How to use the Android MCP SMS Server in OobaBooga

This guide explains how to connect the Ozeki Android SMS Gateway MCP server to OobaBooga Text Generation Web UI, enabling the AI assistant to send SMS messages from your Android phone. By following this tutorial, you will learn how to install the Ozeki Android SMS Gateway app, enable its built-in MCP server, register the MCP endpoint in OobaBooga, and verify that everything is working by sending a test message.

Solution: How to send SMS from OobaBooga

OobaBooga is connected to the Ozeki Android SMS MCP Server through the MCP protocol, where OobaBooga is the MCP client and the Android phone is the MCP server. The Android phone is connected to the SMS service provider through a wireless mobile network connection. When an SMS is sent, it first travels from OobaBooga to the Android phone through the MCP protocol, and the Android phone forwards it to the SMS service provider, which delivers it to the recipient's mobile phone.

What is Oobabooga Text Generation Web UI?

Oobabooga Text Generation Web UI is an open-source web interface for running large language models locally on your own hardware. It supports a wide range of model formats and backends including llama.cpp, as well as GPU-accelerated inference for NVIDIA and AMD graphics cards. It also supports MCP servers, which allows it to be extended with external tools such as SMS messaging.

What is an Android SMS MCP Server?

An Android SMS MCP Server is a Model Context Protocol server that runs directly on an Android smartphone and exposes SMS functionality — such as sending text messages and querying SIM subscriptions — as structured tools that any MCP-compatible AI client can call. Once installed and configured, the AI client can send real SMS messages through the phone's SIM card to any phone number, with a single tool call.

Download Ozeki Android SMS Gateway

To use this solution you need to install the Android app on your Android phone.

Download the android app: Android SMS Gateway

https://android-sms-gateway.com/p_51-download-android-sms-gateway.html

Steps to follow

You will need OobaBooga Text Generation Web UI installed on your system. If you have not set it up yet, follow our OobaBooga installation guide.

1. Install Ozeki Android SMS Gateway
2. Enable MCP SMS Server
3. OobaBooga SMS MCP Server Config
4. Add the SMS MCP Server config to OobaBooga
5. Send a test SMS
6. Check the SMS in the SMS Gateway logs

Step 1 - Install Ozeki Android SMS Gateway

For a full tutorial on installing the Ozeki Android SMS Gateway, check out our How to install Android SMS Client and Enable Ozeki SMS Client permissions guides.

Before you can use the MCP SMS Server, you need to install the Ozeki SMS Client on your Android device. The app will serve as the local SMS gateway that OobaBooga connects to over your Wi-Fi network. Make sure both devices are on the same local network, as this is required for the HTTP connection to work.

Step 2 - Enable MCP SMS Server

For a full tutorial on enabling the MCP server in the Android app, check out our Android MCP SMS Server configuration guide.

Open the Ozeki SMS Client app on your Android device and tap the MCP tab in the bottom navigation bar. Tap the toggle switch to start the MCP server and grant any permission requests that appear, including access to SMS messages. The toggle will switch from "Stopped" to "Running" and the API endpoint URL will appear below. Copy this URL, as you will need it when configuring OobaBooga in the next step.

Step 3 - OobaBooga SMS MCP Server Config

# Enter the following URL in the OobaBooga MCP Servers field
# Replace {address} with your Ozeki Android SMS Gateway address
http://{address}:9531/mcp

Example prompt

Send an SMS to +36301234567, the message should be "Hello from OobaBooga TextGen".

Step 4 - Add the SMS MCP Server config to OobaBooga

The following video shows how to add the Android SMS MCP server to OobaBooga step-by-step. It covers opening the sidebar, locating the MCP Servers field, and entering the gateway endpoint URL.

Open OobaBooga in your browser and expand the sidebar on the top right side of the interface. Scroll down to locate the MCP Servers field, which is where external MCP tool servers can be registered (Figure 1).

Enter the Ozeki Android SMS MCP server URL in the MCP Servers field. Replace {address} with the IP address shown in the Ozeki SMS Client app on your Android device (Figure 2).

http://{address}:9531/mcp

Step 5 - Send a test SMS

The following video shows how to send an SMS message from OobaBooga using the Ozeki Android SMS MCP server step-by-step.

Type a plain language instruction in the OobaBooga chat input asking the AI to send an SMS to a specific phone number. The model will call the Send SMS tool and process the request (Figure 3).

Send an SMS to +36301234567, the message should be "Hello from OobaBooga TextGen".

You will see the result of the Send SMS tool call in the chat window. A successful response confirms that the message has been passed to the Android gateway and queued for delivery (Figure 4).

Step 6 - Check the SMS in the SMS Gateway logs

The following video shows how to check the gateway logs in the Ozeki SMS Client app step-by-step. This allows you to confirm that the SMS request from OobaBooga was received and processed successfully by the Android gateway.

Open the Ozeki SMS Client app on your Android device and navigate to the Settings tab in the bottom navigation bar to access the application settings. Tap the Log option to view the request and response history (Figure 5).

Select the MCP tab to show only MCP-related activity. Here you will see the incoming tool call requests from OobaBooga and the responses sent back, allowing you to confirm that the SMS was dispatched successfully (Figure 6).

Final thoughts

You have successfully configured the Ozeki Android SMS Gateway MCP server with OobaBooga Text Generation Web UI. Your Android device is now acting as a local SMS gateway that it can communicate with over your local network, enabling text messages to be sent to any phone number using plain language prompts. All SMS traffic is routed through your Android device's mobile connection, with no cloud messaging API or third-party service required.