The docs should contain a hint there is a limit of 2500 requests per months. If one starts to use multiple sensors and overwrites the update interval then she/he will hit the limit.

The docs should contain a hint there is a limit of 2500 requests per months. If one starts to use multiple sensors and overwrites the update interval then she/he will hit the limit.

Where did you find this information about 2500 requests? The client does not actually use the official API, since this requires each home-assistant user creating API credentials, waiting to be approved, and subsequently configuring them in home-assistant.

Instead, the client library nsw-fuel-api-client piggybacks on the API exposed for the FuelCheck App, which does not require any authentication and doesn't appear to have any limits (however usage of this API is possibly questionable, but I don't think it differs from many of the other unofficial 3rd party platforms available on home-assistant.)

Where did you find this information about 2500 requests?

At https://api.nsw.gov.au/price

I'm aware of the limit imposed by the official API, but as I mentioned in the previous comment, the underlying library uses an unofficial API exposed by the FuelCheck App, which I expect has higher limits since it is the underlying API for a web and mobile application used to show fuel information.

The main reason for using the unofficial API is that it does not require any authentication - using the official API requires consumers to apply for an API key, a process that took a week for me (which is why I resorted to the unofficial API).