Slack MCP Server vs WhatsApp Messaging API

In-depth architectural comparison of the Slack MCP Server and WhatsApp Messaging API 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 local stdio subprocess 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 Messaging API 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).

Explore WhatsApp Messaging API Details

Feature & Specification Comparison

Specification	Slack MCP Server korotovsky Communication	WhatsApp Messaging API Communication
Summary	The most powerful MCP server for Slack Workspaces.	Send WhatsApp messages from Claude. No Meta Business approval or WhatsApp Business account.
Category & Scope	Communication	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": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ],
      "env": {
        "SLACK_MCP_ADD_MESSAGE_TOOL": "YOUR_SLACK_MCP_ADD_MESSAGE_TOOL_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "whatsapp-messaging-api": {
      "command": "npx",
      "args": [
        "-y",
        "whatsapp-messaging-api-mcp"
      ]
    }
  }
}

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