TL;DR: Agentic advertising is an emerging model where AI agents handle media negotiation, deal-making, and campaign execution on behalf of buyers and sellers, with humans setting the rules and approving key decisions.

The Short Answer

Agentic advertising describes a system in which software agents, acting on behalf of advertisers and media owners, carry out the commercial processes of media buying and selling. That includes finding inventory, negotiating terms, agreeing deals, and in some cases executing campaigns, all without a human manually managing each step.

The word "agentic" refers to the idea of agency: the capacity to act. In this context, AI agents are given a defined scope of authority and a set of objectives. They act within those boundaries and escalate decisions to humans when they reach the limits of their mandate.

How Is This Different from Programmatic Advertising?

Programmatic advertising automated the transaction layer of media buying: bidding, targeting, and delivery. Agentic advertising goes further. Agents do not simply execute pre-programmed rules. They reason about objectives, interpret context, and negotiate outcomes dynamically.

In a programmatic system, a human sets bid parameters and the system executes. In an agentic system, a buy-side agent might identify a group of publishers, evaluate their audiences against campaign goals, negotiate pricing and terms, and present a proposed deal for human review, all before a single impression is served.

What Does an Agentic Advertising Workflow Look Like?

A practical agentic advertising workflow follows a progression from observation to action. This is sometimes called the earned autonomy model:

- Observe: the agent monitors available inventory, pricing signals, and campaign performance. - Recommend: the agent surfaces options and explains its reasoning to a human planner. - Draft: the agent prepares a deal proposal, including terms, floor prices, and targeting criteria. - Human-approved action: a human reviews and signs off on the proposed deal. - Bounded automatic action: within agreed limits, the agent executes and manages delivery without requiring sign-off on every individual decision.

Humans stay in the loop at each meaningful decision point. The agent handles the information-gathering and analysis work that would otherwise take a planning team hours to complete.

What Protocols Support Agentic Advertising?

Two key frameworks are emerging to standardise how agents communicate and transact.

The Agent Communication Protocol (AdCP), published by AgenticAdvertising.org, defines how buy-side and sell-side agents exchange structured messages. It covers the format and content of negotiation signals, including offer, counter-offer, and acceptance messages.

The Agentic Advertising Marketplace Protocol (AAMP), published by IAB Tech Lab, provides a broader framework for how agentic transactions fit into existing ad infrastructure. It addresses identity, auditability, and the governance of automated decisions.

Together, these standards give agents a shared language and a defined process for reaching agreements without requiring bespoke integrations between every buyer and seller.

Where Does Alkimi Fit?

Alkimi operates as a neutral agentic advertising marketplace. Its DealSheet mechanism gives both the buy-side and sell-side agent a private, shared record of an agreed deal. Neither party needs a direct API connection to the other. The marketplace holds the deal record, manages the approvals process, and maintains the audit logs that show what was agreed and by whom.

This approach is designed for organisations that want to participate in agentic advertising without replacing their existing systems. Alkimi handles negotiation and deal governance. Everything else stays where it is.

Why This Matters for US Buyers

US advertising teams are under consistent pressure to reduce operational costs, improve targeting accuracy, and demonstrate measurable return on ad spend. Agentic advertising addresses each of these pressures by reducing the manual workload associated with deal-making and by enabling faster, better-informed decisions.

The shift is gradual. Most US agencies are at the observation and recommendation stage today. Full agentic execution, where agents close deals and manage delivery within human-set boundaries, is a near-term development rather than a current standard.

Understanding the definition now puts buyers in a position to evaluate vendor claims accurately and to prepare their teams for a material change in how media is traded.