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Both tools return JSON with the same shape as the REST search endpoints: one result per matched search term, with a rank history, a summary, and the latest top products.

search_keywords

Search rank history for one or more keywords. The similar method matches related terms. A query for matcha also returns matcha powder and matcha whisk. The exact method matches the query text only.

search_asin

Find the keywords that rank for one or more ASINs. ASIN input is not case sensitive.

Data window

Results are clipped to your plan’s history window. The Pro plan returns the last 24 monthly periods. The Studio plan returns all monthly periods. Weekly results cover the last 6 weeks on all plans.