Here is what I have in my .env file. My question is whether I need to comment out this export LT_REQ_LIMIT=30 or anything else to eliminate any usage without the API key.
#!/bin/bash
#export LT_LANGUAGE_MODELS=en,de,ar,az,ca,zh,cs,da,nl,eo,fi,fr,el,he,hi,hu,id,ga,it,ja,ko,fa,pl,pt,ru,sk,es,sv,tr,uk
export LT_LANGUAGE_MODELS=en,de,fr,es,it
# Add custom configuration here. See https://github.com/LibreTranslate/LibreTranslate/blob/main/README.md#arguments
export LT_FRONTEND_LANGUAGE_SOURCE=es
export LT_FRONTEND_LANGUAGE_TARGET=en
export LT_API_KEYS=true
export LT_API_KEYS_DB_PATH=/app/data/db/api_keys.db
export LT_REQ_LIMIT=30
export LT_THREADS=8
# Require API key for translations. If you enable this, you have to set an API key in the web ui as well
export LT_REQUIRE_API_KEY_ORIGIN=true