How to send SMS through SMPP from Page Assist
This guide explains how to connect Page Assist to Ozeki SMS Gateway's built in SMS MCP server, enabling the AI assistant to send and receive SMS messages through your own on-premises SMS gateway. You will learn how to install Ozeki SMS Gateway, create an MCP user account, generate an API key, register the MCP endpoint in Page Assist, and verify the setup by sending a test message.
Solution: How to send SMS from Page Assist
Page Assist connects to the SMPP SMS MCP Server through the MCP protocol, where Page Assist acts as the MCP client and Ozeki SMS Gateway acts as the MCP server. Ozeki SMS Gateway is installed on your local machine or server and connects to the SMS service provider over the internet using an SMPP client connection. When an SMS is sent, it first travels from Page Assist to the Ozeki SMS Gateway as an MCP tool call, and the gateway forwards it to the SMS service provider over SMPP, which delivers it to the recipient's mobile phone.
What is Page Assist?
Page Assist is an open-source browser extension that brings AI chat capabilities directly into your web browser. It allows you to interact with locally running AI models through a sidebar or popup interface and supports MCP servers, enabling it to be extended with external tools such as SMS messaging, database access, and more.
What is an SMPP SMS MCP Server?
An SMPP SMS MCP Server is a standardized software bridge that uses the Model Context Protocol to connect AI assistants (like Claude) to an SMS gateway system such as Ozeki SMS Gateway, which in turn delivers messages to the mobile network over an SMPP client connection. It exposes tools like "send_message" or "list_incomings" that an AI can autonomously call to perform real-world texting tasks without custom coding. This allows users to simply ask an AI to "send John a reminder text" and have the AI securely execute the action through the server. The SMS MCP Server built into Ozeki SMS Gateway also makes receiving SMS messages possible.
Download Ozeki SMS Gateway
To use this solution you need to install the SMS Gateway on your system.
Download the software: SMS Gateway
https://ozeki-sms-gateway.com/p_727-download-sms-gateway.html
Steps to follow
You will need Page Assist installed on your system. If you have not set it up yet, follow our Page Assist installation guide.
- Install Ozeki SMS Gateway
- Setup the SMPP SMS connection
- Create an MCP user account
- Page Assist SMS MCP Server Config
- Add the SMS MCP Server config to Page Assist
- Send a test SMS
- Check the SMS in the SMS Gateway logs
Install Ozeki SMS Gateway
For a full tutorial on installing Ozeki SMS Gateway, check out our How to install Ozeki SMS Gateway on Windows guide.
Before you can use the SMS MCP Server, you need to install Ozeki SMS Gateway on your Windows machine or server. Download the installer zip file from the website, extract it, and run the executable to complete the installation. Once installed, the gateway will start automatically and its web-based management interface will be accessible from your browser.
Setup the SMPP SMS connection
For a full tutorial on setting up an SMPP Client connection, check out our SMPP Client Connection guide.
Before creating the MCP user, you need to connect Ozeki SMS Gateway to the mobile network by setting up an SMPP client. In the Connections panel, select Add new connection, and install a new SMPP client connection. Enter the host, port, and credentials provided by your SMS service provider, then save and activate the connection to bring the gateway online.
Create an MCP user account
For a full tutorial on creating an MCP User, check out our Create an MCP User guide.
Click Add new user/application, and select the MCP user type from the list. Enter a username and password for the account, then open the Advanced tab to generate an API key. Copy this key and store it in a safe location, as you will need it in the next steps.
Page Assist MCP server configuration
# Navigate to the following location in Page Assist to add the MCP server:
# Settings -> MCP Servers -> Add MCP Server
# Enter the following details in the Add MCP Server form:
Server Name: Ozeki SMS MCP
Server URL: http://{address}:9529/mcp
Auth: Bearer token
Example prompt
Send an SMS to +36301234567, the message should be "Hello from Page Assist".
Add the SMS MCP Server config to Page Assist
The following video shows how to add the Ozeki SMPP SMS MCP Server to Page Assist step-by-step.
Open the Page Assist extension in your browser and navigate to the settings page. This is where AI model configuration and MCP server integrations are managed (Figure 1).
Select the MCP Servers section from the left sidebar and click the Add MCP Server button to open the server registration form (Figure 2).
Enter Ozeki SMS MCP as the Server Name and enter the URL of
your Ozeki SMS Gateway in the Server URL field following the format
http://{address}:9529/mcp (Figure 3).
Enable the Bearer token authentication option and paste the API key you generated for your MCP user account into the token field. Click Save MCP Server to register the MCP server (Figure 4).
After saving, the Ozeki SMPP SMS MCP Server entry will appear in the MCP Servers list.
Click the + button to expand the server details and view the MCP tools,
confirming that Page Assist has successfully connected to your gateway (Figure 5).
Send a test SMS
The following video shows how to send an SMS message from Page Assist using the Ozeki SMPP SMS MCP server step-by-step.
Open Page Assist in your browser and start a new conversation. Before sending your prompt, make sure the Ozeki SMS MCP server is enabled for the current chat (Figure 6).
In the chat input, type your SMS request in plain language and press the Send button. The AI model will interpret the request and invoke the appropriate MCP tool to deliver the message (Figure 7).
Send an SMS to +36301234567, the message should be "Hello from Page Assist".
Once the tool has been executed, the result will appear in the chat. A successful response confirms that the message was submitted to the gateway and handed off for delivery (Figure 8).
Check the SMS in the SMS Gateway logs
The following video shows how to check the SMS in the logs in Ozeki SMS Gateway step-by-step.
Open Ozeki SMS Gateway in your browser and navigate to the MCP user details page by clicking on the MCP user entry in the Users and applications panel (Figure 9).
In the MCP user event log, you should see an entry for the outgoing message, including the recipient number and message text, confirming that it was successfully processed by the gateway (Figure 10).
Final thoughts
In this guide, you have learned how to connect Page Assist to Ozeki SMS Gateway's built-in SMS MCP Server and use it to send SMS messages directly from the chat interface. By installing the gateway, setting up an SMPP connection to the mobile network, creating an MCP user account, and registering the MCP endpoint in Page Assist, you now have a fully functional on-premises SMS integration that your locally hosted AI model can use to communicate with any mobile phone.