Slack-OpenHands Bot　

A Slack bot that integrates with OpenHands using Socket Mode (no domain required).

🇺🇸 English | 🇯🇵 日本語

Project Overview

🎯 Purpose

OpenHands is a powerful AI development assistant, but traditionally requires web UI interaction. This bot brings OpenHands functionality directly into Slack, where teams already collaborate daily.

💡 Problems It Solves

• Accessibility: Direct OpenHands access from Slack without opening web UI
• Team Collaboration: Project management through Slack's threading system
• Easy Setup: No domain configuration required with Socket Mode
• Context Continuity: Maintains conversation context for ongoing development

🚀 Use Cases

• Code review requests
• Bug fixing consultations
• New feature implementation support
• Documentation generation
• Team pair programming sessions

Features

• 🤖 Chat with OpenHands directly from Slack
• 🧵 Thread-based conversations (each thread = separate project)
• 💬 Direct message support
• 🔌 Socket Mode (no webhook/domain setup needed)
• ⚡ Real-time responses from OpenHands

Quick Setup

1. Prerequisites

• Node.js 18+ installed
• OpenHands running on http://localhost:3000
• Slack workspace with admin permissions

2. Create Slack App

1. Go to https://api.slack.com/apps
2. Click "Create New App" → "From scratch"
3. Name your app (e.g., "OpenHands Bot") and select workspace

3. Configure Bot Permissions

In your Slack app:

OAuth & Permissions → Bot Token Scopes:

• app_mentions:read
• chat:write
• im:read
• im:write
• commands

Socket Mode:

• Enable Socket Mode
• Create App-Level Token with scope: connections:write

4. Install Bot

npm install

5. Environment Setup

Create .env file:

# Get from "OAuth & Permissions" → Bot User OAuth Token
SLACK_BOT_TOKEN=xoxb-your-bot-token

# Get from "Basic Information" → Signing Secret
SLACK_SIGNING_SECRET=your-signing-secret

# Get from "Socket Mode" → App-Level Token
SLACK_APP_TOKEN=xapp-your-app-token

# OpenHands configuration
OPENHANDS_API_URL=http://localhost:3000
PORT=3001

6. Add Bot to Channels

In Slack, type /invite @your-bot-name in channels where you want to use it.

7. Start Bot

npm start

Usage

Mention the Bot

@openhands-bot Create a Python script that reads a CSV file

Continue in Thread

Once a conversation starts, you can continue in the same thread for the same project context.

Direct Messages

Send direct messages to the bot for private conversations.

Slash Commands

• /openhands-help - Show help
• /openhands-status - Check OpenHands connection
• /openhands-conversations - List active conversations
• /openhands-open - Get OpenHands WebUI link

How It Works

1. Thread Management: Each Slack thread maps to an OpenHands conversation
2. Real-time Sync: Socket connection streams OpenHands responses to Slack
3. Context Preservation: Conversations maintain context within threads
4. No Domain Required: Uses Slack's Socket Mode instead of webhooks

Configuration

OpenHands Settings

Default configuration in src/config.js:

• Model: lm_studio/devstral-small-2505
• Base URL: http://host.docker.internal:1234/v1/
• Agent: CodeActAgent

Environment Variables

Variable	Description	Required
SLACK_BOT_TOKEN	Bot User OAuth Token	✅
SLACK_SIGNING_SECRET	App Signing Secret	✅
SLACK_APP_TOKEN	App-Level Token for Socket Mode	✅
OPENHANDS_API_URL	OpenHands base URL	✅
OPENHANDS_MODEL	LLM model to use	❌
OPENHANDS_AGENT	Agent type	❌
PORT	Server port	❌

Troubleshooting

Bot not responding

1. Check OpenHands is running: /openhands-status
2. Verify bot is invited to channel
3. Check console logs for errors

Permission errors

1. Ensure all required OAuth scopes are added
2. Reinstall bot to workspace after scope changes

Socket connection issues

1. Verify SLACK_APP_TOKEN is correct
2. Ensure Socket Mode is enabled in Slack app settings

Development

# Development mode with auto-restart
npm run dev

# Test OpenHands connection
npm run test-connection

License

MIT License - feel free to modify and distribute!

Contributing

1. Fork the repository
2. Create your feature branch
3. Submit a pull request

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Made with ❤️ for the OpenHands community