Slack

Slack integration uses the Events API with webhooks for inbound messages and the Web API for sending.

Setup

1. Create a Slack App at api.slack.com/apps
2. Under OAuth & Permissions, add these bot token scopes:
   • chat:write — Send messages
   • files:read — Read file attachments
   • files:write — Upload files
3. Install the app to your workspace and copy the Bot User OAuth Token
4. Under Event Subscriptions, enable events and set the request URL to your KinBot webhook endpoint
5. Subscribe to bot events: message.channels, message.groups, message.im
6. Copy the Signing Secret from Basic Information
7. In KinBot, add a Slack channel with both the bot token and signing secret

Configuration

Field	Required	Description
Bot Token	✅	Bot User OAuth Token (stored encrypted)
Signing Secret	✅	For webhook request verification (stored encrypted)
Allowed Channel IDs	❌	Restrict to specific Slack channels

How It Works

• Inbound: Slack sends events to KinBot’s webhook endpoint. The adapter verifies the request signature (v0), handles URL verification challenges, and routes messages to the Kin.
• Outbound: Messages are sent via chat.postMessage. Long messages (>4,000 chars) are split automatically. Files are uploaded via files.upload.

Features

• Text messages with Slack mrkdwn formatting
• File attachments (inbound and outbound)
• Reply threading via thread_ts
• Request signature verification for security
• Automatic message chunking
• Channel and DM support

Requirements

• Your KinBot instance must be publicly reachable for Slack event webhooks
• Configure PUBLIC_URL in your KinBot environment