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ComfyUI API Request Failed — cause and fix

An API request failed with an error response.

Direct answer

How do I fix "API Request Failed"?

An API request failed with an error response.

Key facts

  • iAn API request failed with an error response.

Next step

  1. 1Check the request parameters
  2. 2Verify API credentials if required
  3. 3Retry the request

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Other ComfyUI errors

Fix

GPU Memory Exhausted

Fix

Model Not Found

Fix

Missing Python Package

Fix

Network Connection Failed

Fix

GPU Driver Error

Fix

Process Terminated

Frequently Asked Questions

What causes "API Request Failed" in ComfyUI?

An API request failed with an error response.

How do I fix "API Request Failed"?

Check the request parameters Verify API credentials if required