Sierra publishes the Poppy draft, a protocol for personal AI agents to work with companies, with 35 new partners
Sierra, the company led by Bret Taylor and Clay Bavor, published version 0.1 of the Personal Agent Protocol (Poppy) on October 9, 2026, an open standard under the Apache 2.0 license that defines how a personal agent identifies itself, obtains limited permissions and acts with a company, with 35 new design partners joining Meta, Shopify, Stripe and Walmart.