Moonpay's PayBox Vault Lets AI Agents Move Money Without Custody

Moonpay says agentic payment fraud typically comes from a stolen credential or a leaked card number. A third vector is a single system that can move funds once it is compromised. The vault targets each vector with a specific defense. Split wallet keys mean a compromised phone does not hand an attacker the ability to move funds, since no device holds a complete key. Visa's protocol keeps raw card numbers out of the transaction entirely. Single-use passkey approvals mean a captured authorization cannot be replayed or expanded into broader access.

“The card hid the cash. The phone hid the card. This is the era where money disappears into conversation. Billions of AI agents are coming online, and every one of them will need to hold, move, and spend money safely. Someone had to build the trust layer for that world. We just did,” Ivan Soto-Wright, chief executive and founder of Moonpay, said in the announcement.

The vault runs on infrastructure from Sodot, a key management firm Moonpay acquired earlier this year. Sodot secures more than $50 billion in assets and over 10 million wallets for crypto companies. Moonpay pairs that infrastructure with its base of more than 1,700 enterprise clients.

The vault supports Solana and EVM-compatible networks, including Ethereum, Base, Arbitrum, Polygon, Hyperliquid, Tempo and Robinhood Chain, with more planned. Payments route through x402, an open standard for agent-initiated transactions, letting the AI pay any service built to accept them. Restaurant reservations and travel bookings are live now. Shopping with major online retailers is also available, with more integrations rolling out weekly.

Moonpay also disclosed that support for additional AI platforms is coming, along with deeper access to decentralized finance. That includes letting AI agents route token swaps and trade perpetual futures. Liquidity position management is also planned, all under the same user-set approval rules. For traders already using Claude or ChatGPT for research, the update turns those conversations into a direct line to onchain execution, without giving up control of the wallet.

Separately, Moonpay now accepts Discover Network payments, giving U.S. cardholders a third major card option for buying crypto on its platform.