Published: 17 September 2026

TL;DR: An agent-to-agent marketplace provides four governance functions: identity verification, mandate enforcement, deal record integrity, and audit access. Together, these functions mean that buyers can demonstrate every deal their agent agreed was within their mandate, and publishers can verify every deal they accepted was within their defined parameters. This is governance expressed through structural design, not through post-hoc monitoring.

The question of what governance an agent-to-agent marketplace provides is not abstract. It has practical answers. A buyer deploying a buy-side agent to negotiate CTV deals needs to know that the marketplace enforces the agent's mandate, not just that the marketplace exists. A publisher accepting agentic proposals needs to know that the buyers they are dealing with are operating under documented governance, not arbitrary agent decisions.

An agent-to-agent marketplace that provides genuine governance does four specific things. Each function has a concrete meaning for both buyers and publishers.

Identity Verification

Before any negotiation begins, both agents prove who they represent. The buy-side agent provides credentials that verify it is authorised to negotiate on behalf of the buying organisation. The sell-side agent provides credentials that verify it represents the publisher.

Why this matters: Without identity verification, a buy-side agent cannot know that the sell-side agent it is negotiating with actually represents the broadcaster it claims to represent. Without verification of the buy-side agent's identity, the publisher cannot confirm that the agent is authorised by a real buying organisation with a documented mandate.

Identity verification is the foundation of every other governance function. A deal record written between two verified agents is credible. A deal record written between agents who have not verified their identities is not.

Mandate Enforcement

An agent-to-agent marketplace enforces mandate compliance by declining or escalating proposals that fall outside the parameters of the relevant mandate. A buy-side agent operating under a mandate with a CPM ceiling of £30 for live sport inventory cannot agree a deal at £35. The marketplace enforces this at the point of negotiation, not after the campaign.

What this means in practice: A buyer can state that every deal their agent agreed was within their mandate, because the marketplace's mandate enforcement means a deal outside the mandate cannot be completed. The mandate is not just a document the buyer keeps internally. It is an enforced constraint on what the agent can agree.

This is the operational expression of earned autonomy: agents operate with real authority within defined parameters. The authority is real because the mandate enforcement is real.

Deal Record Integrity

When two agents reach agreement, the terms are written to a DealSheet: a bilateral record held in shared state by both parties. The deal record is written at the point of agreement, before any impression is served. It is not created by one party and passed to the other. It is the documented output of the negotiation.

What this means for buyers: The DealSheet is an independent record of what the agent agreed. The buyer does not need to rely on their DSP's record or the publisher's SSP record. The bilateral record exists independently of both parties' internal systems.

What this means for publishers: The publisher can retrieve the DealSheet independently post-campaign to verify that the terms agreed by the buy-side agent match what was delivered against. The record belongs equally to both parties.

Deal record integrity is the structural difference between a bilateral deal negotiation and a conventional programmatic transaction. In conventional programmatic, two separate records are created and compared post-campaign. In a bilateral marketplace, one shared record is created at agreement time.

Audit Access

Both parties can retrieve the deal record independently, post-campaign, without requiring the other party's cooperation. This is not a courtesy feature. It is a governance requirement.

Why independent audit access matters: A buyer auditing whether their agent operated within its mandate needs to retrieve every DealSheet for the relevant campaign period and verify that each agreed CPM was within the mandate's ceiling for the relevant content category. If the buyer can only access the DealSheet by asking the publisher, or by asking the marketplace to provide it, the audit depends on third-party cooperation. Independent audit access removes that dependency.

The same applies to publishers. A broadcaster verifying that every deal they accepted was within their stated parameters needs to retrieve the DealSheets and check them. If that retrieval requires asking the buyer, the audit is not independent.

What This Means Together

The four governance functions work together. Identity verification means the parties to a deal are confirmed. Mandate enforcement means the deal terms are within the documented parameters of both parties. Deal record integrity means there is a single shared reference for what was agreed. Audit access means both parties can verify compliance independently.

A marketplace that provides all four functions gives buyers and publishers the ability to answer the governance question directly: did the agent operate within its mandate? The answer does not depend on trusting that the marketplace monitored and enforced correctly. It depends on retrieving the records and checking.

That is what governance through structural design means. The structure makes the audit possible, not the monitoring.