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Europe 2026

Building safe Payment Infrastructure for the autonomous economy — Steve Kaliski, Stripe

Steve Kaliski

Overview

This talk addresses the critical need for secure payment infrastructure in an increasingly autonomous economy, where AI agents will act as economic actors. It highlights the inherent risks of agents transacting online, such as purchasing from incorrect vendors, selecting the wrong items, or spending unintended amounts. The core thesis is that while discovery and exploration benefit from non-determinism, financial transactions require strict determinism to ensure safety and prevent fraud.

Who should watch

Key takeaways

Notable quotes

Steve Kaliski: *Discovery and exploration benefit from non-determinism. But credentials, payments, and checkout require determinism.*
Steve Kaliski: *Agents are already economic actors. They have their own currency and tokens.*
Steve Kaliski: *Discovery we should keep with non-determinism that's perfect. Payments and checkout and credentials we want to shift towards exclusively deterministic.*

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Unofficial community note. Prefer the recording for nuance.