Midjourney ComfyUI Nodes

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

Related Projects

Midjourney on MuAPI — Model landing page for the V7, V8, and Niji nodes.
Midjourney V8 playground — Try the latest image model in the browser.
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
awesome-ai-image-models — compare AI image models by API, price & quality

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 apikey fields empty and run muapi auth configure --api-key YOURKEY 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 apikey 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) · firsturl (STRING) · allurls (STRING, newline-separated) · request_id (STRING)

Reference images

If both imageurl and refimage are provided, image_url wins.
refimage is uploaded to muapi's /uploadfile 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.

License

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