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The Ultimate Guide to the Transformice API: How to Build Bots, Integrate Events, and Analyze Data

Transformice has been a staple of the Flash-to-HTML5 gaming world since 2010. At its core, it’s a simple physics-based platformer where mice race to collect cheese and bring it back to the hole. However, beneath the surface lies a sophisticated, community-driven ecosystem powered by Lua scripting and, crucially, for developers, the Transformice API.

Available Libraries (Community Projects)

Several GitHub repositories have abstracted the messy HTTP requests into clean libraries: transformice api

3. Core API Message Format

3.1 Authentication Flow

| Step | Direction | Message | Description | |------|-----------|---------|-------------| | 1 | C → S | v2 | Protocol version handshake | | 2 | S → C | HELLO | Server ready | | 3 | C → S | a[username] | Login with username (no password – legacy) | | 4 | S → C | l | Login accepted | | 5 | C → S | p[community] | Select community (en, fr, br, etc.) | | 6 | S → C | K | Ready to join rooms | The Ultimate Guide to the Transformice API: How

• Moderate rooms automatically.
• Create custom room events (e.g., automatic shaman every round).
• Track player join/leave times for community events.

• The In-Game Lua API: This is the primary tool for players. Transformice allows specific "module" rooms where players can write and execute Lua scripts in real-time. These scripts control in-game elements: spawning items, changing gravity, creating custom game modes (e.g.,racing, defusing bombs, or survival), and manipulating the shaman’s powers.
• The Web/HTTP API (Unofficial/Community): Because Transformice lacks an extensive official REST API for external apps, the community has reverse-engineered endpoints to access public player data, such as profiles, titles, mouse colors, and tribe information via external websites and Discord bots.

Python or JavaScript code snippets for connecting to the server. Explaining specific Lua functions for in-game maps. Moderate rooms automatically

The catch (and it’s a big one):
Documentation is… charmingly French. That is, sparse, sometimes outdated, and often only found in old forum posts or Discord chats. Also, the API runs server-side for your room, so no client-side hacking—but that also means you can’t do real-time low-latency tricks without some creativity.

Mastering the Cheese: A Deep Dive into the Transformice API If you’ve ever wanted to track your stats, build a custom leaderboard, or create a unique tribe tool, the Transformice API is your ticket to the back-end of the cheese-loving universe. Developed by Atelier 801, this API allows the community to pull real-time data from the game and build the fansites we all rely on.

Active Ecosystem: Extensive GitHub repositories for bot templates and script compilers .