Minimal ComfyUI custom node that reads an environment variable by key and outputs it as a string.
- Name:
Environment Variable - Input:
key(STRING) - Output:
value(STRING)
Behavior:
- Returns
os.environ[key]when present. - Raises
KeyErrorwhen the key is missing.
Option 1. Clone into ComfyUI/custom_nodes/:
git clone https://github.com/wtesler/ComfyUI-EnvVariable.gitThere are no additional requirements to install.
Option 2. Search and download "ComfyUI-EnvVariable" from Custom Nodes Manager.
Set the variable either in System Environment Variables or in your ComfyUI launch script (set MY_KEY=...).
Then fully close and relaunch ComfyUI so the process receives updated environment values.