# Slack Notify

> Send Slack messages via incoming webhook. Use for notifications, alerts, and status updates to Slack channels.

- Skill: `winsorllc/slack-notify` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add winsorllc/slack-notify`
- Raw SKILL.md: https://api.skillmd.com/api/skills/winsorllc/slack-notify/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: winsorllc (https://skillmd.com/u/winsorllc)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/winsorllc/slack-notify

---


# Slack Notify Skill

Send messages to Slack channels using incoming webhooks.

## Setup

1. In Slack, go to Channel Settings → Apps → Add an App → Search "Incoming Webhooks"
2. Configure the webhook and copy the URL
3. Set as GitHub secret: `AGENT_LLM_SLACK_WEBHOOK_URL`

## Usage

```javascript
const { sendSlackMessage } = require('./index.js');

// Simple message
await sendSlackMessage('Hello from PopeBot!');

// Formatted message with blocks
await sendSlackMessage('Job Complete', {
  blocks: [
    {
      type: 'header',
      text: { type: 'plain_text', text: '🎉 Task Completed' }
    },
    {
      type: 'section',
      text: { type: 'mrkdwn', text: 'The job finished successfully in *5 minutes*.' }
    },
    {
      type: 'actions',
      elements: [
        {
          type: 'button',
          text: { type: 'plain_text', text: 'View Logs' },
          url: 'https://example.com/logs'
        }
      ]
    }
  ]
});

// Thread reply
await sendSlackMessage('Update on above', { thread_ts: '1234567890.123456' });
```

## Features

- Plain text and formatted messages (mrkdwn)
- Interactive blocks (buttons, selects, inputs)
- Thread replies
- User mentions (`<@USER_ID>`)
- Channel mentions (`#channel`)
- Attachments with colors
- Custom icons and usernames

## Rate Limits

Slack webhooks are rate limited. The skill includes automatic retry with exponential backoff.