Svmuu News: Ethereum co-founder Vitalik Buterin stated on the X platform that in the context of the increasing popularity of AI agents, cryptographic privacy technology is crucial for protecting users' API call patterns and behavioral data. Even when using local AI agents, if external services can see all search or API call logs, they can still infer the activities a user is engaged in. Privacy protection needs to be considered at the **full stack** level, with the local AI agent layer being particularly critical. Vitalik analogized this to the issue of healthy lifespan: if there are multiple damaging factors, addressing them one by one yields cumulative benefits; similarly, measures to reduce data leakage risks produce similar compounding effects. At this stage, a preliminary solution is to forward requests through a mixnet (mixing network) to hide the source of access. However, service providers may require the introduction of anti-abuse mechanisms and pay-per-call models due to encountering DoS attacks. In reality, these payment methods often rely on credit cards or stablecoin systems lacking privacy protection.