# ComfyUI Workflows

Runs ComfyUI workflows for images, video and music, including low-VRAM setups.

- Repository: https://github.com/calesthio/OpenMontage (74341 stars)
- Category: Media
- License: AGPL-3.0
- Last updated: 2026-10-28
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add calesthio/OpenMontage --skill comfyui -g -a claude-code -y`
Codex: `npx skills add calesthio/OpenMontage --skill comfyui -g -a codex -y`
Cursor: `npx skills add calesthio/OpenMontage --skill comfyui -g -a cursor -y`
Gemini CLI: `npx skills add calesthio/OpenMontage --skill comfyui -g -a gemini-cli -y`

## Description

Use when working with ComfyUI workflows in OpenMontage, including comfyui_image/comfyui_video/comfyui_music, custom workflow_json/workflow_path inputs, output_node selection, missing model setup, LoRAs, low-VRAM workflow choices, and community workflow imports.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# ComfyUI Workflows in OpenMontage

Use this skill before calling `comfyui_image`, `comfyui_video`, or `comfyui_music`, and when converting a community ComfyUI workflow into an OpenMontage tool call.

## Server Contract

- ComfyUI must be running before the tool can generate. The default server is `http://localhost:8188`; override it with `COMFYUI_SERVER_URL`.
- Running separate ComfyUI instances per capability (different GPU, different model set)? `COMFYUI_IMAGE_SERVER_URL` / `COMFYUI_VIDEO_SERVER_URL` / `COMFYUI_MUSIC_SERVER_URL` each override `COMFYUI_SERVER_URL` for that one tool only. Optional -- a single-server setup needs none of these.
- Health and hardware status come from `GET /system_stats`.
- Jobs are submitted to `POST /prompt`, completed outputs are read from `GET /history/{prompt_id}`, and artifact bytes are downloaded with `GET /view`.
- Long waits (video, music) prefer ComfyUI's websocket feed for immediate completion/error detection and transparently fall back to REST polling if `websocket-client` isn't installed. Either way, a timeout is recoverable: pass the error's `prompt_id` back in as `resume_prompt_id` to resume waiting on the same job instead of resubmitting it.
- Export workflows with ComfyUI's API-format JSON, not the UI layout format. If a downloaded workflow will not submit, re-export it from ComfyUI with API format enabled.

### Partner Nodes are hosted

- `gemini_omni_flash`, `seedance_2.5`, and `minimax_h3_api` in
  `comfyui_video` are official ComfyUI Partner Nodes. They call hosted APIs and
  require network access, a logged-in Comfy account, and prepaid credits.
- Do not describe Partner Nodes as local, offline, or free merely because the
  graph runs in a local ComfyUI process.
- `minimax_h3_local` is a separate open-weight path. It requires the official
  MiniMax H3 workflow exported in API format, its `output_node`, and the model
  stack reported by the tool.

## Choosing a Workflow

The rest: https://github.com/calesthio/OpenMontage/blob/HEAD/.agents/skills/comfyui/SKILL.md