🎨 PromptBoard

The Shared Whiteboard for AI Agents via MCP.

Paste screenshots, highlight specific details, and share visual context directly via MCP. Stop saving images to files. Just copy, paste, mark, and ask.

Demo:

https://github.com/user-attachments/assets/3a07ca9d-d989-4d6c-aef1-4eebbd6d0cca

🚀 Quick Start

Standard Configuration

Add to your MCP client configuration:

{
  "mcpServers": {
    "promptboard": {
      "command": "npx",
      "args": ["-y", "promptboard"]
    }
  }
}

Config Location:

• Windows: %APPDATA%\Claude\claude_desktop_config.json

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Linux: ~/.config/Claude/claude_desktop_config.json

Configuration:

{
  "mcpServers": {
    "promptboard": {
      "command": "npx",
      "args": ["-y", "promptboard"]
    }
  }
}

Restart Claude Desktop and test:

• "Open the whiteboard"

• "What's on the whiteboard?"

claude mcp add promptboard "npx -y promptboard"

Custom Commands (Optional):

npx promptboard init claude-code

This creates .claude/commands/:

• /whiteboard - Opens the visual whiteboard

• /check-board [message] - Analyzes whiteboard content

Example:

/check-board What does the red section mean?

Config Location: .gemini/settings.json in your project

Configuration:

{
  "mcpServers": {
    "promptboard": {
      "command": "npx",
      "args": ["-y", "promptboard"]
    }
  }
}

Custom Commands (Optional):

npx promptboard init gemini-cli

This creates .gemini/commands/:

• /whiteboard - Opens the visual whiteboard

• /check-board [message] - Analyzes whiteboard content

For detailed installation instructions, including manual setup and building from source, please refer to the MCP Setup Guide.

Related MCP server: Napkin

Features

• 🎨 Whiteboard Canvas - Draw, sketch, and annotate freely

• 📸 Screenshot Support - Paste images directly with Ctrl+V

• 🖊️ Drawing Tools - Pen, shapes, text, eraser

• ↩️ Undo/Redo - Full history management (Ctrl+Z, Ctrl+Shift+Z)

• 🌍 Multi-language - English, Korean, Japanese

• 🌓 Dark/Light Theme - Customizable appearance

• 🤖 AI Integration - MCP protocol for Claude Code, Gemini CLI

• 💾 Auto-save - Persistent state across sessions

Documentation

User Guides

• MCP Setup Guide - Installation and configuration

• MCP Architecture - Internal architecture details