Klaviyo MCP Server vs WhatsApp MCP Server (lharries)

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

	Klaviyo MCP Server Klaviyo's official MCP server: manage campaigns, profiles, flows, events, and reporting from AI clients with an API key. Unverified stdio (local) API key Python	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	Python	Python
Transport	stdio (local)	stdio (local)
Auth	API key	None
GitHub stars	0	5.7k
Last commit	1 month ago	1 month ago
Verified
Actively maintained
Install	`uvx klaviyo-mcp-server@latest`	`git clone https://github.com/lharries/whatsapp-mcp && cd whatsapp-mcp/whatsapp-bridge && go run main.go`
Repo	Open	Open

Verdict

Pick Klaviyo MCP Server if you want the official, vendor-maintained server.

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

Add Klaviyo MCP Server

Install / run

uvx klaviyo-mcp-server@latest

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

{
  "mcpServers": {
    "klaviyo-mcp-server": {
      "command": "uvx",
      "args": [
        "klaviyo-mcp-server@latest"
      ],
      "env": {
        "PRIVATE_API_KEY": "<your-klaviyo-private-api-key>",
        "READ_ONLY": "false",
        "ALLOW_USER_GENERATED_CONTENT": "false"
      }
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

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

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

Pick Klaviyo MCP Server if you want the official, vendor-maintained server. 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 Klaviyo MCP Server 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 Klaviyo MCP Server 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 Klaviyo MCP Server →View WhatsApp MCP Server (lharries) →More comparisons →