Every Shopify store now speaks Poppy 1.0
Sierra released version 1.0 of Personal Agent Protocol, or Poppy, on the 13th of November 2026, the company said. Every Shopify store now publishes a Poppy file automatically.

Sierra releases Poppy for AI agentsSierra released version 1.0 of Personal Agent Protocol, or Poppy, on the 13th of November 2026, the company said. Every Shopify store now publishes a Poppy file automatically.
Poppy is a shared set of rules for personal AI agents. These are assistants that do tasks such as shopping or booking for one person.
What Poppy does
An agent uses Poppy to say who it is and learn what a company lets it do, Sierra said. Customers sign in and choose what the agent may do.
It builds on existing standards, including MCP, a common way for AI tools to connect to apps.
Shopify and Meta sign on
Shopify runs stores in more than 175 countries, Sierra said. Shopify helped write a shopping add-on that makes the agent ask the customer before some actions.
Poppy is now on for all users of Muse, Meta's AI agent. Muse looks for Poppy first on every site it visits.
Companies going live
Mercury lets agents check balances and start payments, which still pass the account's approval rules. Turkish Airlines lets agents check fares, flight status and bookings.
Below we break down the growth
Sierra said 60 new companies joined as design partners, bringing the total above 100. So more than 40 were already on board, by our arithmetic.


What is confirmed and what is not
Synchrony is still exploring how agents could offer its financing, Sierra said. Turkish Airlines is still working on full purchases inside the chat.
Key facts
Sierra released Poppy 1.0 on the 13th of November 2026.
Every Shopify store now publishes a Poppy file.
Meta's Muse looks for Poppy first on every site.
More than 100 companies are design partners.
Source: Sierra: Releasing Personal Agent Protocol 1.0 (Bret Taylor, Clay Bavor)