Slack MCP Server vs WhatsApp Chat Reader (Unofficial)

In-depth architectural comparison of the Slack MCP Server and WhatsApp Chat Reader (Unofficial) MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Slack MCP Server when:

• You need dedicated capabilities in the Communication domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: other (Free / Open Source).
• You have access to required keys: SLACK_MCP_ADD_MESSAGE_TOOL.
• Primary tools included: UserID, UserName, RealName.

Explore Slack MCP Server Details

Choose WhatsApp Chat Reader (Unofficial) when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: get_whatsapp_messages, get_whatsapp_chat_list.

Feature & Specification Comparison

Specification	Slack MCP Server korotovsky Communication	WhatsApp Chat Reader (Unofficial) Communication
Summary	The most powerful MCP server for Slack Workspaces.	Unofficial read-only MCP server for your local WhatsApp chat history (stays on your machine).
Category & Scope	Communication

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "korotovsky-slack-mcp-server": {
      "url": "https://api.slack.com/changelog/2023-07-its-later-already-for-stars-and-reminders"
    }
  }
}

{
  "mcpServers": {
    "whatsapp-chat-reader-unofficial": {
      "command": "uvx",
      "args": [
        "wa-chat-reader"
      ]
    }
  }
}

Related MCP Server Comparisons