# Auction packages

You can use the
[`auctionPackages`](https://developers.google.com/authorized-buyers/apis/marketplace/reference/rest/v1/buyers.auctionPackages)
resource to do the following:

- [View subscribed auction packages](https://developers.google.com/authorized-buyers/apis/guides/marketplace/view-auction-packages).
- [Subscribe buyers and clients](https://developers.google.com/authorized-buyers/apis/guides/marketplace/subscribe-auction-packages).
- [Unsubscribe buyers and clients](https://developers.google.com/authorized-buyers/apis/guides/marketplace/unsubscribe-auction-packages).

You can't use the Marketplace API to create new auction packages, or view their
targeting details. You can create auction packages and configure targeting
in the [Authorized Buyers Marketplace
UI](https://realtimebidding.google.com/#MARKETPLACE/MarketplaceDiscoveryPlace:marketplaceDiscovery).

When you subscribe a buyer or client to an auction package, you receive
Real-time Bidding bid requests based on a combination of your [pretargeting
configurations](https://developers.google.com/authorized-buyers/apis/guides/rtb-api/pretargeting-configs),
and the targeting details in the auction package.

Unlike pretargeting configurations, auction packages don't impact the
number of bid requests you receive. Bid requests for auction packages are a
subset of the total requests you receive based on your pretargeting
configuration.

In bid requests, auction packages are identified similarly to deals with either
of the following fields:

- **Google** : `BidRequest.adslot[].matching_ad_data[].direct_deal[].direct_deal_id`
- **OpenRTB** : `BidRequest.imp[].pmp.deals[].id`

The preceding fields are populated with the auction package resource ID found
in the auction package's `name`.

Auction packages are different from
[deals](https://developers.google.com/authorized-buyers/apis/guides/marketplace/deals) in the following ways:

- Auction packages are targeting that can be shared between buyers and clients.
- Auction packages don't involve negotiation between a buyer and publisher, and are in effect after a buyer or client subscribes to them.
- Bids for auction packages directly compete on the open auction.