What is Slack?

Slack is a messaging platform used for team communication and collaboration, often integrated with AI agents and tools. The material tracks its use as a channel for alerts, automated workflows, and agent interactions, as well as its position as a competitive target for AI-native tools.

• Mar 2026 - Marchelle Mooney said she teaches people how to mute 55 Slack channels to manage notifications, and advised setting notifications off when not working.
• Apr 2026 - Jason Lemkin reported more daily check-ins on Slack with agents than humans.
• May 2026 - Cole Murray described Slack as a common place for alerts where an agent can be the first responder, and noted that PMs are prompting through Slack to create pull requests for quick bug fixes.
• Jun 2026 - Pedro Franceschi said a virtual employee can be on Slack, have an email, and be invited to meetings.
• Jun 2026 - Ryan Peterson described a tool as a direct Slack competitor built for the AI era.
• Jul 2026 - Greg Isenberg said he gets an agent to ping him on Slack whenever it completes a run.
• Jul 2026 - Nathaniel Whittemore said Anthropic reported that 65% of its product team code was produced by initiating Claude Code from Slack.
• Jul 2026 - Seema Amble noted a 300% increase in Slack agent usage, per a source she read.