Agencies race into agentic buying while managing client "rogue agent" fear

In the space of one Advertising Week, Dentsu's Carat partnered with NBCUniversal, Freewheel and Newton on a planning, buying and optimisation agent; Tinuiti launched a "Bliss Point" Model Context Protocol server that exposes its measurement layer to AI agents; and Stagwell relaunched Assembly as Stagwell Media around an agentic system called Machine OS. The question the piece actually asks is how agencies keep clients comfortable with autonomy when the news is full of rogue agents and hacks. The industry's answer is human hand-holding. "Every task and everything we do sits on a sliding scale of low to high human oversight... We're not going to live in a world where robots are doing our job," said Rebekah Shalit, head of platforms at Dentsu. Freewheel chief product officer David Dworin was blunter: "Most agentic systems are either designed with a human that has to approve everything, or very specific controls that can keep it from getting into trouble. We're sort of working up the comfort and maturity curve right now." WPP Media's Lauren Wetzel, who runs agentic development, said governance is built in, with "explicit controls, approval thresholds, accountable human oversight" wherever there is a financial or activation impact. Carat chief investment officer Carrie Drinkwater took the bullish line, framing agentic as compound learning: "If we don't start now, we'll be behind."

The crux

Agentic buying is being sold as efficiency, but the thing actually being negotiated in every client conversation is accountability, because no agency wants to be the one explaining why an autonomous buyer spent the budget in the wrong place.

Sell-side read

For publishers, agentic buying is a demand-side change you must be readable by: agents route spend toward inventory they can evaluate cheaply, so machine-readable data, clean deal terms and verifiable quality signals become the price of staying in the bid, not a differentiator.

Watch

whether the IAB Tech Lab AAMP stack or the rival Ad Context Protocol wins enough adoption to standardise how publisher inventory is exposed to buyer agents.