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Sierra and Meta back Personal Agent Protocol for agent-to-business sign-in
Bret Taylor's Sierra announced the Personal Agent Protocol, an open standard letting assistants like Muse and Instinct interact with businesses via OAuth, with Meta, Stripe, Shopify and Walmart among backers.
JC Bahr-de Stefano
@jbahrdestefanoArchived 27 days agoOriginally posted 2026.10.07
JC Bahr-de Stefano @jbahrdestefanoOriginally posted 2026.10.07
Another big update in agent land @btaylor + @SierraPlatform announced Personal Agent Protocol, an open standard for how personal agents (@muse, @instinct etc) talk to businesses backed by @Meta, @stripe, @Shopify, @Walmart + more basically sign in w/ google but for agents --> OAuth session, user picks read vs write access, brand decides what the agent can touch payments extension is next on the roadmap so agents can check out w/o ever seeing your card # KYA materializing into a category 👀
x.com/jbahrdestefano/status/2107549245565731110Archived 2026.10.07 10:28