Great thrill in Frankfurt. Christine Lagarde calls for supervision of artificial intelligence agents who are established in European finance. The President of the European Central Bank fears programs capable of placing orders without human validation and amplifying the slightest market shock.
Meanwhile, these same agents already pay for their purchases among themselves in stablecoins, on lines that the ECB does not control.
Key Points
The President of the ECB wants to bring autonomous financial software under prudential control
Frankfurt fears chain reactions if all players rely on the same models and the same hosts
Coinbase, Google and OpenAI have already standardized payment between machines, including USDC
Brussels plans to postpone its rules on high-risk AI by sixteen months, while the digital euro aims for 2029
Christine Lagarde fears the pack effect of AI agents
However, the word “agent” covers a precise mechanism. A program receives a goal from its owner. It then queries software interfaces and triggers payments without a human validating each step. Eurozone banks are already deploying them for credit scoring and transaction monitoring. But all this worries the boss of the ECB:
“Artificial intelligence agents could amplify financial shocks, cyberattacks and systemic risks. »
Christine Lagarde, President of the European Central Bank
Frankfurt first fears monoculture. If European trading rooms purchase equipment from the same suppliers and deploy models trained on the same data, they will react to the same signal at the same millisecond. Three hosts share around two thirds of the global cloud, and the handful of publishers capable of running these models on an industrial scale can be counted on the fingers of one hand. The ECB's financial stability review already highlighted the concentration of valuations linked to AI and the risk of an abrupt correction on the equity markets.
The previous one is fifteen years old. On May 6, 2010, the Dow Jones lost nearly 1,000 points in a few minutes before regaining them, carried away by algorithms which had all withdrawn from the order book at the same moment. These programs followed rules written by humans. An agent from 2026 decides alone, based on a model that no one audits line by line.
AI agents already pay in stablecoins
Let's talk straight away about the absentees: the Frankfurt diagnosis says nothing about the rails on which these agents already pay their bills. Coinbase launched the x402 protocol in May 2025 (which we recall resurrects the HTTP 402 code, “Payment Required”, which has remained dormant since the birth of the web). A machine pays another machine in USDC, without a bank account or card, for amounts as low as a cent. Settlement takes less than a second.
Google released AP2 in September 2025. This payment protocol for agents brings together more than 60 partners, including Mastercard, PayPal, American Express and Coinbase, and its A2A x402 extension directly connects stablecoins to it. OpenAI and Stripe released their own standards in the same week, with Etsy and Shopify taking the lead in ChatGPT. Dune's public counters recorded hundreds of thousands of weekly x402 payments on Base as of fall 2025.
An agent does not have legal personality. He cannot open a bank account or sign a service contract. A smart contract wallet is configured with a spending limit and immediate revocation of rights. Each payment leaves a time-stamped and public record, which a supervisor can verify without requesting a bank's internal logs. The opacity is housed in the model which decides, when the register keeps track of every cent spent.
The AI Act retreats, the digital euro advances
But the calendar works against this request for supervision. The obligations of the AI Act on high-risk systems were to apply on August 2. The text places credit scoring and insurance pricing among these sensitive uses, which requires banks to provide complete technical documentation and effective human supervision before any commissioning. In its “digital omnibus” package of November 2025, the European Commission proposed extending the deadline to December 2027.
Meanwhile, the ECB is moving forward on its own ground. The Governing Council validated the transition to the next phase of the digital euro (Eurozone MNBC) at the end of October 2025. A pilot is planned for 2027 and a first broadcast in 2029, subject to the green light from the European Parliament and the Council.
