Marker & Square, LLC Information

AI agents now plan, bid, place, and optimize media with less human review than any buying model that came before, and most brands are governing that shift with rules written for human traders. Marker & Square aims to close that gap. We are building the framework defining decision rights, guardrails, and accountability around AI-driven media so that speed does not come at the cost of brand safety, suitability, or measurement. The real risk is not that an agent makes a bad buy. There is a governance problem when no one can explain why it made the buy at all or why the brand advertising ran adjacent to negative, irrelevant, or offensive content. The work falls into four areas: Media governance. Decision rights, guardrails, and audit trails for automated buying across programmatic, social, CTV, and retail media. Brand assurance. Suitability and safety frameworks that hold up when an agent, not a trader, makes the call. Growth consulting. Measurement, data strategy, and KPI architecture, and brand and performance planning tied to business outcomes. AI-built tools. Proprietary products, starting with ChannelMatch, a channel inclusion engine built as an open-box alternative to the black-box vendors. Marker & Square was founded by Chris Harrington, who spent more than 20 years leading digital and programmatic teams at Dentsu and OMD. His work spans FedEx, the NFL, Audi, AOL, and Amazon, and he has been featured in CNN, Wired, and USA Today. Based in the Charlotte area, working with CMOs, media leaders, and agencies nationwide.