# What Is an MCP Server?

> Documentation of mobile-calendar (https://www.mobile-calendar.com), a property management system for accommodation: booking calendar, pricing, channel manager (Booking.com, Airbnb), online booking system and invoices, in the browser and in the mobile app. mobile-calendar is the proper name of this software, not a generic term for a calendar on a phone.

API integrations > MCP Server > What Is an MCP Server?
URL: https://docs.mobile-calendar.com/en/guides/api-integrations/mcp-server/what-is-an-mcp-server

## Introduction

The MCP Server connects your mobile-calendar account to an external AI app: Claude or ChatGPT. Once connected, you can ask the app about bookings, pricing, and guests, and request changes using everyday language. The app only has the permissions you have in the panel, and you can revoke its access at any time.

![MCP Server - server address and connection steps](https://docs.mobile-calendar.com/media/31/313dc9c3-0c1b-425d-a8f4-27518bf7d4f0-eee81982.png)

## What the MCP Server is for

If you work with Claude or ChatGPT every day, you don't need to copy data from the panel into the app. The app can read it directly from your mobile-calendar account or save a change there when you request it.

Example questions:

- “What bookings are arriving tomorrow?”
- “What was the occupancy in October?”
- “How much does a double room with a double bed cost on the first weekend in December?”

Example requests:

- “Add a booking in room no. 3 from December 5 to 8 for two guests.”
- “Increase prices by 10% in July for all rooms.”
- “Issue an invoice for the booking in room no. 3.”
- “Send the guest in room no. 2 a message with the check-in time.”

You can combine account data with other tasks in the same conversation, for example, ask for a monthly summary or a draft reply to a guest review.

## What you need

- A **Premium** subscription in mobile-calendar.
- An account in the Claude or ChatGPT app. The providers decide which plans for these apps allow you to add your own MCP server.
- The mobile-calendar panel in a browser. You can copy the server address from it and check the list of connected apps.

## MCP Server and Mobi

Both features let you manage your property in a conversation, but they work in different places.

- **Mobi:** an AI assistant built into mobile-calendar. It works in the panel and the mobile app, requires no configuration, and shows changes on a card for approval. For more information, see the article [What is Mobi – the AI assistant?](https://docs.mobile-calendar.com/en/guides/ai-agents/mobi-ai-assistant/what-is-mobi-ai-assistant).
- **MCP Server:** a connection to your own AI app. Configure it once, then use your property data wherever you already work.

## Security

### Permissions of a connected app

The app operates with the permissions of the person who connected it. You grant access on the mobile-calendar website, so the AI app never learns your password.

- **Account owner:** the app has access to the entire account.
- **Employee:** connects the app using their own login. The app can see and change only what the employee can see and change in the panel, according to their [permissions](https://docs.mobile-calendar.com/en/guides/management/employees/employee-permissions) and assigned rooms. Changes to permissions take effect right away.

### What the app cannot see

- door codes,
- online check-in links,
- photos of guest documents,
- payment card details.

### Limits

Each connection has hourly limits: 30 messages to guests (including replies to reviews), 20 deletions, and 300 saves. If a limit is exceeded, the app is denied access until the limit resets.

> **Data is shared with the AI app provider**
>
> Your account data, including guest data, is shared with the connected app and its provider, which processes it according to its own rules. Only connect an app that you use and trust.

### Managing connections

- When a new app is connected, the account owner receives an email titled “New AI app connected to your account”. If an employee connected the app, they receive it too.
- The “Connected apps” list shows every app with access to the account, including employees’ apps. The **Disconnect** button revokes access right away.
- In the **Logs** tab, select the **MCP Server** account to check what connected apps have done.

> **Connection Configuration**
>
> The article [How to configure an MCP connection?](https://docs.mobile-calendar.com/en/guides/api-integrations/mcp-server/how-to-configure-an-mcp-connection) explains how to connect an app, grant access, and disconnect an app.