x402-poc.vercel.app is a lightweight proof-of-concept 'buy me a coffee' REST API that exposes address-specific endpoints for sending micro-donations to Ethereum addresses on the Base network. Each endpoint maps to a recipient address (e.g., /api/{address}/coffee), enabling quick integration of tipping/donation flows in apps, UIs, or demos. The service is Vercel-hosted, developer-friendly, and priced per call ($1.00).
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