Meta, Walmart, Stripe, and other companies published the Personal Agent Protocol, a specification designed to standardize and secure interactions between AI agents and businesses, CNBC reported on October 61.
The protocol arrives alongside Meta's launch of Muse, a personal agent that CNBC described as quickly becoming a viral sensation. Details on Muse's technical architecture and the full list of companies backing the Personal Agent Protocol were not disclosed in the available reporting.
The Personal Agent Protocol addresses a practical bottleneck: as companies deploy AI agents that act on behalf of users, each business-agent pair currently negotiates its own authentication, data-sharing, and transaction rules. A shared protocol would let any compliant agent interact with any compliant merchant endpoint without bespoke integration, according to the CNBC report.
The coalition's composition is notable. Meta brings a consumer-facing agent in Muse, Walmart brings one of the largest retail surfaces in the world, and Stripe brings payments infrastructure, according to the report. ANALYSIS Together, the three anchor the core loop of an agent-mediated purchase: the user's agent discovers a product, authenticates with the merchant, and executes payment.
The protocol's publication comes amid rising investment in the security layer surrounding autonomous agents. Hadrian, an offensive-security startup, recently raised $40 million, and Paris-based Fleuret AI closed a pre-seed round, both focused on AI-adjacent security challenges[3]. ◆ A standardized agent protocol could reduce the attack surface that such security firms are racing to defend, by replacing ad hoc integrations with auditable, uniform handshake procedures.
CNBC's Kate Rooney reported the story; further technical specifications of the Personal Agent Protocol and the identities of additional participating companies were not detailed in the report.