MCP SMS Server

Have AI agents send SMS & voice - automated alerts and customer communication via MCP server

Transform your AI from a pure analyst to a powerful decision-maker. The LOX24 MCP server for SMS gives your AI a digital tool for the real world. Your AI agent doesn’t just send messages – it acts contextually and in real time. Without manual detours, SMS integrates directly into the thought flow of your LLMs (Large Language Models) as a native tool. From critical system alerts to automated customer contact: the execution is in one intelligent hand.

AI Agent can send an SMS to the server admin
Use cases for MCP SMS

Have your AI send voice and SMS via MCP

DevOps:
Automated server alerts

AI agents evaluate server logs in real time. In the event of critical errors, admins are notified immediately by SMS - autonomously and at lightning speed.

Productivity:
Personal AI Assistant

Your agent prioritizes emails and alerts you to VIP messages via SMS or proactively reminds you of urgent appointments.

Support:
AI-supported customer success

Identify dissatisfied customers through data analysis before a ticket is created. The AI proactively offers support via SMS.

CRM:
AI sales agent

Let your AI evaluate customer orders and send active vouchers by SMS. Product suggestions can also be sent.

SMS prompts for your AI

				
					"Send a voice message to +49123456789 with the text 'Your order is ready'"
				
			
				
					"Send an SMS to +49123456789 saying 'Hello from AI!'"
				
			
				
					"Show my incoming SMS messages"

Test MCP SMS Server now!

Integrate our MCP SMS Server into your AI today. With 50 cents free credit you can test the AI SMS service without obligation.

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Integrate the LOX24 SMS tool seamlessly into your development environment.

Integration in Claude Desktop, Cursor & Co.

This guide explains how to connect AI applications to the LOX24 MCP server to send SMS and voice messages and manage your LOX24 account.

Prerequisites

MCP Server Details

  • Server URL: https://mcp.lox24.eu/mcp
  • Authentication: API key via X-LOX24-API-KEY in the header
  • Optional header: X-LOX24-SENDER-ID (standard sender ID)

Functions

send-smsSends an SMS
send-voice-messageSends a voice message
get-balanceTransfers the account balance/credit line
get-account-infoDisplays account information
get-incomingsLists the inbox

Claude Desktop

macOS

  1. Install mcp-remote (if not already installed):
    npm install -g mcp-remote
  2. Open the Claude desktop configuration:
    open ~/Library/Application\  Support/Claude/claude_desktop_config.json

Or create it if it does not exist:

mkdir -p ~/Library/Application\  Support/Claude
touch ~/Library/Application\  Support/Claude/claude_desktop_config.json
  1. Add the LOX24 MCP server configuration:
    {
  "mcpServers": {
    "lox24": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.lox24.eu/mcp",
        "--header",
        "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
      ]
    }
  }
}
  2. Restart Claude Desktop (close and reopen)
  3. Check the connection: Look for the hammer icon in Claude

Windows

  1. Install mcp-remote:
    npm install -g mcp-remote
  2. Open the Claude desktop configuration:
    %APPDATA%\Claude\claude_desktop_config.json

Or navigate to: C:\Users\<YourUsername>\AppData\Roaming\Claude\

  1. Add the LOX24 MCP server configuration:
    {
  "mcpServers": {
    "lox24": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.lox24.eu/mcp",
        "--header",
        "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
      ]
    }
  }
}
  2. Restart Claude Desktop completely
  3. Check the connection: Look for the hammer icon

Optional: Own sender ID

To set a default sender ID for all SMS messages, add another header:

{
  "mcpServers": {
    "lox24": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.lox24.eu/mcp",
        "--header",
        "X-LOX24-API-KEY: YOUR_API_KEY_HERE",
        "--header",
        "X-LOX24-SENDER-ID: YourCompany"
      ]
    }
  }
}

Claude Code (CLI)

  1. Add the MCP SMS Server:
    claude mcp add lox24 -- npx mcp-remote https://mcp.lox24.eu/mcp  \
  --header  "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
  2. Check:
    claude mcp list

Cursor

  1. Open the cursor settings: Cmd+, (macOS) or Ctrl+, (Windows)
  2. Navigate to: Features → MCP Servers
  3. Add the MCP server configuration:
    {
  "lox24": {
    "command": "npx",
    "args": [
      "mcp-remote",
      "https://mcp.lox24.eu/mcp",
      "--header",
      "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
    ]
  }
}
  4. Restart the cursor

Windsurf (Codeium)

  1. Open the windsurf settings
  2. Go to MCP configuration
  3. Add the MCP SMS Server configuration:
    {
  "mcpServers": {
    "lox24": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.lox24.eu/mcp",
        "--header",
        "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
      ]
    }
  }
}
  4. Start windsurfing again

Cline (VS Code Extension)

  1. Install Cline extension from VS Code marketplace
  2. Open the Cline settings: Click on the gear icon
  3. Go to the MCP Servers section
  4. Complete the configuration:
    {
  "lox24": {
    "command": "npx",
    "args": [
      "mcp-remote",
      "https://mcp.lox24.eu/mcp",
      "--header",
      "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
    ]
  }
}
  5. Reload the VS Code

Continue (VS Code / JetBrains)

  1. Open the Continue configuration: – VS Code: ~/.continue/config.json – JetBrains: Settings → Continue
  2. Add the MCP server:
    {
  "mcpServers": [
    {
      "name": "lox24",
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.lox24.eu/mcp",
        "--header",
        "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
      ]
    }
  ]
}
  3. Start the extension again

Zed Editor

  1. Open Zed settings: Cmd+, (macOS)
  2. Complete the settings.json:
    {
  "language_models": {
    "mcp_servers": {
      "lox24": {
        "command": "npx",
        "args": [
          "mcp-remote",
          "https://mcp.lox24.eu/mcp",
          "--header",
          "X-LOX24-API-KEY: YOUR_API_KEY_HERE"
        ]
      }
    }
  }
}
  3. Restart Zed

Application examples

Tell your AI:

  • “Send an SMS to +49123456789 saying ‘Hello from AI!'”
  • “Check my LOX24 account balance”
  • “Get my account information”
  • “Send a voice message to +49123456789 with the text ‘Your order is ready'”
  • “Show my incoming SMS messages”

Sources of error

“Tool is not displayed”

  • Make sure that mcp-remote is installed: npm install -g mcp-remote
  • Check your API key
  • Restart the app completely
  • Check the log file

“Authentication failed” / 401 Error

  • Check your API key (v2 used?)
  • Check the spelling of the header: X-LOX24-API-KEY: YOUR_KEY
  • No space after the key?

“Connection timeout”

  • Check whether access to https://mcp.lox24.eu is possible
  • Increase the timeout time in the settings

macOS: “npx not found”

  • Check that Node.js is installed: brew install node
  • Or with the complete path: /usr/local/bin/npx

Windows: “npx not recognized”

  • Make sure that Node.js is in your directory
  • Try the complete path: C:\Program Files\nodejs\npx.cmd
  • Or restart the terminal/computer once

We have the answer to your questions!

Yes, as a German provider with a server location in Germany, LOX24 meets all the requirements of the GDPR. Data processing is carried out in accordance with the highest security standards.

Absolutely. After registering, you will receive 50 cents free credit to test the integration in your AI agent without obligation.

Our gateway supports worldwide shipping to over 200 countries at attractive conditions.

All our servers are located exclusively in Germany. We guarantee the security of your data.

No, you can cancel at any time without notice. But we are sure that you will be satisfied with us.