Instant Checkout launched in ChatGPT with Etsy sellers; Agentic Commerce Protocol open-sourced with Stripe

OpenAI launched Instant Checkout, letting U.S. Free, Plus and Pro users buy from U.S. Etsy sellers inside ChatGPT, with Shopify merchants such as Glossier, SKIMS, Spanx and Vuori announced as coming soon. The underlying Agentic Commerce Protocol (ACP), co-developed with Stripe, was open-sourced.

• Single-item purchases only at launch; orders, payment and fulfillment ran through the merchant's existing systems.
• Merchants paid a transaction fee on completed purchases; shoppers paid nothing extra.
• OpenAI said product results were ranked only by relevance, not by sponsorship or Instant Checkout enablement.
• Merchants could apply at chatgpt.com/merchants; Etsy and Shopify sellers were eligible without applying.