Slack Code: Multiplayer Coding with AI Agents Inside Slack Channels

Melvin Vivas · X video post · 2026-08-20 · 2:10 · 573 views · Open on X

Topics: AI Dev Tools & Productivity, AI Agents, Tool Use & MCP, Industry Trends & Job Market · Level: beginner

Summary

Melvin Vivas reshares Slack's launch demo of Slack Code, which lets you tag a coding agent such as Claude in a Slack channel. Slack then opens a dedicated code channel where the team and the agent build together. The demo walks through the workflow: the right teammates and context are pulled in, code diffs are reviewed and live HTML previews are shown in Slack, the agent opens a PR, and the channel is archived at the end. Melvin's own comment asks whether agents will replace co-workers. The video is mostly a product announcement, but it shows where team-based agentic coding is heading.

Key points

• Slack Code adds 'code channels', spaces built for teams and AI agents to work on code together inside Slack.
• You tag a coding agent (the demo uses Claude) in a normal channel, and Slack spins up a dedicated code channel for that task.
• The code channel brings in the right teammates and the context from earlier conversations, so the agent can start working right away.
• It's pitched as multiplayer: the whole team steers one agent on one task, instead of one developer working with one agent on their own.
• Developers review code diffs in Slack, and HTML artifacts give live previews without copy-pasting or refreshing.
• At the end, the agent opens a PR, posts a summary back to the main channel, and archives the code channel.
• Launch partners for agents: Anthropic, GitHub, Cognition and Vercel. It was announced at Dreamforce 2026 (#DF26).
• Melvin's point: agents have 'gone full circle', since they now sit in chat channels like co-workers.

Resources mentioned

• Slack Code · tool · salesforce.com · free
  A Slack feature that creates dedicated code channels where teams and AI coding agents build, review diffs and open PRs together.
• Slack · tool · slack.com · free · recommended by both Bashiri Smith & Melvin Vivas
  Team chat app where the user-feedback channel lives and where the agent replies to close the loop.
  Also in: Dots Demo: A Voice AI Agent Handling Travel Booking and Feedback Triage (Melvin Vivas on X · notes), Grok Team Bots: Shared AI Teammates in Slack and Grok (Melvin Vivas on X · notes), ChatGPT Voice Update: Plugins, Model Switching and ChatGPT Work (Melvin Vivas on X · notes), Devin Gets a Mac VM: AI Agent Builds and Ships iOS Apps (Melvin Vivas on X · notes) and 4 more
• Claude Opus 5.5 · tool · claude.ai · paid · open in a browser to verify · recommended by both Bashiri Smith & Melvin Vivas
  Anthropic's AI assistant, used throughout the guide to tailor resumes, add live roles to the tracker, match connections to target companies and find hiring managers.
  Also in: Generating a Repo Promo Video with a Claude Skill on Sonnet 5.5 vs Opus 5.5 (Melvin Vivas on X · notes), Comparing Coding Models on the Same Task in Devin iOS (Melvin Vivas on X · notes), Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), AI Engineer Roadmap Overview: From ML Foundations to RAG, Agents & Ops (Bashiri Smith on Facebook · notes) and 53 more
• GitHub · tool · github.com · free · recommended by both Bashiri Smith & Melvin Vivas
  Code hosting platform whose CI runs and pull requests the Cursor agents monitor and open.
  Also in: Grok Bot Can Now Hand Off Coding Tasks to Cursor (Melvin Vivas on X · notes), ChatGPT Can Commit Code Directly to Your GitHub Repo (Melvin Vivas on X · notes), Grok Bot Templates: Sharing, Publishing and Safely Installing Bots (Melvin Vivas on X · notes), 7 Habits to Become an AI Engineer: Books, Tooling, Research & Shipping (Bashiri Smith on Facebook · notes) and 9 more
• Devin · tool · x.com · paid
  A desktop app from the makers of the Devin coding agent for planning, delegating, reviewing and shipping work across fleets of local and cloud coding agents.
  Also in: Using the Devin iOS App to Build iOS Apps (Quick Demo) (Melvin Vivas on X · notes), Use Your ChatGPT Plus/Pro Subscription to Run Devin (Melvin Vivas on X · notes), OpenAI DevDay recap: Dots, GPT-6.1 Sol, Codex Cloud, Agents API (Melvin Vivas on X · notes), Devin price cuts and top score on FrontierCode 1.1 Extended (Melvin Vivas on X · notes) and 44 more
• Vercel · tool · x.com · free · recommended by both Bashiri Smith & Melvin Vivas
  Deploy web apps and frontends.
  Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes), 7 Habits to Become an AI Engineer: Books, Tooling, Research & Shipping (Bashiri Smith on Facebook · notes), Jev model added to the AIBackends API via Vercel AI Gateway (Melvin Vivas on X · notes), Open models now dominate token volume on Vercel AI Gateway (Melvin Vivas on X · notes) and 7 more
• Dreamforce 2026 · other · salesforce.com · paid
  Salesforce's annual conference, where Slack Code was shown.

Try this

• See Slack Code at Dreamforce 2026 (#DF26), as the quoted post suggests.