Overview

Amazon has enhanced the Search Query Performance Report endpoint in the Selling Partner API (SP‑API) to accept a list of ASINs in a single request. The change, rolled out globally in early 2024, lets brand‑registered sellers pull search‑term data for roughly 18 products at once instead of one‑by‑one. Reducing the number of calls needed speeds up portfolio‑level analytics and frees up API quota for other operations.

Key Points

• Batch size limit — Each request can contain up to 200 characters, which translates to about 18 standard 10‑character ASINs separated by spaces.
• Endpoint unchanged — The same GET_BRAND_ANALYTICS_SEARCH_QUERY_PERFORMANCE_REPORT URL is used; only the asin parameter now supports multiple values.
• Rate limits stay the same — Amazon has not altered the per‑minute or per‑day throttling rules, so efficiency gains come solely from packing more data into each call.
• Full backward compatibility — Single‑ASIN queries continue to work exactly as before, ensuring existing integrations do not break.
• Global coverage — The multi‑ASIN capability is active across all Amazon marketplaces, from the US and EU sites to Japan and newer regions.
• Immediate quota impact — A seller who previously needed 100 calls to evaluate 100 SKUs can now cover up to 1,800 SKUs with the same quota, assuming optimal batching.

How Multi‑ASIN Queries Work

1. Compose a space‑separated ASIN string — List the desired ASINs in the asin query parameter, e.g., asin=B01N5IB20Q B07PGL2ZJ5 B08L5V5Z9K. The API treats the space as a delimiter and returns data for all three products in one payload.
2. Observe the 200‑character ceiling — Count characters including spaces; a string of 18 ASINs (B0XXXXXXXX repeated) reaches roughly 200 characters. If the limit is exceeded, the request returns an error, so sellers must trim or split the list.
3. Send the request as usual — Use the same authentication headers, marketplace ID, and date range parameters that were required for single‑ASIN calls. The response format mirrors the original, delivering a row for each ASIN‑keyword combination.