Authentication is not mandatory for every requests to the Hub. For instance, requesting
details about `"gpt2"` model does not require to be authenticated. However, if a user is
[logged in](../package_reference/login), the default behavior will be to always send the token
in order to ease user experience (never get a HTTP 401 Unauthorized) when accessing private or gated repositories. For privacy, you can
disable this behavior by setting `HF_HUB_DISABLE_IMPLICIT_TOKEN=1`. In this case,