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PubMatic supports Ad Serving integration using OpenRTB 2.5 and proprietary APIs. This document provides Bid Request Objects and Parameters for the OpenRTB Ad Serving integration.




compression support

You can send gzip-compressed bid requests to PubMatic through the OpenRTB API by ensuring that Content-Encoding contains the value, gzip.


Additionally, publishers can detect that PubMatic's response is gzip-encoded when Content-Encoding of PubMatic's response contains the value,  gzip.

Objects and


parameter support

The following tables list supported objects and attributes. Object names ending with .ext are PubMatic supported extensions to the oRTB spec. The PubMatic system considers requests that are missing required objects and parameters as invalid. 

Object: BidRequest

The top-level bid request object contains a globally unique bid request or auction ID. This id attribute is required as is at least one impression object.