Sierra publishes draft Personal Agent Protocol 'Poppy' with 35 more partners
After first announcing the Personal Agent Protocol with Meta, Genesys, Instinct, NiCE, Rocket, Shopify, Stripe and Walmart, Sierra has now published a draft of the protocol, codenamed Poppy, along with 35 additional design partners including OpenAI, Mastercard, Visa, Bank of America, Target, Notion and Cloudflare. The draft defines five building blocks — discovery, sessions, sign-in, one session across every channel, and getting the job done — and is built on existing standards such as OAuth, JSON Web Tokens, HTTPS, OpenAPI and MCP, so companies can connect once rather than building a separate link for each personal agent. Sierra also says that at Sierra Summit, Rocket VP of Product Alex McGillis demonstrated the protocol live using Meta's personal agent Muse to complete a mortgage pre-approval with Rocket's own agent, a demo the company describes itself.
If widely adopted, Poppy could give personal agents a common way to identify themselves and act under user-granted permissions, replacing per-site workarounds.