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How to call ComfyUI workflow via API? What preparation steps are required?

2025-09-10 1.9 K

API call standardization process

preliminary

  1. Enable in ComfyUI settingsdeveloper modeExpose API JSON export function
  2. After designing the workflow using the graphical interface, it is possible to design the workflow through the导出API JSONGetting the Process Definition File
  3. Prepare the input file (three ways are supported):
    • Web URL direct linking
    • Single file upload
    • ZIP archive batch upload

core calling session

Required to be included when sending requests through the Replicate platform interface:

  • workflow_api.json: Configuration file defining node connectivity relationships
  • input parameter: Dynamically replace file paths or parameter values in workflows
  • LoRA Configuration(Optional): UseLoraLoaderFromURLNode Loading Online Model

Advanced Feature Configuration

start using返回临时文件Option to get the control network intermediate products, easy to debug the effect of preprocessing. It is recommended to enable this function in the test phase, and the production environment is adjusted according to the performance requirements.

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