MetaMask Launches Agent Wallet for AI Agents With Built-In Security Controls and Transaction Protection

MetaMask has launched Agent Wallet, a self-custodial wallet for AI agents to autonomously trade on-chain. It addresses security risks like prompt injection by offering user-defined controls, transaction simulation, and up to $10,000 in protection. The wallet features a restrictive "Guard Mode" and a more autonomous "Beast Mode," both requiring 2FA for suspicious transactions. The launch follows similar AI wallet infrastructure from Coinbase and MoonPay.

MetaMask Agent Wallet launch

• ▪The product is initially available to approximately 200 users through a limited Early Access Program, with a wider rollout planned for summer 2026
• ▪The wallet allows AI agents to autonomously execute on-chain transactions while operating within user-defined security controls
• ▪MetaMask launched Agent Wallet, a self-custodial wallet for AI agents, on June 8, 2026
• ▪The wallet supports agent frameworks including OpenClaw, OpenAI Codex, Claude Code, and Nous Research Hermes Agent

AI agent security risks

• ▪Many current AI agent projects create security risks by giving agents direct access to private keys, which could lead to fund loss
• ▪Prompt injection attacks, where malicious instructions are used to compromise an AI system, are a significant risk for crypto agents
• ▪MetaMask's Zhen Yu Yong stated that it is impossible to guarantee a Large Language Model (LLM) won't be tricked by prompt injection

Transaction control modes

• ▪MetaMask Agent Wallet features two operating modes: Guard Mode for high oversight and Beast Mode for greater automation
• ▪In Guard Mode, transactions that exceed set rules or are flagged as suspicious require two-factor authentication (2FA) to proceed
• ▪Guard Mode requires users to pre-define spending limits, approved protocols, and other operating policies
• ▪Beast Mode allows for more hands-off operation but still requires 2FA for any transaction that threat detection flags as malicious

Technical security architecture

• ▪The wallet supports multiple chains, including Ethereum, Linea, Arbitrum, Avalanche, Optimism, Base, Polygon, and BNB Chain
• ▪The wallet's security infrastructure includes transaction simulation, Blockaid-powered threat detection, and MEV protection
• ▪The wallet uses Cubist's trusted execution environment technology to keep private keys isolated within a hardware enclave during signing
• ▪MetaMask Agent Wallet offers up to $10,000 per month in Transaction Protection coverage for eligible transactions

Competing AI agent wallets

• ▪In March 2026, MoonPay integrated Ledger hardware wallets to enable human-approved AI transactions
• ▪In February 2026, Coinbase launched Agentic Wallets, a self-custodial wallet designed for AI agents
• ▪MoonPay also launched the Open Wallet Standard, an open-source framework for AI agents to manage wallets and funds across blockchains