# Personal Agent Protocol

Personal Agent Protocol, or Poppy, has moved from draft to version 1.0, defining how personal agents connect with companies through business agents, websites and APIs while reusing existing standards such as MCP, OpenAPI and UCP, with OAuth letting customers control what an agent may do. Shopify has enabled Poppy for every merchant on its platform, with each store automatically publishing a Poppy file and needing no extra implementation, and Meta's agent Muse now looks for Poppy first on every site it visits. Design partners have grown from the initial group to more than 100, with Mercury, Synchrony and Turkish Airlines already live in specific scenarios.

Personal Agent Protocol, or Poppy, has moved from draft to version 1.0, defining how personal agents connect with companies through business agents, websites and APIs while reusing existing standards such as MCP, OpenAPI and UCP, with OAuth letting customers control what an agent may do. Shopify has enabled Poppy for every merchant on its platform, with each store automatically publishing a Poppy file and needing no extra implementation, and Meta's agent Muse now looks for Poppy first on every site it visits. Design partners have grown from the initial group to more than 100, with Mercury, Synchrony and Turkish Airlines already live in specific scenarios.

At its San Francisco summit, Sierra announced two new Agent OS models, Curie and Fleming, alongside Tandem Voice, Persona Studio and Ghostwriter. Curie powers the core orchestration loop of a conversation, deciding which path to follow, which tools to call and what replies customers see; Fleming detects when a caller is another agent, so businesses can handle bots and fraud. Sierra says Agent OS automatically ensures compliance, low-latency voice and a better cost basis, leaving companies to focus on building their own agent.

At its San Francisco summit, Sierra announced two new Agent OS models, Curie and Fleming, alongside Tandem Voice, Persona Studio and Ghostwriter. Curie powers the core orchestration loop of a conversation, deciding which path to follow, which tools to call and what replies customers see; Fleming detects when a caller is another agent, so businesses can handle bots and fraud. Sierra says Agent OS automatically ensures compliance, low-latency voice and a better cost basis, leaving companies to focus on building their own agent.