AgentKit: Bridging the Trust Gap in Agentic Commerce
When an AI agent books a restaurant, buys concert tickets, or negotiates a price on your behalf, the website on the other end faces a question it has never had to ask before: is there actually a human behind this software?
On March 17, 2026, Sam Altman's World and Coinbase answered with AgentKit — a developer toolkit that lets AI agents carry cryptographic proof of human backing, embedded directly into the payment layer of the internet.
The timing is no accident. McKinsey projects agentic commerce — transactions initiated and completed by autonomous AI programs — could reach $3 trillion to $5 trillion globally by 2030. Morgan Stanley estimates $190 billion to $385 billion in U.S. e-commerce spending alone will flow through AI agents by the end of the decade. But as these agents multiply, so does the attack surface. One person running a thousand bots to scalp tickets, drain limited inventory, or game loyalty programs looks identical to a thousand legitimate customers — unless you can verify the humans behind the machines.