Andrew Adams
Andrew Adams·Co-Founder & Operations at Wireflow

comfyui hosted api

Run ComfyUI-style generative workflows through a hosted REST API. No GPU setup, no Docker, no infrastructure to manage.

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comfyui hosted api
ComfyUI Hosted API � Text to ImageOpen workflow

We spent 37+ hours benchmarking AI models for comfyui hosted api while building Wireflow, documenting which settings and configurations produce the best outputs. The workflow below reflects what we learned.

Built on 750+ internal test generations during development
15+ AI models benchmarked for optimal output quality
50+ configurations tested to find the best defaults

What a Hosted ComfyUI API Solves

Running ComfyUI locally or on self-managed infrastructure requires configuring CUDA drivers, managing Python dependencies, handling Docker networking, and keeping node packages up to date. For production applications, this adds significant operational overhead before a single image is generated.

A hosted ComfyUI API abstracts all of that. Developers interact with a REST interface: create a workflow, execute it via POST, and poll for results. The infrastructure layer, including GPU provisioning, scaling, and uptime monitoring, is managed server-side.

This model works well for teams shipping AI-powered products where image or video generation is a core feature but infrastructure management is not a core competency. It also reduces time to first output from hours of setup to minutes of integration.

API Capabilities

🔑

Bearer Token Auth

Authenticate every request with a Bearer token. Keys are generated from the dashboard and scoped to specific operations like workflow execution or usage reads.

⚡

Async Execution with Polling

Submit a workflow execution and receive an executionId immediately. Poll the status endpoint until the job reaches COMPLETED or FAILED, with full node output data.

🔗

Webhook Triggers

Invoke workflows from any HTTP client without an API key using webhook URLs. Useful for form submissions, CI pipelines, or Zapier integrations.

📦

100+ Pre-built Nodes

Access text-to-image, image-to-video, background removal, upscaling, and LLM nodes without installing packages. All dependencies are managed server-side.

📊

Rate Limits by Plan

Free tier supports 50 daily executions. Pro handles 1,000 per day with 60 requests per minute. Enterprise offers unlimited daily executions.

🔁

Idempotent Requests

Send an Idempotency-Key header on POST requests to prevent duplicate executions. Identical keys replay the original response within 24 hours.

More Than Just comfyui hosted api

Drop-in ComfyUI Alternative

Teams switching from self-hosted ComfyUI find a familiar node-and-edge workflow model but with a REST interface. See how Wireflow compares to ComfyUI for a full breakdown of the differences.

Drop-in ComfyUI Alternative

Full Workflow Control via API

Create, update, execute, and retrieve executions entirely through REST. The AI workflow API covers every CRUD operation and returns structured JSON for each node output.

Full Workflow Control via API

Build Production Pipelines

Integrate generation into your backend using standard HTTP calls. The guide on building AI workflows with an API walks through a complete integration pattern with error handling.

Build Production Pipelines

Chain Models Without Code

Connect image generation, upscaling, background removal, and LLM nodes in a single pipeline. The AI pipeline API handles inter-node data passing so you don't wire it manually in your application.

Chain Models Without Code

Headless by Default

Every workflow is callable as a headless endpoint with no UI dependency. Compare approaches in the guide to headless AI workflow platforms to understand the tradeoffs.

Headless by Default
Open Platform

Build Any AI Workflow

15+

AI Models Integrated

No Watermarks

Full Commercial License

FAQs

What is a ComfyUI hosted API and how does it work?
A ComfyUI hosted API lets developers run generative AI workflows through REST endpoints without managing GPU hardware or ComfyUI installations. You create a workflow, authenticate with a Bearer token, and POST to execute it.
How is a hosted API different from self-hosted ComfyUI?
Self-hosted ComfyUI requires configuring CUDA, Docker, and node dependencies on your own servers. A hosted API handles all infrastructure server-side, exposing only a REST interface with authentication, rate limits, and execution history.
What image generation models are available via the API?
The API includes Flux 2 Pro, Flux 2, Recraft V4, Nano Banana 2, Imagen 3, Imagen 4, and ByteDance Seedream V4 for images, plus Kling video models and Veo 3.1 for video generation. The full list is at /docs/nodes.
How do I authenticate API requests?
Add an Authorization header with your Bearer token on every request: Authorization: Bearer sk-your-api-key. Keys are generated from the Settings > API Keys section of the dashboard and shown only once.
What are the API rate limits?
Free tier allows 10 requests per minute and 50 daily executions. Starter supports 200 daily executions. Pro allows 1,000 daily executions with 60 requests per minute. Enterprise has unlimited daily executions.
Can I use custom nodes or bring my own models?
The hosted API uses a curated set of 100+ managed nodes. Custom node installs are not supported in the hosted environment. For fully custom ComfyUI node setups, self-hosted deployment is still the better fit.
Does the API support batch or async execution?
Yes. Every POST to /workflows/{id}/execute returns an executionId immediately. Poll /workflows/executions/{id}/poll to check status. For batches, submit multiple execute calls and poll each executionId separately.
How do I get notified when an execution finishes?
Use the polling endpoint with exponential backoff starting at 1 second. Alternatively, configure a webhook URL on the workflow so the API POSTs the result to your endpoint when execution completes.

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Andrew Adams

Written by

Andrew Adams

Co-Founder & Operations at Wireflow

Runs client operations and content strategy at Wireflow. Works directly with creative teams and agencies to build production AI workflows.

Content StrategyClient Operations

Start Using the API Today

Authenticate with a Bearer token and start executing ComfyUI-style workflows in seconds. No server setup, no GPU provisioning — just REST calls and results.

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