This tutorial explains the main ideas behind building a Minecraft launcher.

Prerequisites

Before starting, you should:

1. Know at least one programming language, such as Python.
2. Use a language that supports I/O operations and parsing data formats such as JSON.
3. Have basic programming ability for reading and writing code.
4. Be comfortable reading technical material.

Please do not use Vibe Coding to produce a low-quality Minecraft launcher without understanding the underlying concepts.

Reading notes

This tutorial focuses on ideas, with Python snippets as supporting material. If a concept is difficult to understand, use AI to help explain it. The guide may not be complete or perfectly detailed; thank you for your understanding.

About the author

GitHub: AEBC08

Other references

• Minecraft Wiki: Tutorial: Writing a launcher

Contents

1. Understanding Minecraft version manifest files
2. Building a Minecraft launch command

Changelog

9/21/26, 5:27 AM

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• 6ead8-docs: reorganize and localize documentationon 9/21/26

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Contributors: Wuchang325