Vitalik Buterin Envisions AI Agents Transforming Ethereum User Experience

At the OKX Now 2026 Summit in Singapore, Ethereum co-founder Vitalik Buterin shared his vision for the future of blockchain interactions, proposing that AI agents could soon handle transactions without the need for traditional user interfaces. He believes this shift could occur within the next two years.

Buterin illustrated his point with a personal anecdote, explaining how he updated his Ethereum Name Service (ENS) records by simply instructing a local AI agent, bypassing the usual process of using an app and signing transactions. He emphasized that while he did not claim that on-chain applications would disappear, he foresees a future where AI mediates user interactions with the blockchain.

As Ethereum evolves towards a “cryptographic world computer” model, Buterin envisions AI playing a significant role in economic interactions, transaction verification, and security protocols. He also mentioned the upcoming Hegotá upgrade, expected in 2027, which he described as potentially the last fork recognizable to early developers.

However, Buterin expressed caution regarding the risks associated with AI handling transactions. He highlighted concerns about privacy erosion, prompt injection attacks, and the security of AI agents themselves. He referenced a past incident that resulted in significant losses due to vulnerabilities in the user-interaction layer of Ethereum.

Buterin's insights suggest a transformative period ahead for Ethereum, where AI could redefine user engagement with the blockchain, although he acknowledges the challenges that come with such advancements.

New Developments in AI Agents and Ethereum

On October 6, 2026, Mysten Labs and Google Cloud launched the Verifiable Agent Arbiter (VAA), a new evidence layer designed to allow enterprises to cryptographically confirm that their AI agents are operating within their designated authority.

The VAA separates agent activity into two tracks: telemetry data is stored in Google Cloud Storage, while cryptographic proofs are kept on Walrus, Mysten's decentralized data platform, coordinated on the Sui Layer-1 blockchain. This design ensures that sensitive business data remains private while maintaining the integrity of the evidence.

The VAA serves multiple purposes, including dispute resolution, incident reconstruction, long-term record retention, and facilitating agentic commerce. It integrates with Sui’s Agent Payments facilitator and employs the x402 protocol for service discovery and quick settlement.

With the EU AI Act set to take effect in 2027, the VAA aims to help enterprises comply with regulatory requirements, potentially avoiding fines of up to €15 million or 3% of global annual turnover.

This initiative builds on previous collaborations between Mysten and Google, including the support for Google’s Agentic Payments Protocol (AP2) introduced in September 2025.

New Developments in AI Agents

• Wajo, a San Francisco startup founded by Shivani Poddar, has launched an AI agent named Fo, which can perform tasks like making bookings and sending emails.
• Fo operates with its own phone number, email address, and single-use virtual payment cards to enhance user security.
• Fo completed 71% of 104 real-world tasks without human assistance during its testing phase, outperforming its closest competitor, OpenClaw, which achieved a 42% completion rate.
• The internal benchmarks indicate a 94% trust rate for Fo, based on Wajo's own testing methods.
• Vinod Khosla publicly endorsed Fo on September 28, 2026, highlighting its safety features including single-use payment cards and human oversight for task completion.
• Fo entered an alpha program on August 25, 2026, and became publicly available on September 28, 2026.
• Wajo's model includes routing tasks that exceed AI capabilities to human assistants, addressing potential failures in automation.