Release Notes

January 26, 2026

Support for extended content IDs

Publishers can now send an array of Content IDs (CIDs). A CID is a standardized identifier that describes video content using metadata from trusted third-party providers (such as content classification, ratings, or brand-safety vendors). For more information on how to send CIDs, see Sending extended content IDs to Index Exchange.

Publishers

DSPs

January 26, 2026

Support for inventorypartnerdomain in app and site objects

Publishers using OpenRTB 2.6 can now place the inventorypartnerdomain field in the main app or site objects, rather than the extension objects.

For more information, see:

• For publishers: List of supported OpenRTB bid request fields for sellers

• For DSPs: List of supported OpenRTB bid request fields for DSPs

Publishers

DSPs

January 23, 2026

Updates to our Demand Quality Guidelines

Index has updated our Demand Quality Guidelines to include a new policy:

• For buyers: Political guidelines

• For DSPs: Political guidelines

Buyers

DSPs