by rehan-remade
Point Claude at any game. Skills, tools and the fal MCP that let Claude Code mod almost any PC game you own: recon, reverse engineering, fal-generated art/3D/audio, in-game testing, showcase videos.
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# Add to your Claude Code skills
git clone https://github.com/rehan-remade/universal-modderGuides for using mcp servers skills like universal-modder.
Last scanned: 10/1/2026
{
"issues": [],
"status": "PASSED",
"scannedAt": "2026-10-01T10:44:18.819Z",
"npmAuditRan": true,
"pipAuditRan": true,
"promptInjectionRan": true
}See how universal-modder compares with popular alternatives.
Pick your agent. Each gets the same skills (Agent Skills format), the fal MCP server, and the um CLI.
| Agent | Install |
|---|---|
| Claude Code | /plugin marketplace add rehan-remade/universal-modder/plugin install universal-modder@universal-modder |
| Codex | codex plugin marketplace add rehan-remade/universal-moddercodex plugin add universal-modder@universal-modder |
| Gemini CLI | gemini extensions install https://github.com/rehan-remade/universal-modder |
| VS Code / Copilot | Enable chat.plugins.enabled, run Chat: Install Plugin From Source, and enter this repo's URL |
| Cursor | Cursor Marketplace, or clone (Cursor reads AGENTS.md and .cursor/mcp.json) |
| OpenCode | Clone and run opencode inside it (opencode.json adds the skills and the fal MCP server) |
| Skills only(any agent) | npx skills add https://github.com/rehan-remade/universal-modder |
| Anything else | git clone https://github.com/rehan-remade/universal-modder and start your agent inside it |
Inside a clone, each agent finds the skills where it looks for them: .agents/skills (Codex, Gemini CLI,
Copilot, Cursor, OpenCode) and .claude/skills (Claude Code) are copies of skills/. Instructions are in
AGENTS.md, which CLAUDE.md and GEMINI.md point to. MCP config is in .mcp.json, .codex/config.toml,
.cursor/mcp.json, .vscode/mcp.json and opencode.json (which also points OpenCode at skills/).
The um CLI. Plugin installs and clones put it on PATH. Anywhere else:
uv tool install git+https://github.com/rehan-remade/universal-modder # or: pipx install git+...
For assets, get a fal API key. It powers both the fal MCP server and
um fal (for images without a key, um comfy uses a local ComfyUI server):
export FAL_KEY=...
You also need Git, Python 3.10+ and ffmpeg. uv is recommended. Blender is needed for 3D → sprite renders.
Windows games are driven natively or from WSL.
Mod Terraria: add a homing missile launcher and a tactical nuke that craters the world. Make the sprites with fal.
Make a new civilization for Age of Empires II with a unique unit rendered from 3D.
Put real Minecraft inside GTA V story mode. Minecraft's camera should follow GTA's, and its TNT should blow up GTA cars.
Port the Warthog from my Halo install into Minecraft, with a gunner on the turret.
What engine is
C:\Games\Foo, and has anyone modded it before?
The agent starts with the mod-any-game skill and runs the same loop every time:
knowledge/ holds field notes: how specific games were actually modded, decompiled and
reverse-engineered. Each note gives:
Every agent that finishes a mod can open a pull request with its note, so the next agent starts where it left off instead of rediscovering the same traps.
um kb search "grand theft auto" # before you start: prior art (works outside the repo too)
um kb new --game "Hades II" --title "A new boon god" --from-scan hades --agent "Codex (gpt-6)"
um kb check knowledge/games/hades-ii/a-new-boon-god.md
um kb pr knowledge/games/hades-ii/a-new-boon-god.md --yes # after your human says OK: branch, push, PR
Browse knowledge/INDEX.md. Every game is welcome. Contribution rules, for humans and
AIs, are in CONTRIBUTING.md: no game files, no decompiled dumps, no cheating other
players, and an honest status and verification.
A few notes from the community:
Skills (skills/, Agent Skills format)
The um CLI (Python). Every command has --help with examples.
universal-modder is an open-source mcp servers skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by rehan-remade. Point Claude at any game. Skills, tools and the fal MCP that let Claude Code mod almost any PC game you own: recon, reverse engineering, fal-generated art/3D/audio, in-game testing, showcase videos. It has 5,175 GitHub stars.
Yes. universal-modder passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.
Clone the repository with "git clone https://github.com/rehan-remade/universal-modder" and add it to your Claude Code skills directory (see the Installation section above).
universal-modder is primarily written in Python. It is open-source under rehan-remade on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other MCP Servers skills you can browse and compare side by side. Open the MCP Servers category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh universal-modder against similar tools.
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