Anthropic expands Claude's integration as a coworker in Slack

Anthropic just made Claude a lot more useful where millions of knowledge workers actually spend their day: inside Slack threads.

The company announced a deeper two-way integration between Claude and Slack, built on its Model Context Protocol (MCP) Apps framework. The upgrade lets Claude pull context from Slack messages, channels, and files, then draft content that users can review, edit, and post directly to their workspaces.

From basic bot to interactive collaborator

The company first launched a basic Claude app inside Slack around October 2025. It was functional but limited, essentially a way to ask Claude questions without leaving the platform. Then in December 2025, Anthropic rolled out a beta for Claude Code that let users delegate coding tasks directly from Slack threads.

This latest update changes the dynamic entirely. Claude can now search and retrieve content from Slack, generate drafts based on that context, and send messages back into channels. Users maintain full control over what gets posted, reviewing and editing Claude’s output before it goes live.