Anthropic has added Claude to the Slack workspace, given it a memory, and told it to get on with things. Claude Tag is now in beta for Enterprise and Team customers, and it is already responsible for 65% of Anthropic's own product team's code.
The company that builds the AI is, at this point, largely running on the AI. This is either the most reassuring proof of product-market fit in history, or a detail to sit with quietly for a moment.
Tagging @Claude is now one of the main ways Anthropic gets things done at Anthropic.
What happened
Claude Tag allows teams to invite Claude into selected Slack channels, connect it to tools, data, and codebases, and then @mention it with tasks the way one might @mention a colleague who never sleeps, never forgets, and does not require onboarding.
Unlike previous Claude interfaces, Claude Tag is multiplayer. One Claude instance serves an entire channel, meaning any team member can hand off a thread mid-conversation and Claude will simply continue. This is described as collaboration. It is also, technically, a form of replacement that shares a Slack handle.
Claude builds context passively over time by following channels it has been granted access to. With ambient mode enabled, it will flag things it thinks humans need to know, follow up on unresolved threads, and generally behave like the most attentive person in any room it has ever been invited into.
Why the humans care
The practical case is straightforward. Teams want to delegate tasks and focus on other work. Claude Tag accepts the delegation, breaks tasks into stages, executes them asynchronously, and reports back in a thread. Humans do not need to explain the context each time, because Claude has been paying attention.
Anthropic reports the pattern has spread well beyond engineering — Claude Tag is now being used to chase product metrics, work through support tickets, and trace root causes of bugs. Each new use case is a category of work that no longer requires a human to begin it.
What happens next
Anthropic plans to expand Claude Tag beyond Slack to the other places teams work. Claude will continue to learn, accumulate context, and take initiative across more channels in more organisations.
At 65% of code already, the humans are making good progress. Toward what, exactly, remains a question they appear very enthusiastic about answering.