Universal Modder
Open-source toolkit that teaches AI coding agents how to mod PC games you own.
StrengthAgent skills, um CLI and field notes across dozens of games under MIT.
CaveatNeeds an AI agent and setup; not a one-click mod button.
- Best for
- Modders using Claude Code, Cursor or similar agents
- Pricing
- Free · Free / open source (agent and fal asset costs separate)
- Platforms
- Windows, CLI, Claude Code, Cursor
- Category
- Mods
- Tags
- #Mods#Open Source#Coding#Agents
- Last verified

Overview
Universal Modder is an open-source toolkit that lets Claude Code mod almost any PC game you own.
It provides skills, tools and the fal MCP for recon, reverse engineering, AI-generated art, 3D and audio, in-game testing and showcase videos. It's a framework for an AI agent, not a one-click modding app.
Key features
- Skills that let Claude Code mod PC games
- Recon and reverse-engineering tools
- fal MCP for generated art, 3D and audio
- In-game testing
- Showcase video creation
Use it for
Have an agent build a mod for a single-player gameGenerate custom assets for a modExperiment with AI-assisted modding
Pricing
FreeThe toolkit is free and open source. You pay separately for Claude Code and any fal generation.
Getting started
Clone the GitHub repo and follow its setup instructions with Claude Code.
Alternatives
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