Parameter	Type	Description
version	string	Midjourney version ("8", "7", "6.1", etc.) — used for billing calculation
hd	boolean	Enable HD 2K resolution (V8 only) — costs 4× GPU time
quality	string	Quality level: ".25", ".5", "1", "2", "4" — quality "4" is V8 only and costs 4× GPU time
style_reference	boolean	Whether prompt uses --sref style references (V8: costs 4× GPU time)
moodboard	boolean	Whether prompt uses moodboard image references (V8: costs 4× GPU time)

Gotchas

• Imagine returns a 2x2 grid — use upscale/variation actions to work with individual images
• Use split_images: true to also receive individual cropped images alongside the grid
• Prompt parameters (--ar, --v, etc.) go inside the prompt string, not as separate fields
• translation: true auto-translates Chinese/other languages to English before sending to Midjourney
• Video generation requires a reference image_url — it cannot generate from text alone
• Available transform actions depend on the image — check available_actions in the response
• Get the seed with POST /midjourney/seed using the image_id for reproducible results

MCP: pip install mcp-midjourney | Hosted: https://midjourney.mcp.acedata.cloud/mcp | See all MCP servers