Key Takeaways
Keyrock’s Might 2026 report discovered AI brokers settled $73M throughout 176M transactions in simply 12 months, with 98.6% in USDC.Coinbase and Stripe every span 5 of 6 fee stack layers, whereas incumbents deployed over $8B in acquisitions.MiCA, the GENIUS Act, and the EU AI Act all hit enforcement by August 2, 2026, with none masking machine-to-machine funds.
Keyrock ‘Who Pays the Agent’ Evaluation: USDC Dominates 98.6% of AI Agent Funds
The report, co-published with Coinbase, Tempo, and Virtuals, paperwork how machine-to-machine funds moved from a theoretical idea to a functioning ecosystem in a single yr. Brokers now pay for API entry, knowledge queries, and compute sources in actual time, with no human within the loop. The typical transaction measurement has stabilized close to $0.48.
Coinbase constructed x402, a protocol that repurposes the long-dormant HTTP 402 standing code to allow stablecoin funds between machines. Stripe and Tempo co-authored the Machine Funds Protocol, referred to as MPP, a payment-method-agnostic commonplace that handles stablecoins, bank cards, and Lightning Community funds via a single HTTP stream. Google launched AP2, an authorization layer that enables customers to delegate spending authority to brokers utilizing cryptographic mandates. Visa prolonged its present card rails to provision AI-ready tokenized credentials brokers can current at checkout.
Keyrock’s evaluation reveals these 4 protocols usually are not purely competing. They’re assembling right into a layered stack. AP2 handles authorization. x402 and MPP deal with settlement beneath it. The query the report focuses on is which corporations seize probably the most layers, and due to this fact entice probably the most worth.
In keeping with the report, Coinbase and Stripe every span 5 of six stack layers. Coinbase controls settlement via Base, wallets via its AgentKit platform, the fee protocol via x402, and governance as a companion in AP2. Stripe mirrors this via Tempo for settlement, Privy for wallets, Bridge for routing, and MPP for the protocol layer. Circle covers 4 layers. Google and Visa presently span two and one, respectively.
The economics make crypto rails near necessary for this market. Keyrock’s knowledge reveals that 76 p.c of agent transactions fall under the $0.30 fixed-fee ground charged by card networks. A USDC switch on Base prices roughly $0.0001, which is roughly 0.03 p.c of a $0.31 fee. On Stripe, that very same fee would value $0.309 in charges, leaving the service provider with $0.001.
Some of the concentrated findings within the report is stablecoin dominance. Of the 176 million funds recorded, 98.6 p.c settled in USDC. Keyrock flags this as a systemic danger that few within the trade are publicly addressing. If Circle faces a regulatory problem, a de-peg occasion, or a technical outage, the agent funds ecosystem has no fallback.
Incumbents moved to safe positions throughout the stack via acquisitions. Capital One acquired Brex for $5.15 billion. Mastercard bought BVNK for $1.8 billion. Stripe acquired Bridge for $1.1 billion. Collectively, these and associated offers symbolize greater than $8 billion deployed in twelve months.
Keyrock notes that machines already dominate onchain exercise. On Gnosis Chain, AI brokers through the Olas community account for over 75 p.c of Protected transactions on peak days. On Base and Optimism, bots and automatic contracts eat greater than 50 p.c of gasoline. The present exercise is essentially extractive, together with arbitrage and quantity farming. The shift to productive agent commerce, the place brokers pay for companies that create worth for finish customers, is what the brand new infrastructure is designed to allow.
The report additionally factors to the failure of OpenAI‘s ChatGPT Instantaneous Checkout, which was shelved in March 2026 after solely round 30 Shopify retailers actively used it. The product lacked gross sales tax assortment, fraud prevention, and multi-item cart assist. Keyrock interprets the result as affirmation that brokers transacting via protocol endpoints, not visible checkout flows, is the viable mannequin.
Regulatory uncertainty is the binding constraint recognized throughout all sections. Three main frameworks attain enforcement inside weeks of one another: MiCA’s transitional interval ends July 1, 2026, the GENIUS Act’s implementation deadline falls July 18, and the EU AI Act’s high-risk obligations take impact August 2. None include provisions for autonomous machine-to-machine transactions.
Legal responsibility is unresolved. With bank cards, retailers bear chargeback danger and customers obtain safety. With stablecoins, as soon as funds land in a service provider pockets they can’t be recalled. As x402 creator Erik Reppel of Coinbase instructed Keyrock, the chance strikes completely to the buyer. American Categorical moved first to deal with this commercially, launching Agent Buy Safety on April 14, 2026, masking inaccurate purchases made by verified brokers inside its registered ecosystem.
The report concludes that the machine economic system already exists. It isn’t but doing significant commerce. The infrastructure is prepared. The regulatory readability shouldn’t be.
