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Creating an AI Assistant Bot for KakaoTalk Open Chat – A Practical Guide to MessengerBot R

Build an AI assistant bot from start to finish that works in KakaoTalk open chat rooms using the Android app “MessengerBot R.” Implement a practical bot with 21 commands, from attendance checks and weather and stock lookups to AI news summaries, conversation summaries, and morning briefings. With each lesson, your bot gets a little smarter. Even beginners can learn to connect APIs and integrate AI features through hands-on code, then put their bot to work right away.

4 learners are taking this course

Level Beginner

Course period 1 months

Chatbot
Chatbot
api
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openai
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Chatbot
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What you will gain after the course

  • Completed a 21-command bot for attendance, notes, reservations, lookups, and AI conversations in KakaoTalk Open Chat rooms.

  • Hands-on implementation of connecting to AI APIs like OpenAI and Claude and processing requests and responses

  • Designing an Extensible Bot Based on a Command Table Structure and Managing Operating Costs

MessengerBot R – Course on Building an AI Agent for Open Chat Rooms Now Open

You don’t need to know how to code. Let’s build an AI assistant that works in your group chat.

  • Starting with a single line, !ping, in MessengerBot R, you’ll build a KakaoTalk AI assistant with 21 commands in just 12 lessons.

  • You can put it to immediate use for managing open chat rooms, study group and club group chats, and automating your personal tasks.

  • Create a working project that can check the weather, stocks, and news summaries; chat with AI; summarize conversations; and generate images.

  • You can take the course videos on Inflearn, and those who wish can join the weekly hands-on sessions (starting 11/6).

Who This Is For

People who run group chats or open chat rooms

Recommended for those who want to leave daily repetitive tasks—like taking attendance, sharing dues and announcements, or summarizing conversations they missed—to a bot.

People who are new to coding but want to build something with AI

Follow along line by line from installation onward, and see your results appear right away in KakaoTalk. Instead of difficult theory, learn by building a bot that actually works.

Those who have tried building a KakaoTalk bot but got stuck integrating AI

Handle everything from getting API keys, making POST requests, summarizing web searches, and remembering conversations to sending images with practical code you can use right away.

After completing the course,

  • After installing MessengerBot R, you can launch and customize your own KakaoTalk bot.

  • You can connect to external APIs for weather, exchange rates, stocks, and cryptocurrency to get the information you want via KakaoTalk.

  • With the OpenAI API, you can build three-line news summaries, character conversations, summaries of conversations you missed, and AI-generated image sharing yourself.

  • Learn a structure for adding new features as 'one function + one row in the command table'.

    • You can add features your group chat needs on your own, like dice rolls, polls, and birthday reminders.

  • You can run the AI assistant bot you build right away in your group chat or use it in your portfolio.

The person who created this course

  • Messenger Bot R Developer

Q. Can I take this course even if I know nothing about coding?

Yes, you can. We start with installing the program and work through the code one line at a time. Every lesson includes “What to check first if it doesn’t work,” covering common stumbling blocks for beginners in advance. The complete code is provided so you can copy and use it right away.

Q. Can I do it on an iPhone?

Unfortunately, that's not possible. MessengerBot R is an Android-only app. You’ll need an Android device running Android 5.0 or later; an old spare phone at home will work too.

Q. Are there any additional costs beyond the course?

MessengerBot R and the weather, exchange rate, and cryptocurrency price APIs are free. The AI features (Lessons 8–12) use the OpenAI API, which requires a minimum $5 prepaid balance. Costs based on actual usage are as follows:

  • One conversation: less than 1 won

  • Summarizing 300 messages: around 2 won

  • One image: about 1.3 cents

  • One month of morning briefings: about 30 cents

Q. What will I be able to do after taking the course?

You can run your own AI assistant bot with 21 commands for weather, stocks, news summaries, AI conversations, conversation summaries, image generation, document search, and morning briefings. You’ll also learn the “one function + one row in the command table” structure, so you can add the features you need yourself.

Q. How are the hands-on sessions conducted?

You can watch the course videos on Inflearn at any time. If you’d like, you can also join the weekly hands-on sessions starting November 6.

Notes Before Enrolling in the Course

Practice Environment

  • Operating system: Android 5.0 or later (iOS is not supported)

  • Tools Used

    • Messenger Bot R latest version (free; install from download.msgbot.app)

      • The Play Store version (0.7.29a) is outdated and does not work properly.

    • KakaoTalk: We recommend using a dedicated account for your bot.

    • Test account or friend: You need to send a message from an account other than the bot account for the bot to respond.

  • Required keys (free to obtain)

    • Public Data Portal authentication key: For stock prices in Lesson 7

    • OpenAI API key: Used starting in Lesson 8; prepaid credit is required.

  • PC requirements: No special specifications are required. You’ll write the code in MessengerBot R on your phone. However, having a PC makes it easier to copy and paste the code.

Learning Materials

  • 12 lecture videos (5 sections, under 5 minutes per lecture)

  • Lecture slides

  • Complete source code for each lecture (.js, ready to copy and use)

  • Lesson notes for each lecture (key concepts, code pointers, and troubleshooting tips)

Prerequisites and Notes

  • Prerequisites: None. You just need to be able to install apps and change settings on a smartphone.

  • Comply with KakaoTalk's Operating Policies: You may not use the bot for spam, unauthorized mass messaging, or anything that harms others. You are responsible for how you operate the bot.

  • Chat History and AI Transmission: Lessons 9–10 send conversation content to OpenAI. When using these features in group chats, let others know in advance, and do not send personal information.

  • API Key Security: An API key is like a password. Be sure to hide it when sharing your screen or recording.

  • Data usage terms: Stock prices may only be used for personal learning under the applicable terms of use. Cite sources in responses about weather, exchange rates, and market prices.

  • AI model changes: The AI model names (such as GPT-6 Luna) and pricing used in the course reflect the information available when the course was created and may change later.

  • How to ask questions: [Specify the question channel: e.g., Inflearn Q&A board, café question board, etc.]

Recommended for
these people

Who is this course right for?

  • Admins who run open chat rooms, study groups, and hobby group chats and want to automate repetitive tasks.

  • A beginner with no coding experience who wants to try creating a practical project using AI.

  • Existing bot developers who have tried making a KakaoTalk bot but struggled to connect AI features.

Need to know before starting?

  • Android smartphone ownership and experience using KakaoTalk open chat rooms

  • No prior knowledge of programming languages required (for beginners).

  • Willingness to create an OpenAI or Claude account to use the AI API

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Professional Course for KakaoTalk Chatbot Development

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14 lectures ∙ (1hr 54min)

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