MetaMask has launched Agent Wallet, a product that enables AI agents to access decentralized finance (DeFi) while keeping transactions constrained by user-defined controls. The controls include spend limits, protocol allowlists, and a choice between two operating modes: Guard Mode and Beast Mode.

According to MetaMask's official launch announcement, the release centers on giving automated agents full DeFi access while applying default security measures on every transaction. The launch positions one of the most widely used self-custodial wallets—reported to serve tens of millions of monthly active users—at the intersection of two rapidly converging trends: autonomous AI agents and onchain financial automation.

What Is an Agent Wallet?

An agent wallet is a wallet that an AI agent can operate on a user's behalf. Instead of a person manually signing each action, software can transact within limits that the user defines in advance. This concept is further described in the Agent Wallet documentation.

The launch follows other recent MetaMask initiatives, including its Money Account with stablecoin yield and wallet spending capabilities, as well as its Polymarket prediction market integration.

How the Named Controls Shape Agent Behavior

Spend limits cap how much value an agent can move, setting a ceiling on transactions so that an automated process cannot exceed a preset amount.

Protocol allowlists restrict which DeFi protocols an agent may interact with, meaning the agent is confined to pre-approved destinations rather than the entire onchain landscape. The concept of scoping onchain agents to defined boundaries also appears in broader industry efforts such as the OKX AI Marketplace for onchain AI agents, reflecting a wider push across the crypto sector to build guardrails for non-human actors operating onchain.

The two operating modes present a trade-off between restraint and autonomy. Guard Mode signals a more conservative posture, while Beast Mode grants greater freedom for the agent to act. CryptoSlate characterized the design as giving AI agents a DeFi wallet "with a leash," capturing the balance between autonomy and permission that the modes represent.

Why Configurable Safety Matters

Together, spend limits, protocol allowlists, and the mode selection let a user determine how much latitude to grant an agent. That combination allows one user to keep an agent tightly restricted while another permits broader activity, accommodating different risk preferences.

For users, the practical appeal lies in retaining boundaries and transaction oversight while delegating routine DeFi actions to software. The release framing prioritizes these control features over broader ecosystem or adoption claims. As AI-driven trading and automated portfolio management tools proliferate across the crypto industry—with multiple wallets, exchanges, and infrastructure providers exploring agent-compatible features—the question of how to safely delegate financial authority to software has become a central design challenge. MetaMask's approach of embedding configurable constraints directly into the wallet architecture reflects one model for addressing that challenge at the custody layer.