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MonkePay

Gates API endpoints behind per-request USDC payments via x402 protocol for AI agents

The product is payment infrastructure that gates API endpoints behind per-request USDC payments using the x402 protocol on Base, allowing API owners to charge AI agents automatically via HTTP 402 handshake without custom payment code. It is for developers and engineering teams at businesses building APIs and agent-accessible services. It is delivered as an SDK middleware for Express, Hono, Fastify and Next.js with wallet-based settlement and a dashboard for tracking payments.

Key features

  • Gate any endpoint behind USDC payments
  • Middleware for Express, Hono, Fastify, Next.js
  • x402 protocol HTTP 402 handshake
  • USDC settlement on Base
  • Per-request billing with configurable price
  • Wallet-to-wallet settlement
  • Real-time dashboard and analytics
  • Filter payments by agent or endpoint
  • CSV export for taxes
  • 1% per-transaction fee model
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