Issue a secret to each script or agent. The add-on keeps only a hash. Put the secret in an env var, vault, or .env — whatever you already use.
.env
It will not be shown again. Store it the same way you store any other API token.
Example: set FAB_TOKEN=<secret> then python tools/client.py meta.methods
set FAB_TOKEN=<secret>
python tools/client.py meta.methods