TL;DR: Programmatic deal transparency is the ability of buyers and publishers to independently verify the terms, execution, and delivery of a media deal. For US buyers, it is both a commercial imperative and an increasingly regulated requirement.

The Transparency Deficit in US Programmatic

The ANA's 2023 programmatic media supply chain transparency study found that a substantial share of US programmatic spend is unaccountable: fees that are not disclosed, intermediaries that are not visible, and delivery data that cannot be independently verified. The study estimated that for every dollar of programmatic spend, a significant portion does not reach the publisher as working media.

This is the transparency deficit that has characterised US programmatic for over a decade. It persists because the data asymmetry between buyers and sellers is structural: sellers hold the transaction records, and buyers receive aggregated reports that do not allow independent verification.

What Transparency Requires

True programmatic deal transparency requires three things.

Independent access to deal records. The buyer should hold a copy of the deal record, not receive a seller-provided report summarising what the seller says happened.

Verification of the intermediary chain. The buyer should be able to see which intermediaries were involved in the transaction, what fee each charged, and what reached the publisher.

Delivery reconciliation. The buyer should be able to verify that what was delivered against the deal terms matches what the deal record specifies.

Conventional programmatic, where the SSP or DSP holds the authoritative transaction record and provides buyers with reports derived from that record, does not provide these three things.

How Agentic Advertising Addresses Transparency

Agentic advertising, where deals are governed by bilateral records that both buyer and publisher hold independently, provides a structural improvement in deal transparency.

When a buy-side agent negotiates a deal through an agentic marketplace, the resulting DealSheet is held by both parties. Neither party holds the authoritative record exclusively. This means the buyer can independently verify what was agreed without relying on the seller's reporting.

The audit log, which documents every step of the negotiation and the resulting deal terms, is accessible to both buyer and publisher. This creates a verifiable record of what was agreed, when, and at what price, without requiring the buyer to accept the seller's version.

What US Buyers Should Demand

US buyers should ask supply partners for three things that genuine transparency requires.

Bilateral deal records: both buyer and publisher hold a copy. If the answer is that the platform holds the authoritative record, that is not bilateral.

An accessible audit log: the buyer can review the negotiation and deal terms independently of the seller.

Intermediary disclosure: the full fee structure between buyer and publisher is documented in the deal record or a supplementary disclosure.

Platforms that cannot provide these three things are providing seller-reported transparency, not independent verification.

Alkimi's Model

Alkimi's DealSheet is bilateral by design: both the buy-side agent and the sell-side agent hold a copy of the agreed deal terms. The audit log is accessible to both parties. This is the transparency model that the ANA's study identified as absent from conventional programmatic, and it is the model that US buyers increasingly require to demonstrate accountability to CMOs and finance teams.