Abstract

In today’s fast-paced world, managing schedules efficiently is essential. This publication introduces an AI-driven Telegram bot that allows users to schedule, query, and modify events in their calendar seamlessly using natural language commands. By leveraging LangChain, LangGraph, and an intent classification model, this bot understands user input, extracts key details, and interacts with Nextcloud’s calendar API to execute the requested actions.

Designed to streamline personal and professional calendar management, this bot provides a hands-free, intelligent scheduling assistant accessible directly from Telegram. This document outlines the technical architecture, implementation methodology, and potential use cases of the bot while highlighting its impact on time management and productivity.

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1. Introduction

Managing a calendar effectively is crucial for professionals, businesses, and individuals balancing multiple commitments. Traditional calendar applications often require manual data entry and rigid interface navigation, making scheduling cumbersome.

This publication presents an AI-powered Telegram bot that automates calendar management through natural language processing (NLP). Users can interact with the bot to add, retrieve, and modify calendar events effortlessly. By integrating LangChain, LangGraph, and Nextcloud, this bot eliminates friction in scheduling tasks, providing a conversational and intuitive experience.

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2. How It Works

2.1 User Interaction

The bot enables users to manage their calendar by sending text-based requests, such as:
✅ "Schedule a meeting with John on Thursday at 10 AM."
✅ "What events do I have tomorrow?"
✅ "Move Friday’s meeting to 3 PM."

Instead of requiring structured commands, the bot processes unstructured text and determines user intent through an AI-based classification system.

2.2 AI-Powered Intent Classification

The bot leverages an LLM-based intent classifier that categorizes user requests into three primary actions:

• Create an event 📅
• Modify an existing event ✏️
• Retrieve event information 🔍

Upon determining the intent, the system extracts relevant details, such as event title, date, time, and description, to proceed with execution.

2.3 Nextcloud Calendar Integration

Once the AI extracts event details, the bot interacts with Nextcloud’s Calendar API, performing actions such as:

• Adding new events with proper metadata
• Updating existing events with revised details
• Fetching and displaying scheduled events

By using Nextcloud, the bot ensures cross-device synchronization and accessibility.

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3. Technology Stack

The system integrates multiple AI and cloud-based technologies to achieve seamless event management:

3.1 Core Technologies

🧠 Natural Language Processing (NLP): Used to parse and extract structured data from unstructured user input.
🤖 LangChain & LangGraph: Enables the bot to reason about user intent and manage execution flows dynamically.
📆 Nextcloud API: Provides a secure, self-hosted calendar management solution.

3.2 Architecture Overview

1️⃣ User Message Processing: The bot receives input via Telegram.
2️⃣ Intent Classification: The AI model determines whether the request is to create, modify, or retrieve an event.
3️⃣ Event Data Extraction: Key event details (title, time, date, location) are extracted.
4️⃣ Action Execution: The bot interacts with the Nextcloud API to complete the task.

The modular architecture allows flexibility for integration with other calendar services in the future.

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4. Use Cases & Benefits

4.1 Target Users

✅ Professionals & Teams: Automate meeting scheduling and modifications.
✅ Entrepreneurs & Freelancers: Stay on top of client appointments and deadlines.
✅ Personal Productivity Users: Manage daily routines effortlessly.

4.2 Benefits

✔️ Seamless Integration: No need for manual calendar updates.
✔️ Conversational Interface: Eliminates the need for complex commands.
✔️ Cross-Platform Syncing: Works with Nextcloud, making schedules accessible from multiple devices.
✔️ Scalability: Can be expanded to integrate with other calendar providers.

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5. Conclusion

This AI-powered Telegram bot for calendar management simplifies the process of scheduling, retrieving, and modifying events. By combining NLP, LangChain, and Nextcloud’s API, the bot delivers a natural, user-friendly, and highly efficient scheduling experience.

Future enhancements may include voice command support, multi-user event collaboration, and integration with additional calendar services (Google Calendar, Outlook, etc.).

This solution represents a step toward intelligent, AI-assisted personal organization, reducing time spent on scheduling and increasing overall productivity.