Claude Duet proactive agent

Anthropic has opened a research preview of Claude Duet, a standalone app powered by Claude Opus 5.5 in which the agent monitors connected apps and surfaces attention items or completes tasks without waiting to be asked. The app is available to US Pro and Max subscribers via a waitlist at claude.com/product/claude. Duet monitors Slack, email, and calendars through over 6,000 connectors including invoicing and payroll tools, delivers a morning brief on important items, and can handle tasks ranging from simple admin work to building web apps. It checks connected accounts every few hours rather than continuously, because background checks draw on the same usage allowance as regular Claude chats. All irreversible or sensitive actions, including payments, messages, document signings, and deletions, require explicit user approval before execution; securities trading and inter-account money transfers are blocked entirely. Purchases require two separate approvals, with Duet confirming the item and Stripe's Link wallet approving the spend, after which Duet pays with a virtual card. Credential handling follows the Claude Managed Agents design, so Duet never directly sees passwords or sign-in tokens. A safety classifier blocks sharing of credit card numbers or government IDs, and sensitive health or financial data is transmitted only when the user explicitly instructs Duet to do so. Early testers report the app reduces context switching by alerting users only when relevant.