On 21 October 2026 Anthropic opened Claude Duet, a version of Claude that does not wait to be asked. It is the third always-on agent an Amazon seller has been offered in a month: Amazon added Workflows to Seller Assistant on 23 September, OpenAI launched ChatGPT dots on 29 September, and now Claude has one of its own.
All three promise the same thing: notice what needs you, and keep working while you are away. For an Amazon business, how clever the agent is matters less than what it is able to look at. This post covers what Duet is, what a proactive agent should check on an Amazon account every day, the three routes Duet has to your Amazon data, and the parts of your business it stays blind to unless something gives it the data. For the three agents side by side, see Claude Duet, ChatGPT dots and Amazon Seller Assistant compared.
Duet is a separate app, on iOS, Android and the web, built around Claude Opus 5.5. It runs on its own cloud computer, so it keeps going after you close the app, and it has its own cloud browser for sites that have no connector. You talk to it in a main thread and in topic channels that share one memory. It prepares a morning brief from your email and calendar, follows up on threads that went quiet, keeps a Tasks tab, and saves bigger outputs (research briefs, financial models, decks, dashboards) as files in a Make tab. Anthropic says it brings over the memory, skills and connected apps from your Claude account. Before anything sensitive goes out, before a payment and before a deletion, it lays out the step and holds until you agree. At launch it is a research preview for Pro and Max subscribers in the US only, through a waitlist, with invitations going out in batches. Team and Enterprise plans are on the roadmap but not covered yet. There is no extra charge, but background work counts against your plan's usage limits, so you reach them sooner.
An agent that runs on its own is only worth having if it looks at the right things before you do. On a typical Amazon account that means a short list of daily checks, each of which needs specific data:
A morning brief that covers these is the difference between an agent you read every day and one you switch off after a week.
Duet can open Seller Central and click through it like a person would. It works for a one-off look, but it is slow, it breaks when Amazon changes a screen, it sees only what a page shows today, and it cannot reach restricted buyer data. Signing an agent in with your own login also puts account health at risk. We covered the trade-offs in AI agents and computer use in Seller Central.
Amazon's free plugin is listed in Claude's connector directory, and connected apps are what Anthropic says Duet inherits. For a US third-party seller it covers sales, inventory and traffic in Seller Central, and it can draft listing fixes, price changes and FBA inbound plans for you to approve. Our guide to the Amazon Selling Partner plugin for Claude explains its setup and scope.
DataDoe is added to Claude as a custom connector, by pasting its server address under Customize → Connectors → Add. It gives Claude Seller Central, Vendor Central and Amazon Ads data in one schema, with history and your product costs. One thing is still open: Anthropic has confirmed that connected apps carry over to Duet, but has not said if custom connectors, the kind you add by pasting a URL, come with them. We are testing it from a US account and will update this post with the result. Until then, everything below describes the data, not a confirmed Duet setup. What is confirmed so far, and what is not, is kept current on our Claude Duet for Amazon page.
Give Duet only the free plugin and it has a clear view of one US Seller Central account as it stands today. Most of the questions that decide whether an Amazon business makes money sit outside that view:
None of this is a flaw in Duet. An agent can only report on data it can reach, and a single Seller Central login reaches one slice of the business.
DataDoe pulls Seller Central, Vendor Central and Amazon Ads through Amazon's official APIs and joins them by SKU and ASIN with the costs you upload, across all Amazon marketplaces and with history you can keep. Its 130+ documented tables cover orders, settlements, inventory, returns, campaigns, search terms and Vendor Central reporting. The same data is available over the API, as exports and in BigQuery.
For a proactive agent, the point is the questions it can now answer without you. Morning prompts that make sense once both are connected:
Amazon's plugin and DataDoe can sit side by side on one Claude account. Plenty of sellers will keep the plugin for quick listing fixes and use DataDoe for everything that needs Ads, Vendor Central, history or profit.
DataDoe can also write: listings, prices, orders and shipments, and Amazon Ads campaigns. Each kind of change, called an Action type, is disabled until you turn it on, the Amazon account itself needs read-and-write access, a change can be tried as a dry run first, and each Action is recorded in a log with what it sent.
Duet's own approvals are a headline feature: Anthropic says it waits before sending sensitive information, paying or deleting. Whether a write that goes through a connector, such as a price change through DataDoe, also waits for you has not been confirmed. Until it has, the safe setup for an agent that works while you sleep is read access only, or Actions limited to dry runs, and a look at the log each morning. Actions stay off until you enable them, most AI clients ask before a change, and every change is logged.
We will update this post as each one is answered. For the Claude setup itself, see how to connect Amazon to Claude.
Not at launch. The research preview is US only, for Claude Pro and Max subscribers, through a waitlist. Anthropic has not given a date for other countries.
No. It is included with Pro and Max, but its background work draws on the same usage limits as the rest of your Claude plan.
Not yet. Team and Enterprise are on Anthropic's list for later. In the meantime, teams can keep using Claude, Cowork or Claude Tag with DataDoe.
In Claude, DataDoe is added as a custom connector. Duet inherits whatever is connected in your Claude account, but nobody has confirmed yet that custom connectors are part of that. We will say so here once we have tested it.
Not if you are a single US seller who only needs Seller Central. You need a data layer once the agent should see ads, Vendor Central, profit per SKU, history, other marketplaces or several accounts.
DataDoe is not affiliated with or endorsed by Anthropic or Amazon. Details on Claude Duet come from Anthropic's announcement and press coverage on 21 October 2026, and may change during the research preview.
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