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Bidder Code c1x Member no
Media Types display TCF-EU Support no
User IDs none USP/CCPA Support check with bidder
Supply Chain Support check with bidder COPPA Support check with bidder
Demand Chain Support check with bidder GPP Support check with bidder
Supports Deals check with bidder Prebid.js Adapter yes
IAB GVL ID check with bidder Prebid Server Adapter no
Floors Module Support check with bidder First Party Data Support check with bidder
Multi Format Support check with bidder ORTB Blocking Support check with bidder
Safeframes OK check with bidder Privacy Sandbox check with bidder


The C1X Header Bidding adaptor requires approval from the C1X team. Please reach out to for more information.

Bid params

Name Scope Description Example Type
placementId required Placement ID '12345' string
siteId required Site ID from which the request is originating '999' string
dealId optional Deal ID to get the specific deal from our DSP '123456' string
floorPriceMap optional Minimum floor prices needed from the DSP’s to enter the auction {"300x250": 4.00,"300x600": 3.00} object
pageurl optional Url of the webpage where the request is originating from '' string

"Send All Bids" Ad Server Keys

These are the bidder-specific keys that would be targeted within GAM in a Send-All-Bids scenario. GAM truncates keys to 20 characters.
hb_pb_c1x hb_bidder_c1x hb_adid_c1x
hb_size_c1x hb_source_c1x hb_format_c1x
hb_cache_host_c1x hb_cache_id_c1x hb_uuid_c1x
hb_cache_path_c1x hb_deal_c1x

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