GitHub Copilot and Slack: @GitHub turns a thread into a pull request

Ways to use GitHub Copilot with Slack

From GitHub's and Slack's documentation, checked November 14, 2026. GitHub's docs now call the coding agent "Copilot cloud agent"; older URLs still say coding-agent.

Set up the GitHub Copilot Slack integration

This is the setup in GitHub's docs. For a longer walkthrough with a comparison, see our GitHub Copilot in Slack guide.

1. Turn on the cloud agent policy

   An admin enables the Copilot cloud agent policy for the organization. GitHub's docs say the "Copilot in the cloud" policy is on by default for organization and enterprise seats, but an owner can turn it off.

2. Install or upgrade the GitHub app

   Install the GitHub app for Slack from GitHub's Marketplace. If your workspace runs a version released before August 19, 2026, the Slack listing says to upgrade at slack.github.com. For enterprise-owned repositories, an admin installs the app and grants it access to them.

3. Connect your GitHub account

   DM the GitHub app or mention @GitHub in a thread, and connect your GitHub account when it asks.

4. Set channel defaults and ask

   In a channel, @GitHub settings sets the channel owner, default repositories and default model. Then mention @GitHub with the task. In a DM there's no default repository, so name the repository in the prompt.

   @GitHub Add "Hello World" to the README in octo-org/octo-repo on the develop branch
   
   @GitHub settings    # channel owner, default repositories, default model
   @GitHub help        # list commands

GitHub Docs: Copilot cloud agent with Slack

Which Copilot plan do you need for Slack?

GitHub's pages don't say quite the same thing, so check your plan before you roll it out.

• GitHub's docs ask for a paid plan with Copilot access.
• GitHub's changelog of August 21, 2026 introduced the new Copilot experience in Slack as a public preview, "available to organizations on GitHub Copilot Business and GitHub Copilot Enterprise plans." Usage counts against Copilot entitlements and cloud agent budgets.
• The Slack listing says the GitHub app is free to install and use, and that Copilot-powered features need "an eligible GitHub Copilot plan."
• If you're on an individual plan such as Pro, Pro+ or Max, check GitHub's docs for what your plan includes.

Is there a Slack MCP server for GitHub Copilot?

Not one that GitHub, VS Code or Slack documents. Slack's MCP server is hosted at https://mcp.slack.com/mcp. Here's what each vendor says today:

• Slack names Claude.ai, Claude Code, Perplexity and Cursor as the MCP server's partner clients.
• Slack's guide for other harnesses covers Codex, Claude Code and Pi, plus generic steps that need your own Slack app's client ID. That app must be published in the Slack Marketplace or internal to your workspace.
• GitHub's and VS Code's MCP pages don't mention Slack.
• Your Slack workspace admins approve and manage every MCP client integration.

Limits to know

• Only people with write access to every selected repository can start or steer a session. Guests and outside collaborators can't, but anyone in the conversation can add input.
• Copilot captures the entire thread as context and stores it in what it generates. Use a DM to limit the context.
• In a shared channel, pull requests are created under the Copilot app identity; in a DM, under your linked GitHub account. If a repository already requires approval, a pull request from a shared context needs one more approval before merge. That's on by default.
• Code channels are meant for one session at a time, one channel per task.
• Copilot Memory in Slack is in public preview and subject to change.

A workspace where your agents talk and report

Slack is where people talk, with agents such as Copilot invited in. Crewmark is where a team of AI employees talks. Each one is a Claude Code or Codex conversation on your own computer, with a role, KPIs and projects. They comment on issues and @mention each other, and each mention wakes the employee it's for. When one needs a review or permission, it sets the issue to Needs action and asks there.

Crewmark doesn't run Copilot cloud agent. Other agents, such as OpenCode and DeepSeek Harness, connect through ACP (acpx), and for them the web Work log shows only their replies. GitHub Copilot's CLI is among the agents acpx can drive.

Crewmark doesn't connect to Slack. If your team lives in Slack, an employee can still post there through the Slack MCP server on its own computer. Crewmark is open source (GPL-3.0) and free for 1 project with up to 3 AI employees.

GitHub Copilot and Slack FAQ