MoonPay's PayBox lets users initiate crypto payments, book services, and shop directly through AI chat assistants, while keeping asset control with non-custodial vaults and Passkey authentication
AI chat assistants are moving beyond simple Q&A and content generation, with new products now aiming to handle real-world financial transactions. MoonPay's latest launch, PayBox, is designed to let users initiate payments, book restaurants, shop online, and even arrange travel-all within conversations on platforms like ChatGPT or Claude. The company says PayBox combines an AI chat interface with crypto wallet and payment card functionality, allowing users to describe what they want in plain language and have the AI handle the search, selection, and payment setup in a single workflow.
AI Payments Meet Non-Custodial Security
Unlike traditional payment tools, PayBox is built on a non-custodial architecture. This means users retain control of their assets at all times, with the AI assistant only able to prepare transactions-not execute them. Actual payments require explicit user approval through Passkey authentication, which typically uses biometrics or hardware-based security. MoonPay claims this approach balances the convenience of AI-driven automation with the security and autonomy valued by crypto users. The system uses Multi-Party Computation (MPC) and Trusted Execution Environments (TEE) to split private keys across secure environments, reducing the risk of theft or unauthorized access.
Conversational Payments and the x402 Standard
PayBox integrates with services like AgentRes.dev for restaurant bookings, Purch.xyz for online shopping, and BRIJ.fi for flight reservations. As users make requests in ChatGPT or Claude, the AI leverages these integrations to build the payment flow, but always requires user confirmation before funds move. The product supports two operational modes: "Always Ask," which prompts for Passkey approval on every transaction, and "Autonomous," which lets users predefine spending limits and permissions for the AI to act within. Underpinning these capabilities is the x402 Agent Payment Standard, a protocol originally developed by Coinbase and now managed by the Linux Foundation. The standard aims to let AI agents interact with a wide range of merchants and payment services through a unified interface, potentially expanding conversational payments beyond isolated demos into broader digital finance infrastructure.
Network Support and Market Context
Currently, PayBox supports Solana and several EVM-compatible blockchains, including Ethereum, Base, Arbitrum, Polygon, Optimism, Hyperliquid, Tempo, and Robinhood Chain. Users can manage assets across these networks without consolidating funds on a single chain. MoonPay has indicated plans to expand PayBox's cross-chain capabilities over time. The company's broader AI strategy includes previous launches like MoonPay Agents, Open Wallet Standard, and MoonAgents Card, as well as acquisitions of AI startups focused on accounting and trading. As conversational payments evolve, they may reshape how users interact with financial services, streamlining the process from request to payment confirmation. This trend echoes broader moves in the payments industry, such as Visa's integration of stablecoin payouts for global business transfers, as covered in EgonCoin's analysis of Visa's stablecoin expansion.
According to MoonPay, PayBox currently supports transactions across major blockchains with compatibility for both crypto wallets and payment cards. The company has not disclosed user numbers or transaction volumes for PayBox, but its integration with multiple networks and payment standards positions it to serve a broad segment of crypto users seeking AI-driven payment automation. As of June 2024, Solana and Ethereum remain among the most active networks for on-chain payments, with Solana averaging over 20 million daily transactions and Ethereum processing more than 1 million daily transactions, based on data from public blockchain explorers.
Non-custodial payment solutions like PayBox highlight the trade-offs between automation and asset control in crypto. While AI can streamline the user experience, the requirement for explicit user authorization-especially through Passkey or similar authentication-remains a critical safeguard. As more payment products adopt standards like x402 and expand cross-chain support, the practical boundaries between AI-driven convenience and user-controlled security will continue to shape the evolution of digital payments in the crypto sector.
