Anthropic's Project Deal: Claude agents ran a marketplace

Project Deal was a one-week internal marketplace experiment Anthropic published on April 24, 2026. Sixty-nine employees in its San Francisco office got $100 each and were paired with Claude agents on both sides of every transaction. The agents struck 186 deals worth roughly $4,000 in real goods.

It produced the first quantified evidence that the model strength on each side of a transaction measurably changes the outcome. Participants represented by Opus 4.5 systematically walked away with better prices than participants represented by Haiku 4.5, and the human counterparties never noticed.

Buyer-side agents are already shipping in ChatGPT, Gemini and Perplexity Comet. Seller-side agents lag. If Anthropic's data holds at scale, undefended catalogs will be repriced down by buyer agents that compare across marketplaces in real time. Sellers should set hard pricing floors at gross-margin thresholds, lengthen attribution windows, and audit agent-readable structured attributes.

No. Nova does not build buyer agents and does not integrate with Anthropic, Project Deal, or any agent-marketplace. It covers the data layer for Amazon (SP-API across 23 marketplaces) and Walmart, where the practical impact of agent-mediated buying first shows up in attribution and margin reports.