x402 / Mercury402 Integration Guide is a blockchain education product available on the Whop marketplace, created by dudman1 and launched in March 2026.

Learn the x402 protocol powering Coinbase and Cloudflare’s vision for internet-native payments. This free module covers: HTTP 402 status code history, how x402 payment flow works, EIP-712 signatures explained, facilitators and settlement on Base, and the full request/response cycle. Perfect for developers who want to understand x402 before committing to the full course.

x402 / Mercury402 Integration Guide has offers free access.

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