SOURCE

Launching the x402 Foundation with Coinbase, and support for x402 transactions

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tagsagent-web, payments, primary-source, cloudflare, x402

2 min read

Launching the x402 Foundation (Cloudflare Blog)

Summary

Cloudflare and Coinbase are founding the x402 Foundation to standardize paying over HTTP. x402 is “a common language” for services to state payment requirements and for automated clients to satisfy them. The transaction flow: client requests a gated resource → server returns 402 with payment details → client resubmits with payment authorization → a payment facilitator verifies and settles → server delivers the resource with confirmation.

Cloudflare shipped x402 support in its Agents SDK and MCP servers (usable immediately, with a live playground), and proposed a deferred payment scheme that decouples cryptographic verification from settlement — enabling batching, subscriptions, or traditional payment methods rather than per-request blockchain transactions. That scheme is a proposal for a future x402 version, not finalized.

Key Claims

  • x402 Foundation is a joint Cloudflare + Coinbase standards effort.
  • Five-step 402 flow with a payment facilitator between client and server.
  • x402 already usable in Cloudflare’s Agents SDK and MCP servers.
  • Deferred-payment scheme (batch/subscription/fiat-friendly) is proposed, not shipped.

Connections

Contradictions

  • None. Confirms the podcast’s x402 description; adds that Coinbase co-founded the standard and that non-crypto settlement is still only a proposal.