Slack Integration

Overview

Integrate Slack notifications into your Claude Code workflow using the Slack MCP server. Receive team notifications for PR lifecycle events, review completions, and CI status.

Configuration

Slack MCP Server Setup

Add to your MCP configuration:

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": ["-y", "@anthropic/mcp-slack"],
      "env": {
        "SLACK_BOT_TOKEN": "xoxb-your-bot-token",
        "SLACK_CHANNEL": "#dev-notifications"
      }
    }
  }
}

Required Bot Permissions

chat:write - Post messages
channels:read - List channels
reactions:write - Add reactions

PR Lifecycle Notifications

Event	Message	When
PR Created	"PR #123 opened: Title"	After `create-pr`
Review Complete	"PR #123 reviewed: APPROVED"	After `review-pr`
PR Merged	"PR #123 merged to main"	After merge
CI Failed	"CI failed on PR #123"	On check failure

Integration with CC 2.1.20

CC 2.1.20's /commit-push-pr flow can auto-post to Slack:

Commit changes
Push branch
Create PR
Post Slack notification with PR link

Usage Patterns

Post-Review Notification

After completing a PR review:

mcp__slack__post_message({
  channel: "#dev-reviews",
  text: "PR #123 reviewed: APPROVED - 0 blockers, 2 suggestions"
})

Post-Create Notification

After creating a PR:

mcp__slack__post_message({
  channel: "#dev-prs",
  text: "New PR: #123 - feat: Add user auth | 5 files, +200/-50"
})

Related Skills

review-pr - PR review with optional Slack notification
create-pr - PR creation with optional Slack notification
release-management - Release announcements

slack-integration