Connect the Slack MCP Server for Team Notifications

Once you've wired up the Slack MCP server, Claude can send messages, post to channels, and thread replies without you ever leaving the terminal.

Install and configure it in your Claude Code settings:

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-slack"],
      "env": {
        "SLACK_BOT_TOKEN": "xoxb-your-token",
        "SLACK_TEAM_ID": "T0123456789"
      }
    }
  }
}

Once connected, you can ask Claude to compose and send context-aware notifications straight from your workflow:

claude "Summarise the last 10 git commits and post a deployment update to #releases"

Or wire it into a post-deploy hook so Claude automatically notifies the team after a successful push:

# .claude/hooks/post-tool-use.sh
if [[ "$TOOL" == "Bash" && "$OUTPUT" == *"deployed successfully"* ]]; then
  claude "Post a brief deploy success message to #deployments"
fi

Stop copy-pasting updates into Slack — let Claude handle the broadcast.