The Pulse

Sierra releases Poppy 1.0, with Shopify and Meta support

Version 1.0 of the Personal Agent Protocol is available to companies and enabled for every Shopify merchant. Meta's Muse checks for the protocol on sites it visits, while several design partners are putting it to use.

AI.info Team · · fact-checked · against 2 sources ↓ · Published 13 Nov 2026

Personal Agent Protocol 1.0 is now available to companies, with Shopify enabling it for every merchant and Meta's Muse checking for it on every site the agent visits. Sierra said the protocol, known as Poppy, lets personal agents interact with businesses through their websites, APIs and business agents.

The release follows five weeks of testing drafts with design partners. Sierra said 60 more companies are joining that group, bringing it to more than 100, and identified Mercury, Synchrony and Turkish Airlines among partners now going live.

How the protocol works

The protocol defines how personal agents connect with companies that implement it. It is largely built on existing standards including MCP, OpenAPI and Universal Commerce Protocol (UCP), with OAuth used for authentication. Customers can control what their agents can do and manage access over time.

The version 1.0 release makes it easier for companies to adopt the protocol in stages, refines its use of existing standards and expands the guidance and feedback a business can exchange with a personal agent. It also introduces extensions that let industries build on the core protocol without changing it.

Companies can implement Poppy on their own to serve customers using Muse. An implementation kit includes setup guidance and a validator for checking the work.

In its earlier draft, Sierra described a discovery process in which a company publishes a file at a standard website address to tell agents how to interact with it, how customers can sign in and what an agent can do. A session can begin with a guest, while tasks requiring an account can involve the customer signing in through OAuth.

Shopify's commerce connection

Every Shopify store automatically publishes a Poppy file, so merchants do not need to implement it separately. Each store also supports UCP by default.

The two protocols have different roles: UCP covers shopping tasks such as finding products, filling a cart and checking out, while Poppy handles an agent's initial identification and discovery of what it is allowed to do. Shopify co-authored a commerce extension that connects them.

Under that extension, an agent can shop as a guest or sign in with a customer's account, and must ask the customer before taking certain actions. The extension also connects to UCP Ask, allowing a shopper's agent to communicate with a store's agent.

Banking, travel and financing

Mercury customers using its business and personal banking services can ask a personal agent to check balances, review recent transactions, categorize spending or keep budgets and receipts current. A customer can also ask an agent to initiate a payment or transfer; the request goes through the account's approval policy before money is sent. Mercury is not a bank, and banking services are provided through its FDIC-insured partner banks.

At Turkish Airlines, agents can check fares, flight status and stopovers, and retrieve a booking using a reference number and surname. Miles&Smiles members can have an agent find business-class upgrades, which customers approve before paying. The airline is working on letting members complete a purchase without leaving the conversation.

Synchrony is exploring how an agent could consider affordability, offers and financing products while helping a customer find a product. Sierra said the work could eventually create new ways to bring Synchrony capabilities into shopping across its network of more than 500,000 merchant locations.