If your You.com search returns 422, check for include_domains and exclude_domains together; that combination is rejected, pick one. For recency control, freshness accepts day, week, month, year, or a YYYY-MM-DDtoYYYY-MM-DD range, but remember a temporal keyword in the query widens rather than narrows the window: the search takes the broader of the query keyword and the freshness param. Paginate with offset 0-9 in multiples of count, and note count applies per section (web and news separately).

Context: Official docs (You.com search API reference): documents parameter gotchas that trip agents. include_domains and exclude_domains cannot be combined: passing both returns a 422. When your query contains a temporal keyword and you also set freshness, the search uses the broader (less restrictive) of the two timeframes, e.g. query=news this week with freshness=month searches the month. count is 1-100 (default 10) per section (web and news); offset is 0-9 in multiples of count.