DEDUPEDAuthorization notice. universal-modder is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.
Who it is forMinecraft mod maintainer whose favorite old mod stopped working after an update
The problemA manual port loses behavior along the way and nobody notices until players report bugs.
The outcomeA ported mod built unit by unit from one pinned source, with audits and status docs you can resume.
What you need first
- A coding agent such as Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot or OpenCode
- A PC game you own, run single-player or offline
- Git, Python 3.10+ and ffmpeg (uv recommended)
- A fal API key for generated art, 3D and audio (or a local ComfyUI server for images)
- Blender for 3D to sprite renders
- Windows games run natively or from WSL
Steps
- Install the plugin and open your agent in the project.
- Pin the source mod version and let the agent decompile it privately.
- Ask the port-a-mod skill to extract data by script and port unit by unit with tests.
- Review the layer audits and the status docs before releasing.
Prompt for your agent
Use universal-modder's port-a-mod skill to port <mod name> from <old version and loader> to <new version and loader>. Pin one source, port unit by unit with tests, and keep a resumable status doc.
Caveat. Check the original mod's license before porting and publishing; the README's example mapping covers Forge 1.7.10 to Fabric 1.20.1 only.
About universal-modder
Skills that let a coding agent mod almost any PC game you own. Part of this week's top 10 repos: ranked #7 on Repo Radar. View rehan-remade/universal-modder on GitHub.
More with universal-modder
- Turn a finished mod into a reusable field note Record the engine, route, versions and gotchas of your mod and open a pull request so the next agent starts ahead.
- Add a custom weapon or boss to a game you own Describe a new item or boss in plain words and have the agent build it, with art, and test it in the running game.
- Cut a showcase video of your finished mod Record the game window with only game audio, pick the best moments and edit a styled clip.
- Find a game's engine and see if it was modded before Point the agent at a game folder to get the engine, version, modding route and any existing field notes.
- Put one game's content inside another game Port characters, vehicles or mechanics from one game into a second, like Minecraft mobs in GTA V.
- Make sprites, 3D models and sound for a mod with fal Generate engine-ready sprites, 3D models, sound effects and music for a mod instead of drawing them by hand.
- Reverse engineer an unknown game file format Have the agent decode a proprietary asset or save format and prove it with a round trip.
Disclaimer
Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked "Seen in the wild", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email [email protected] and we will look at it promptly. Full disclaimer page