August 13, 2026: Auctions bidding is available via POST .../aftermarket/listings/bids
View as MarkdownAugust 13, 2026API
Auctions
New
Related: Auctions listing availability checks are available via POST .../aftermarket/listings/available, Auctions Instant Purchase APIs are available for Closeout domains
We've added POST /v1/customers/{customerId}/aftermarket/listings/bids so you can place up to 20 bids per request on eligible Expired Auction listings. Each bid requires a listingId, bidAmountUsd (USD micro-units), and tosAccepted: true. Partial success returns 207 Multi-Status with per-bid status and failureReason. Existing integrations are unaffected; this endpoint is additive.
You can use the MY alias for {customerId}. Authenticate with a legacy API key (sso-key).
Links
- Auctions reference — Place multiple bids
- Place bids on auction listings — end-to-end bidding guide
- Product announcement — launch context
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