Possible problems with Web Speech Api in the background in Google Chrome?

Question

Google Chrome

Hello. I'm writing a chrome extension that constantly listens to the user's microphone in the background and extracts text using Google's Web Speech API implementation ( webkitSpeechRecognition ). A little disturbing is the fact that, in fact, requests are sent relentlessly somewhere to a remote server and responses are obtained from there.
If this extension is installed by a sufficiently large number of people, can there be claims from Google against it? Maybe somewhere you can read something like a user agreement for using this API? Or am I messing around for nothing? :)