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well, it interacts with ALL websites the same, it attempts to identify a list of items, and makes an http request once for each item that comes up, and it does it client side where the chrome extension is installed.

So I suppose its at least sort of autonomous.

TOU: USE. You agree not to use or provide software (except for general purpose web browsers and email clients, or software expressly licensed by us) or services that interact or interoperate with CL, e.g. for downloading, uploading, posting, flagging, emailing, search, or mobile use. Robots, spiders, scripts, scrapers, crawlers, etc. are prohibited, as are misleading, unsolicited, unlawful, and/or spam postings/email. You agree not to collect users' personal and/or contact information ("PI").

However, in this case the software does not interoperate with CL in particular, it interoperates with all websites in general.