x402 Stablecoin Payments

Some APIs and data providers are moving to per-request payments using USDC stablecoins instead of traditional API keys. The x402 protocol (developed by Coinbase and Cloudflare) standardizes this: a server responds with HTTP 402, the client signs a USDC payment, and retries with proof of payment. MeetLoyd agents handle this flow natively, enabling machine-to-machine micropayments governed by the same spending policies as your other payments.

This guide covers setup, agent tools, spending governance, and security considerations.