3 articles tagged
On 14 July 2026 the Linux Foundation launched the x402 Foundation with 40 members, from AWS to Visa. We compare x402 to Google's AP2 and OpenAI's ACP, and give an adopt-now-versus-wait call by use case.
OpenAI and Stripe's ACP and Google's UCP now overlap enough that one checkout core plus two thin adapters is the sane build. The March 2026 pullback changes which adapter you ship first.
OpenAI shut Instant Checkout in March 2026, six months after launch, with about a dozen merchants live. Google's UCP kept expanding. Here is how UCP, ACP and AP2 actually stack up, and what to build first.
