TL;DR: When AI agents negotiate media deals on behalf of buyers and sellers, neutral infrastructure is what prevents one party's platform from disadvantaging the other, and it is the practical foundation of trust in an automated market.

The Problem with Non-Neutral Intermediaries

In traditional programmatic advertising, many of the intermediaries sitting between buyers and sellers have a conflict of interest. An SSP owned by a publisher group has an incentive to favour its parent company's inventory. A DSP owned by a walled garden has an incentive to favour its own data and media. Even ostensibly neutral exchanges have proprietary relationships that influence how auctions are run.

These conflicts have always existed, but human decision-making has provided a partial check. Buyers review performance data and can move spend. Sellers evaluate fill quality and can adjust priorities. The decisions are imperfect, but they are made with human judgement applied to visible outcomes.

When AI agents handle deal-making, the stakes of non-neutral infrastructure increase considerably. An agent operating on behalf of a buyer needs to trust that the marketplace it is negotiating through is not structured to favour the sell side. An agent operating on behalf of a seller needs the same assurance in reverse. If the infrastructure is not neutral, the agent cannot serve its principal's interests reliably.

What Neutral Infrastructure Means

Neutral infrastructure in the context of agentic advertising has several defining characteristics.

No proprietary inventory stake

A neutral marketplace does not own media it is also selling. It has no financial incentive to favour one publisher over another, or one buyer over another. Its only interest is in facilitating fair deals between agents.

Transparent governance

The rules of the marketplace are documented and consistently applied. Agents operating within a neutral marketplace can rely on the rules being the same for every participant. Changes to rules are communicated in advance and applied consistently.

Independent audit logs

Every deal negotiated through a neutral marketplace produces an audit log that both parties can access. The log records the negotiation history, the agreed terms, and any approvals that were required. Neither party can alter the record after the fact.

Separation of deal record from delivery

A neutral marketplace holds the deal record and the governance process. It does not also control delivery. This separation means that neither the buy side nor the sell side is dependent on the marketplace for their operational continuity.

How Alkimi Is Built for Neutrality

Alkimi operates as a neutral agentic advertising marketplace. It does not own inventory. It does not operate a DSP or an SSP. Its function is to facilitate negotiations between buy-side and sell-side agents and to maintain the deal records that result.

The DealSheet is the mechanism through which both parties hold a private, shared record of an agreed deal. The buy-side agent and the sell-side agent each hold their own copy. Alkimi maintains the audit log of the negotiation and the approvals workflow.

Neither party needs a direct API connection to the other. The marketplace provides the neutral infrastructure through which agents can communicate, negotiate, and reach agreement without any party having asymmetric access to the negotiation process.

The Protocol Layer

Neutral infrastructure requires neutral standards. The Agent Communication Protocol (AdCP), published by AgenticAdvertising.org, defines the message formats that agents use to communicate during negotiations. Because the protocol is open and published, any agent built to the standard can participate, regardless of which vendor's technology they are running on.

The Agentic Advertising Marketplace Protocol (AAMP), published by IAB Tech Lab, provides the broader governance framework: how agents identify themselves, how deals are structured, and how the lifecycle of an agentic transaction is documented.

These open standards are essential to neutrality. If the protocols were proprietary, participation would require dependency on a specific vendor. Open standards keep the infrastructure genuinely accessible to all market participants.

Why This Matters Now

The advertising industry is in an early stage of evaluating agentic models. The infrastructure decisions made in this period will shape how agent-to-agent advertising functions for years.

Organisations that build their agentic capabilities on neutral infrastructure, governed by open standards, will retain flexibility as the market develops. Those that build on proprietary platforms risk finding themselves in relationships that become costly to exit as agent-to-agent trading becomes standard practice.

Neutral infrastructure is not a philosophical preference. It is the practical foundation of a market where agents can negotiate on behalf of their principals without being structurally disadvantaged by the platform they are operating through.