Dentsu's Carat is partnering with NBCUniversal, Freewheel and AI firm Newton to launch a planning, buying and optimization agent for upfront investments — and one luxury retail client is apparently already using the solution.

None of the parties would name that client. The deal, announced by Dentsu, is one of the most concrete signs yet that media agencies are moving agentic AI from concept to live commercial use in negotiations with major sellers.

Independent agency Tinuiti moved in parallel. It launched what it calls a "Bliss Point Model Context Protocol (MCP) Server," opening its proprietary measurement layer directly to AI agents.

What do these launches actually do?

The two initiatives point at different layers of the media stack:

• Carat's agent handles planning, buying and optimization, and is designed for use in upfront investments alongside NBCUniversal, Freewheel and Newton.
• Tinuiti's MCP server puts audience, creative, media and measurement under one server, exposing the agency's proprietary measurement data to external AI agents.

Together they show agencies betting that agents will soon touch both the transactional side of media and the data plumbing underneath it.

Why are clients nervous?

The launches come with a trust problem. Advertising Week featured several discussions on agentic media, and agency executives are working to head off client concerns about the possibility of rogue activity — AI agents acting outside the boundaries clients set.

That fear is not hypothetical for buyers weighing whether to hand planning and buying decisions to autonomous systems. The executives pushing these initiatives are doing so while simultaneously building reassurance that agents will stay controlled and accountable.

The unnamed luxury retail client already using Carat's solution suggests at least some advertisers are willing to move first — provided the agent operates inside a negotiated, seller-integrated framework with NBCUniversal and Freewheel rather than acting alone in the open market.

What comes next?

Expect the pace of agentic announcements to keep accelerating. With no shortage of news on media agencies moving forward with agentic initiatives, the competitive question is shifting from who has an agent to who can prove theirs is safe enough for clients to hand over budget.