Vitalik Buterin signals ZK payments as the next standard for the agent era
Vitalik Buterin wants your AI agent to pay for things without anyone knowing its yours. The Ethereum co-founder has pointed to zero-knowledge payments and ZK APIs as the likely standard for privacy and security in a future where autonomous AI agents transact on your behalf. Why AI agents need a privacy upgrade Buterin‘s concern is specific: even if an AI agent uses a pseudonymous identity, an observer can correlate its requests over time and re-identify the user behind it. His proposed solution involves ZK payments and what he calls “ZK API Usage Credits.” These would allow AI agents to make anonymous calls to language models and other services without leaving breadcrumbs that link back to a single identity. The credits function as a privacy wrapper, letting agents authenticate and pay without revealing who’s footing the bill. The tech getting cheaper, fast The GKR protocol, anticipated for deployment in late 2025, is projected to cut Ethereum ZK verification costs in half. For networks already built on ZK architecture, the implications are significant. zkSync Era and StarkNet could potentially facilitate up to 43,000 transactions per second with this upgrade. StarkNet currently processes around 27 million monthly transactions and already reduces gas fees by roughly 90% compared