Sierra Unveils Poppy Agent Identity Protocol with OpenAI, Visa, Mastercard Among 35 Partners
sujingshen · x · 2026-10-11
Sierra has released a draft of its Personal Agent Protocol (Poppy), letting personal AI agents identify themselves to merchants via OAuth authorization, with 35 design partners including OpenAI, Mastercard, Visa, PayPal, and Target.
Key industry implications:
- As personal agents proliferate, brands' storefronts and ad funnels must distinguish human clicks from agent activity
- Some traffic may become agents autonomously comparison shopping, and no one yet knows how to measure conversion or price such traffic
The protocol signals an imminent shift in advertising and commerce infrastructure built for AI agents.
Related event: Sierra and Meta Unveil Poppy Personal Agent Protocol Draft(4 posts)→
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