x402drop – Secure, pay-per-use file sharing with USDC on Base and Arbitrum

Summary: x402drop enables temporary file sharing by requiring payment in USDC on Base or Arbitrum networks. Users upload files up to 5 GB, pay once via an on-chain HTTP payment protocol, and receive auto-expiring download links without needing accounts or personal data.

What it does

It uses the x402 HTTP payment protocol to request USDC payments on-chain before granting access to uploaded files. Files can be stored for 1 hour to 90 days, with automatic deletion within 15 minutes after expiry. Recipients download files for free without wallets.

Who it's for

Users who want temporary, pay-per-use file sharing without subscriptions, accounts, or personal data, especially those familiar with on-chain payments.

Why it matters

x402drop removes friction from temporary file sharing by eliminating email, subscriptions, and API keys, relying solely on wallet-based USDC payments and expiring links.