Anthropic Launches Claude Duet, an AI Agent That Works in the Background and Asks Before It Acts

What is Claude Duet?

Anthropic has opened a research preview of Claude Duet, a new app that turns its Claude assistant into a proactive agent. The tool watches for what needs a user's attention, completes tasks on request and keeps working when the user steps away. It also checks in before acting on anyone's behalf.

The company built the app for professionals and small business owners who have more on their plates than they can track. Claude Duet is available as a standalone app on iOS and Android and on claude.ai. During the preview it is included in Pro and Max plans and draws on the same usage limits as the rest of Claude. Anthropic is starting with Pro and Max users in the United States, and people can join a waitlist to get access.

Each morning, the app sends a short brief on the most important items across a user's connected apps. Through the day, it keeps tabs on those apps and sends a message only when something needs attention. Users can hand it everything from scheduling meetings to building dashboards that pull from dozens of tools, creating financial or sales forecasts, prototyping and building web apps.

Claude Duet runs on its own virtual machine with its own browser, so a user's laptop or phone does not need to stay on. A user describes a task in a short message, and the app decides which apps to use and what steps to take. The user gets a notification when the work is finished or needs review. The app checks connected accounts every few hours. Anthropic said constant checking would burn through a plan's usage limits much faster.

How does Claude Duet ask before it acts?

The app is built to ask first. Claude Duet can read and draft on its own. Before it sends a message, makes a payment, signs a document or deletes anything, it shows the user exactly what it plans to do and waits for approval. Some actions are off-limits even with approval, including trading securities and moving money between accounts. Users can disconnect any app the agent has access to.

Anthropic said the agent's login credentials are handled so it never directly sees passwords or sign-in tokens. Its actions are approved by the same automatic classifier that guards Claude and Claude Code against steps a user did not request. A new classifier and safety prompt check each message for sensitive information. They are designed to reject requests to share the strictest category of data, including credit card numbers and government identification. Health information and personal finances pass through only when a user explicitly tells the app to send them. Anthropic said red teams and an outside firm penetration tested the product, and it is covered by the company's public bug bounty program. The company said it will publish more detail about the safety design in the coming days.

Which apps can Claude Duet connect to?

Claude Duet can connect to more than 6,000 connectors and plugins in the Claude Marketplace. Examples include finding missed Gmail and Slack messages and drafting replies, checking QuickBooks or Stripe for unpaid invoices, preparing payroll in Gusto, and drafting a job posting that goes to LinkedIn once the user edits and approves it. It can also send agreements for signature through Docusign, draft follow-up emails using HubSpot deal history, turn a product launch into a social campaign in Canva and manage a Shopify store. A visual storefront editor is coming soon.

For purchases, the app uses Link, Stripe's digital wallet. It confirms the item with the user, Link asks for approval, and the payment goes through a virtual card so the real card number is not shared. It can also check out at online stores using Shop Pay. Anthropic said that with a user's permission, it will soon be able to sign in to sites using logins saved in 1Password.

Anthropic staff have been testing the app on their own work. Boris Cherny, who leads the Claude Code team, talks through his to-do list with Claude Duet on walks. Chelsea Larsson, who leads model and product behavior design, hands it her list before she leaves to be with her kids, and it saves the results for an evening report. The team that builds Claude Duet uses it too, to schedule user interviews, work on prototypes and ship code.

The company acknowledged the app's limits. It is an early version that may misread a thread or misjudge what is urgent. Personal errands, such as booking tickets, are not as strong as work tasks, and the app cannot yet show users its browser. For now it lives in its own app, separate from the main Claude app. Background checks count toward usage limits, and larger tasks such as building a financial model or a slide deck require more model turns and background work.

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