ComfyUI Has a Free API — Build Complex AI Image Workflows Visually

ComfyUI: Node-Based Stable Diffusion Interface ComfyUI is the most powerful GUI and backend for Stable Diffusion. Unlike simple text-to-image tools, ComfyUI lets you build complex workflows using a visual node editor — chain models, control nets, upscalers, and custom logic. How ComfyUI Works Every workflow is a graph of nodes. Each node does one thing: load a model, encode text, sample, decode, save. Connect them visually and you have a complete image generation pipeline. The Free API ComfyUI exposes a WebSocket + REST API: import json import urllib.request import websocket SERVER = " 127.0.0.1:8188 " # Queue a workflow def queue_prompt ( workflow ): data = json . dumps ({ " prompt " : workflow }). encode ( " utf-8 " ) req = urllib . request . Request ( f " http:// { SERVER } /prompt " , data = data , headers = { " Content-Type " : " application/json " } ) return json . loads ( urllib . request . urlopen ( req ). read ()) # Get generation history def get_history ( prompt_id ): resp =