Slack Bot

Posts messages to Slack using either webhooks or the full Bot API, with support for Block Kit formatting so you can send actual structured content instead of plain text. The webhook path is dead simple for one-off announcements, while the bot token route gives you threading, channel listings, message updates, and file uploads. Includes examples for marketing reports, metrics dashboards, and threaded conversations. The setup instructions are thorough enough that you won't end up guessing which OAuth scopes you need. Good for anything from automated deployment notifications to formatted weekly digests where presentation actually matters.

skills.sh installs: 435
GitHub stars: 736
last updated: Aug 21, 2026

View on GitHub

Install

$ npx -y skills add openclaudia/openclaudia-skills --skill slack-bot --agent claude-code

Installs into .claude/skills of the current project.

Files

Slack Bot

Send messages and rich content to Slack channels using Incoming Webhooks or the Slack Web API. Build formatted announcements, marketing reports, metrics dashboards, and community updates with Block Kit.

Prerequisites

Requires either SLACK_WEBHOOK_URL or SLACK_BOT_TOKEN set in .env, .env.local, or ~/.claude/.env.global.

source ~/.claude/.env.global 2>/dev/null
source .env 2>/dev/null
source .env.local 2>/dev/null

if [ -n "$SLACK_WEBHOOK_URL" ]; then
  echo "SLACK_WEBHOOK_URL is set. Webhook mode available."
elif [ -n "$SLACK_BOT_TOKEN" ]; then
  echo "SLACK_BOT_TOKEN is set. Web API mode available."
else
  echo "Neither SLACK_WEBHOOK_URL nor SLACK_BOT_TOKEN is set."
  echo "See the Setup Guide below to configure Slack credentials."
fi

If neither variable is set, instruct the user to follow the Setup Guide section below.