From 402 to x402

Make “pay before you read” simple for the web

This site explains HTTP 402 and x402 in plain language. Learn what they are, why they matter, and how to complete a one-off payment in minutes.

Watch x402 in 2 minutes Understand HTTP 402 Get ready to pay (USDC)

Why now?

402 stayed “reserved” in the HTTP spec for years. x402 turns it into a real pay-to-unlock experience with no accounts and per-article pricing.

You will learn

  • The difference between 402 and 401/403/404
  • The 4-step x402 workflow
  • How to finish a one-off payment with USDC

Ready to ship?

Just want the quick path? Follow the three-step checklist:

Prepare USDC now