Atomic announced a $12.5 million Series A on September 29, led by Klass Capital and Madrona, to expand its AI-based supply-chain planning and execution platform. The Boston startup was founded by former Tesla planning leaders and incubated at DVx Ventures.

The concrete deployment behind the funding is purchasing automation. Atomic says its platform now automates 90% of purchasing for DoorDash’s DashMart business across hundreds of sites. That figure concerns DashMart, not all DoorDash purchasing, and is a company-reported measure rather than an independently audited result.

Atomic models inventory needs, compares possible responses to changing demand or supply, and supports recommendations or automated decisions. Its announcement describes a system that runs alongside existing enterprise resource planning software, connecting planning logic to the orders a business places each day.

In a statement included in the release, DoorDash executive Nick Palefsky described using Atomic to apply operational judgment across its network, including decisions about assortment and supplier substitutions. Good Chop, HelloFresh’s meat-subscription business, also described the software as its engine for supply planning and purchase orders.

The company says its Nucleus AI-agent platform is already used for sales and operations planning preparation, inventory questions and supply-risk checks. New capital will support platform expansion and larger enterprise deployments. Klass Capital’s Adrian Schauer and Madrona’s Matt McIlwain are joining the board.

The significance is narrower than a fully autonomous supply chain: Atomic is extending software from forecasting and recommendations into specific purchasing workflows. The disclosed deployments show where AI-assisted execution is being adopted, while leaving broader reliability and customer-wide financial outcomes unproven.