VAST 4.x compliant ad response — Triton / AdsWizz / Magnite hit this for fill on any audio impression. Currently returns a single InLine creative based on our existing stitched_creative selection; chains to a no-fill response when no creative matches.

Query params (per IAB OpenRTB-Audio convention): slug — article slug being played vertical — content category for matching gdpr_consent — TCF v2.2 consent string gpp / gpp_sid — GPP signal

For SSPs that do programmatic bidding, the upstream RTB integration lands later (year-2 work). This endpoint covers the static-VAST seat application path.