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:

json

{
  "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:

code

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

Post-Create Notification

After creating a PR:

code

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