Living definition
What is x402 Payment Protocol?
AdTech & Marketing Technology Agentic Commerce & Payments
- As of
- 2026-10-01
- Revision
- 2026-10-06.1
- Method
- v1.4.0
Definition
The term, in context
AI-assisted draft · approved dataset
x402 Payment Protocol is the open protocol that uses the HTTP 402 response code to let a website or API require a small, machine-payable amount before serving a request, without a login or account-based billing relationship.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-10-01, verified readiness is 35 (claimed 55, reported 45, gap 20) — Critical evidence strength; current signals suggest Consider x402 for bounded payment integrations after validating the chosen SDK and facilitator.
The readiness fact belongs to the canonical Readiness Verdict for x402 Payment Protocol.
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06