demo · v134 · privacy-sandbox

Seller Batch Builder

Compose a real navigator.getInterestGroupAdAuctionData({ requestSize, perBuyerConfig, sellers: [...] }) request. Add sellers, set their origins and per-buyer configs, see the live request size and per-seller fan-out — and (Android) actually call the API.

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sellers
N+1
old calls
1
v134 calls
2.0
KB request

request body


  


  

    
multi-seller fan-out

    
Before v134: each SSP wanting to run a B&A auction had to call getInterestGroupAdAuctionData separately. That returned a fresh encrypted payload per call, separately encrypted to the buyer key. For N sellers sharing a page → N+1 round trips and N independent payloads.

    
v134: pass an array of sellers in one call. The browser returns one encrypted payload per seller, but they share the buyer-side trusted execution environment — so the buyer servers can batch their bid generation.

  


  

    
see also