MoonPay launched PayBox on July 29, 2026, and the pitch is simple. Every Claude and ChatGPT user can now trade on Solana by having a conversation. PayBox is a payment vault and non-custodial wallet built for AI agents. It connects to Claude and ChatGPT through custom connectors, so users skip code and app installs. The flow follows three words: prompt, approve, pay. Below, we break down how it works and why it matters.
every Claude and ChatGPT user now has the power to trade anything on @solana by having a conversation
— MoonPay 🟣 (@moonpay) July 29, 2026
welcome to PayBox, the payment vault and non-custodial wallet that lets AI Agents securely transact across the open internet
prompt, approve, pay: https://t.co/isCEzCNoC6 pic.twitter.com/H4bnenMnEn
What PayBox actually does
PayBox gives an AI assistant the ability to move money on your behalf. However, the user keeps sole control of the funds. You describe an intention in plain language, such as “Swap $100 PYUSD to SOL.” Then the agent prepares the transaction, and you approve it with a passkey. Only after that tap do funds move from your own wallet or card. As a result, the assistant can act without ever holding your keys. MoonPay says the first integrations already handle restaurant reservations, travel bookings, and shopping at major online retailers.
we just became the first people to ever buy $PENGU using Claude
— MoonPay 🟣 (@moonpay) July 29, 2026
joining the @pudgypenguins huddle is easy with PayBox
we'll send all of the tokens to one person who likes this post https://t.co/dNJ4H7rJ8Y pic.twitter.com/Oz63bqeeIk
Solana leads a multi-chain launch
Solana sits at the center of the launch messaging, and for good reason. The chain’s speed and low fees suit fast, small, agent-driven payments. Additionally, PayBox supports Ethereum, Base, Arbitrum, Polygon, Hyperliquid, Tempo, and Robinhood Chain at launch. This spread lets agents route swaps and payments across eight networks under one approval system. Consequently, a user can trade tokens on Solana and pay a merchant on Base within the same connector. MoonPay plans to add more AI platforms and deeper DeFi features over time.
The x402 protocol under the hood
PayBox runs on x402, an open payment standard now hosted by the Linux Foundation. The protocol revives the long-dormant HTTP 402 “Payment Required” status code. In practice, a server quotes a price, and a client pays in stablecoins without an account or API key. This design makes machine-to-machine payments feel as routine as a web request. Notably, x402 usage has grown fast, with roughly 75 million transactions and about $24 million in volume over a recent 30-day window. By choosing x402, MoonPay bets on open rails instead of a closed payments garden.
Security: nobody signs alone
The security model is the core of MoonPay’s argument, and it centers on custody. PayBox uses multi-party computation to split wallet keys across hardware-isolated enclaves. Therefore, neither the AI agent nor MoonPay can sign a transaction alone. A compromised device cannot hand an attacker enough key material to move funds. The key technology comes from Sodot, which MoonPay acquired in April 2026. Sodot’s infrastructure has secured more than $50 billion in transactions across over 10 million wallets. Furthermore, passkey approvals scope to a single action and expire after use, which blocks replay attacks. Trail of Bits and NCC Group audited the cryptography, and the product meets PCI DSS standards.
Guardrails keep users in control
PayBox ships with permission controls that limit what an agent can spend. Users choose between two policy modes at setup. “Always Ask” requires a fresh passkey approval for every transaction. “Autonomous” lets the agent operate within a preset spending limit instead. However, changing that limit still demands passkey re-approval, and access can be revoked anytime. Card purchases add another layer through Visa’s agentic commerce framework, which avoids storing raw card numbers. Instead, agents can use one-time virtual cards scoped to a specific merchant and amount.
Why this launch matters
PayBox signals that agentic payments are moving from concept to shipping product. MoonPay is not just adding another wallet to the market. Instead, it bundles identity, wallet access, payment authorization, and agent execution into one consumer layer. CEO Ivan Soto-Wright framed the shift plainly: “The card hid the cash. The phone hid the card. This is the era where money disappears into conversation.” Meanwhile, MoonPay Labs chief engineer Neeraj Prasad drew the contrast with big platforms. He said rivals build agentic payments inside their own walls, while PayBox uses open rails to reach everything from a dinner reservation to a DeFi protocol. For a company serving 1,700-plus enterprise clients across 180 countries, that open-rails bet carries real weight.
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