Use when you have URLs and need what is actually on those pages, and no site-specific tool fits: an article, a docs page, a pricing or about page, or a link another tool handed you. Not a search engine, so give it URLs rather than a query, and reach for web.search or news.search when you need to find the pages first. One result, and one billable item, per URL, including URLs that fail to load.
Price
$0.005970 per result. That is the rate you pay for each result the call returns, so the total depends on how many it produces. Billing follows actual usage, so a call that returns fewer results costs less, and a call that costs nothing to serve is free.discover and inspect also return a ceiling for your specific request, which is a maximum you will never be charged above.
Input
Goro forwards your input to the underlying tool unchanged, so any field the
tool accepts works here even if it is not listed above.