OpenRTB 2.5

OpenRTB 2.5 remains available for established Nexus integrations. New integrations should use OpenRTB 2.6.

Preserve the negotiated version

This section documents legacy request and response examples. Preserve the protocol version agreed during onboarding; do not silently send a 2.6 payload while advertising x-openrtb-version: 2.5.

The following pages cover Image Display, Rich Media, Popunder, instream and outstream video, rewarded video, and Native 1.1/1.2.

Official reference: IAB Tech Lab OpenRTB 2.5 specification.