gen

name	gen
description	Generate an image with ComfyUI from a text prompt

Generate Image

Generate an image using ComfyUI based on the user's prompt "$ARGUMENTS".

Steps

1. Parse the prompt. Extract any explicit parameters (dimensions, steps, cfg, model name) from the user's request. Reject and ask for clarification only in these specific cases:

   • The prompt is empty or whitespace-only
   • The prompt is a question or meta-request rather than a scene description (e.g., "what can you do?", "how does this work?")
   • The user passed a parameter outside its valid range (steps < 1, cfg < 0, width/height not divisible by 8)

   Otherwise, apply these defaults for the listed parameters (and only these) when not specified:

   • width: 512, height: 512
   • steps: 20
   • cfg: 7.0
   • negative_prompt: "bad quality, blurry"

2. Select a model. If the user specified a model name, use it. Otherwise, call comfyui_list_models with folder "checkpoints", pick one from the returned items, and ask the user to confirm before proceeding (offer to swap if they want a different one).

3. Generate the image. Call comfyui_generate_image with the parsed parameters and wait=True so we block until completion.

4. Fetch the result. The response is a dict envelope with keys status (expect "completed"), prompt_id, outputs, elapsed_seconds, and optionally warnings. outputs is a list of {node_id, filename, subfolder} entries — read the first entry's filename and subfolder and call comfyui_get_image with those. (Tip: pass preview_format="webp" and preview_quality=80 to comfyui_get_image for a thumbnail instead of the full PNG — much cheaper context.)

5. Present the result. Show the image and a summary of the generation parameters used (prompt, model, dimensions, steps, cfg).

Notes

• If generation fails, check comfyui_get_queue to see if ComfyUI is busy or stuck.
• For img2img, ControlNet, or other advanced workflows, use /comfy:workflow instead.