Midjourney ComfyUI Nodes

June 2, 2026 · View on GitHub

ComfyUI custom nodes for Midjourney V7, V8, and Niji — generate high-quality Midjourney images directly inside ComfyUI via the muapi.ai API.

muapi-comfyui — ComfyUI nodes for 100+ MuAPI models including Midjourney, Seedance, Veo, and more
Open-Generative-AI — Free self-hosted studio with 200+ models — no ComfyUI needed

What's Inside

This node pack exposes the three latest Midjourney endpoints on muapi.ai as ComfyUI nodes. Each run returns 4 images as an IMAGE batch that plugs directly into previews, savers, upscalers, or any downstream node.

Midjourney V7 — photorealistic, artistic, cinematic compositions
Midjourney V8 — latest generation, improved coherence and detail
Midjourney Niji — anime, manga, and stylized illustration

All three share the same control surface: prompt, aspect ratio, stylize, chaos, weird, negative prompt, seed, and optional reference image.

Nodes

Node	Description
🔑 Midjourney API Key	Set your muapi key once — wire to all nodes
🎨 Midjourney V7	4-image run with V7
🎨 Midjourney V8	4-image run with V8
🎨 Midjourney Niji	4-image run with Niji (anime / illustration)

Installation

Via ComfyUI Manager (recommended)

Open ComfyUI Manager → Install via Git URL
Paste: https://github.com/Anil-matcha/Open-Higgsfield-Popcorn
Restart ComfyUI

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/Anil-matcha/Open-Higgsfield-Popcorn midjourney-comfyui
pip install -r midjourney-comfyui/requirements.txt

Quick Start

Sign up at muapi.ai and go to Dashboard → API Keys → Create Key.
Right-click the ComfyUI canvas → Add Node → 🎨 Midjourney.
Add a 🔑 Midjourney API Key node, paste your key, and wire its output to any generation node (or leave all api_key fields empty and run muapi auth configure --api-key YOUR_KEY once in a terminal).
Type a prompt and hit Queue Prompt — 4 images come back as a batch.

Tip: The MuAPI CLI lets you configure your key once globally. All nodes in this pack auto-read ~/.muapi/config.json when the api_key field is empty.

Node Reference

All three generation nodes share the same inputs:

Field	Values	Default
`prompt`	Text description	—
`aspect_ratio`	1:1 / 16:9 / 9:16 / 3:4 / 4:3 / 21:9	1:1
`stylize`	0–1000 (lower = literal, higher = stylized)	100
`chaos`	0–100 (variation across the 4 images)	0
`weird`	0–3000 (unconventional aesthetics)	0
`negative_prompt`	Optional — things to exclude	—
`seed`	0–4294967295 (0 = random)	0
`image_url`	Optional reference image URL	—
`ref_image`	Optional `IMAGE` input — uploaded to muapi	—
`api_key`	Optional — leave blank if using the API Key node or CLI config	—

Outputs: images (IMAGE batch of 4) · first_url (STRING) · all_urls (STRING, newline-separated) · request_id (STRING)

Reference images

If both image_url and ref_image are provided, image_url wins.
ref_image is uploaded to muapi's /upload_file endpoint before the generation call.

Example Workflow

[🔑 API Key] ──────────────────┐
                                ↓
[🎨 Midjourney V8] → images → [Preview Image]
                   → first_url → [Show Text]

The images output is a batch of 4, so dropping a standard Preview Image or Save Image node shows/saves all four frames.

API

This node pack uses the muapi.ai API under the hood:

Submit: POST https://api.muapi.ai/api/v1/midjourney-v7 (or -v8, or -niji)
Poll: GET https://api.muapi.ai/api/v1/predictions/{id}/result
Upload: POST https://api.muapi.ai/api/v1/upload_file

Authentication is a single x-api-key header — no session tokens required.

Requirements

Python ≥ 3.8
requests ≥ 2.28 · Pillow ≥ 9.0 · numpy ≥ 1.23 · torch ≥ 2.0

Want More Models?

This repo is focused on Midjourney only. If you need access to 100+ models — Seedance, Kling, Veo3, Flux, HiDream, GPT-image, Imagen4, Wan, lipsync, audio, image enhancement and more — check out the full MuAPI ComfyUI node pack:

SamurAIGPT/muapi-comfyui — ComfyUI nodes for every muapi.ai model in one place.