Slack MCP Server (Ubie) vs WhatsApp MCP Server (lharries)

A side-by-side comparison of two Communication servers — tools, transport, auth, maintenance, and copy-paste config for each.

	Slack MCP Server (Ubie) Bot-token Slack MCP for posting, reading channels and searching messages Verified stdio (local) API key Stale TypeScript	WhatsApp MCP Server (lharries) Connect your personal WhatsApp: search, read and send messages and media locally Verified stdio (local) No auth Python
Category	Communication	Communication
Language	TypeScript	Python
Transport	stdio (local)	stdio (local)
Auth	API key	None
GitHub stars	110	5.7k
Last commit	9 months ago	28 days ago
Verified
Actively maintained
Install	`npx -y @ubie-oss/slack-mcp-server`	`git clone https://github.com/lharries/whatsapp-mcp && cd whatsapp-mcp/whatsapp-bridge && go run main.go`
Repo	Open	Open

Verdict

Pick Slack MCP Server (Ubie) if you prefer its approach (bot-token slack mcp for posting, reading channels and searching messages).

Pick WhatsApp MCP Server (lharries) if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Add Slack MCP Server (Ubie)

Install / run

npx -y @ubie-oss/slack-mcp-server

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "slack-mcp-server-ubie": {
      "command": "npx",
      "args": [
        "-y",
        "@ubie-oss/slack-mcp-server"
      ],
      "env": {
        "SLACK_BOT_TOKEN": "<your-slack-bot-token-xoxb>",
        "SLACK_USER_TOKEN": "<your-slack-user-token-xoxp>"
      }
    }
  }
}

Add WhatsApp MCP Server (lharries)

Install / run

git clone https://github.com/lharries/whatsapp-mcp && cd whatsapp-mcp/whatsapp-bridge && go run main.go

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "whatsapp-mcp-server-lharries": {
      "command": "uv",
      "args": [
        "--directory",
        "/absolute/path/to/whatsapp-mcp/whatsapp-mcp-server",
        "run",
        "main.py"
      ]
    }
  }
}

FAQ

Slack MCP Server (Ubie) or WhatsApp MCP Server (lharries) — which is better?

Pick Slack MCP Server (Ubie) if you prefer its approach (bot-token slack mcp for posting, reading channels and searching messages). Pick WhatsApp MCP Server (lharries) if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Can I use both Slack MCP Server (Ubie) and WhatsApp MCP Server (lharries)?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do Slack MCP Server (Ubie) and WhatsApp MCP Server (lharries) work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View Slack MCP Server (Ubie) →View WhatsApp MCP Server (lharries) →More comparisons →