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Anthropic created a test marketplace for agent-on-agent commerce

In a recent experiment, Anthropic created a classified marketplace where AI agents represented both buyers and sellers, striking real deals for real goods and real money.

In Brief

Posted:

2:43 PM PDT Β· April 25, 2026
AI, startups
Image Credits:Getty Images

Anthropic created a test marketplace for agent-on-agent commerce

In a recent experiment, Anthropic created a classified marketplace where AI agents represented both buyers and sellers, striking real deals for real goods and real money.

The company admitted this test β€” which it called Project Deal β€” was only β€œa pilot experiment with a self-selected participant pool” of 69 Anthropic employees who were given a budget of $100 (paid out via gift cards) to buy stuff from their coworkers.

Nonetheless, Anthropic said it was β€œstruck by how well Project Deal worked,” with 186 deals made, totaling more than $4,000 in value.

The company said it actually ran four separate marketplaces with different models β€” one that was β€œreal” (where everyone was represented by the company’s most-advanced model, and with deals actually honored after the experiment) and another three for study.Β 

Apparently, when users are represented by more advanced models, they get β€œobjectively better outcomes,” Anthropic said. But users didn’t seem to notice the disparity, raising the possibility of β€œβ€˜agent quality’ gaps” where β€œpeople on the losing end might not realize they’re worse off.”

Also, the initial instructions given to the agents didn’t appear to affect sale likelihood or the negotiated prices.

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