Engineering High-Performance Minecraft Mods & Resilient Cloud APIs.
Specializing in Fabric 1.21.11 bytecode manipulation, low-overhead SpongePowered Mixins, resilient Node/TypeScript microservices, and distributed cloud automation.
Systems Engineered for Stability & Speed
Precision engineering across client-side bytecode and cloud backend architectures.
Fabric 1.21.11 Client Mods
Custom bytecode injection with SpongePowered Mixins, Loom mappings, and zero-reflection hotpaths for uncompromised framerates.
Cloud Microservices & APIs
Modular Node.js and TypeScript backends, PostgreSQL relational schemas, Discord OAuth with server membership sync, and high uptime.
Automation & Reverse Engineering
Bytecode decompilation, protocol reverse engineering, autonomous mini-game solvers, and OCR captcha bypass systems.
Featured Engineering Projects
Real-world codebases spanning client mods, distributed web backends, and automation tools.
CatTags Team Identity System
A comprehensive multiplayer team identity system for Minecraft 1.21.11. Features a Fabric client mod injecting custom nametags, tablist headers, and chat prefixes via bytecode mixins. Backed by a high-performance Express REST backend, PostgreSQL relational database, and an interactive React web dashboard.
CatGame Auto-Solver & License Manager
Sub-second chat games solver mod engineered for Fabric 1.21.11. Features hardware-bound (HWID) device licensing, cryptographic token validation, dynamic server interval synchronization, and an administrative Python CLI (`key.py`) for tier provisioning.
CatGame-Sense Companion Radar
Passive companion radar mod providing preemptive countdown alerts (~20s / ~10s) before chat mini-games trigger, preventing command cooldown penalties and synchronizing server interval telemetry with the central backend.
FastClient HUD (Cosmetics & AutoSell)
Decompiled and reverse-engineered Fabric 1.21.11 HUD client mod. Successfully unlocked 999M coin store and cosmetics cache, and engineered an intelligent autonomous AutoSell module supporting inventory slot protection, container automation, and custom sell commands.
Flux Autonomous Minecraft Bot
Autonomous Mineflayer bot targeting competitive Minecraft mini-games. Integrates sub-second chat game solving, Tesseract OCR map captcha breaker, bidirectional Discord bridge, and a real-time Express web dashboard.
CatBot Discord Application
High-performance Discord application built with Discord.js v14 and TypeScript. Features DisTube high-definition audio streaming, Discord DAVE voice encryption, and debounce-protected persistent sticky message synchronization.
Book-cli Async Finder & Reader
Multi-source asynchronous terminal document searcher and reader querying over 1,000 digital libraries with integrated EPUB and PDF terminal pagination.
Engineering Principles & Stack
The standards and architecture behind high-performance mods and backends.
Bytecode Injections & Mixins
Targeting Minecraft 1.21.11 requires deep familiarity with Loom intermediary mappings and SpongePowered Mixins. Hotpaths avoid reflective lookups, injecting directly into rendering passes and packet handlers for maximum frame pacing.
Resilient Cloud Services
Services run on Node 20 ESM with strict input sanitization, rate limiting, and HTTP-only signed session cookies. Data storage relies on PostgreSQL schemas with versioned migrations for data integrity.
Automated CI/CD & Workflows
GitHub Actions build pipelines compile Java 21 Loom artifacts, execute test suites, and deploy releases directly to cloud hosts with artifact caching to conserve bandwidth.
High Availability & Keepalives
Cloud backends utilize automated 5-minute health checks via UptimeRobot, active background pingers, and self-healing mechanisms ensuring services remain responsive without cold start delays.
Technology Matrix
- Java 21 (LTS)
- TypeScript & JavaScript (ESM)
- Python 3 (Asyncio)
- SQL (PostgreSQL)
- Fabric Loader 1.21.11
- Fabric API & Loom
- SpongePowered Mixins
- Mineflayer Automation
- Node.js / Express
- PostgreSQL & Kysely
- Discord OAuth2 API
- Render Cloud & UptimeRobot
- Gradle 9 & Git
- CFR Decompiler
- Tesseract OCR
- Linux / Debian proot
Join the Community Discord
Connect with players, test beta mods, report issues, and follow real-time development updates.
itz0cat Official Server
Guild ID: 1263147204940533781Our central Discord guild hosts development announcements, early beta releases for CatTags and Fabric mods, mod support, and community discussions.
When you sign in with Discord, our OAuth flow requests the guilds.join permission.
This automatically adds your account to the official server upon authorization — no manual invite links needed!
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Click the button on the left to sign in and auto-join the server.
Discord Authentication Required
The Minecraft Utility Suite (Player & Skin Inspector, Server Status & MOTD Ping, Color Formatter, and UUID tools) is available to all community members. Sign in with Discord to access the tools.