What is MoonPay?
MoonPay is a prominent crypto payment platform established in 2019. It facilitates the process for individuals to buy, sell, and swap cryptocurrencies using various payment methods, including debit and credit cards, Apple Pay, PayPal, and bank transfers. Its integration with numerous wallets and applications spans over 160 countries, making it a versatile tool for crypto transactions.

To date, MoonPay has successfully raised $1.24 billion in funding. Notable investment milestones include a $555 million Series A round in November 2021, spearheaded by Tiger Global and Coatue Management, with additional backing from Paradigm, Thrive Capital, and NEA.
What is PayBox?
PayBox, launched on July 29, 2026, is MoonPay’s innovative product designed for seamless transactions. This non-custodial payment vault interfaces directly with AI assistants such as Claude and ChatGPT, allowing users to execute real transactions effortlessly. Users can perform actions such as swapping cryptocurrencies, bridging assets, and making stablecoin transfers through the x402 agent payment standard.
The security of Wallet keys is enhanced through multi-party computation, ensuring that transactions cannot proceed without user approval via a passkey. At launch, PayBox supports Solana and seven EVM-compatible chains, including Ethereum, Base, Arbitrum, and Polygon.
How to Participate in the MoonPay PayBox USDC Drop
Step 1: Create Your PayBox Account
Visit the PayBox website and register using your email address. No MoonPay account is necessary. Choose either Claude or ChatGPT as your assistant and copy the connector URL: https://api.paybox.sh/mcp.
Step 2: Add the PayBox Connector to Your AI Assistant
The installation process differs based on the platform:
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ChatGPT: Navigate to the ChatGPT website (Note: Developer mode is not available in the mobile app), access Settings, activate Developer mode under Security, go to Plugins, select New Plugin, name it PayBox, enter the server URL, and set Authentication to OAuth.
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Claude: Click on “Open Claude Settings” from the PayBox site, where the connector should be auto-filled; select “Add.” If it does not appear, go to Settings, then Connectors, and manually add the connector titled PayBox with the provided URL.
Step 3: Authorize PayBox With a Passkey
After saving the connector, select Connect, and complete the OAuth authorization process. Follow the prompts to register a passkey, which enables PayBox to generate a Solana wallet and an EVM wallet on your behalf.
Step 4: Test the Connection in Chat
Initiate a chat and ask your assistant “@PayBox check my balance.” Follow the necessary prompts to complete the wallet setup and ensure your assistant can access your vault.
Step 5: Verify Everything on the Dashboard
Access the PayBox Dashboard, logging in with your passkey. Confirm that your AI platform appears under Agents, and both wallets are displayed under Credentials. If you notice any discrepancies, reconnect before the faucet activation.
Step 6: Connect X and Claim the USDC Drop
Once the faucet reopens, navigate to the dashboard and select “Claim your USDC drop” to connect X and authorize your account. You will then see your allocated USDC deposited into your PayBox Solana wallet. MoonPay has confirmed that users who missed the initial round will have another opportunity to participate.
Tips for Maximizing the USDC Drop
Prepare before the faucet reopens: The first round was claimed quickly, so ensure your connector, passkey, and wallets are set up to increase your chances during the next claim window.
Enable notifications for MoonPay’s X account: The exact time of the reactivation is not disclosed, and updates will be provided there first.
Always use the official paybox.sh domain: Beware of phishing attempts, especially during promotional offers. Do not share your passkey or seed phrase outside of secure platforms.
Frequently Asked Questions
Conclusion
The MoonPay PayBox drop offers a straightforward opportunity for participants to earn rewards. The process involves just signing up, linking your account, and potentially receiving USDC rewards that can reach several hundred dollars, according to feedback from the first round.
With the faucet set to reopen on July 30, now is an ideal time to prepare your account. The USDC earned will be credited to your PayBox Solana wallet, where you can easily send or exchange it using your preferred assistant.
If you are interested in additional projects that have not launched a token yet and may offer future governance airdrops for early users, make sure to check our curated list of potential retroactive airdrops to capitalize on the next DeFi opportunity!
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