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API
Turn any workflow into a production endpoint.
Design your workflows. Deploy them as API calls. Automate generation, integrate with your systems, and scale to thousands of outputs on Comfy Cloud.
The automation layer for professional-grade visual AI
To transform ComfyUI from a powerful tool to reliable infrastructure.
Automate what can't be manual
Trigger generation when a user uploads a photo. Process an entire product catalog overnight. Swap a character’s expression across 500 frames.
The API is for running workflows inside other systems — triggered by code, not by a person at a keyboard.
Inject dynamic values at runtime
Pass a different face, a different product, a different brand palette into the same pipeline — consistent, controlled output every time.
The workflow stays fixed. The inputs change.
Integrate ComfyUI into the rest of your stack
Generation is usually one step in a larger system. Fetch input from S3, call the ComfyUI API, post-process the result, write it to a database, and notify a team.
Three steps to production
01
Design the workflow
Build and test in the ComfyUI interface — locally or on Comfy Cloud. When it works, export the API format.
02
Submit via API
Send the workflow JSON or a single request to the API endpoint. Modify inputs programmatically — prompts, seeds, images, any parameter on any node.
03
Monitor and Retrieve
Track progress in real time over WebSocket. Download the finished output when the job completes.
Deploy on Comfy Cloud — no servers to manage.
Comfy Cloud API gives you a managed infrastructure so you can focus on the workflow, not the hardware.
Powerful GPUs on demand
Heavy video generation, complex multi-step pipelines, large batch jobs.
One API key. Immediate access.
No environment setup, no model downloads, no GPU procurement.
Open models & partner models through one endpoint
Open-source models alongside partner models like Kling, Luma, Nano Banana, Grok, and Runway — all with one credit balance.
Real-time progress
Step-by-step execution updates and live previews during generation via WebSocket.
The AI creation engine for complete control
Over every model, every node, every step, every output.