ModWrench

Your AI's wrench for game mods.

Ask in plain words why your game crashed, whether it's safe to update, or why your mods keep breaking. ModWrench reads your crash logs and your setup on your own computer and gives your AI the facts to answer with.

Install it Read the trust page

Ask it what you'd ask a modding friend

You don't pick tools. You ask, and your AI picks the right one. Cards marked Next release arrive with ModWrench 0.3.0; the ones marked Works today are in the version you install now, which can also read a crash log you paste in.

Next release

Crash Whisperer

"Why did my game crash?"

Finds your newest crash log on its own, says what happened, which mods the log points at and how sure that is, and writes a help post you can copy.

Next release

The Doctors

"Why do my mods keep breaking?"

A read-only health check of the setup behind the crashes: missing masters, plugin limits, folders Windows protects or syncs, MO2's Overwrite folder, and Steam, Proton and the Steam Deck on Linux.

Next release

Patch Day

"Is it safe to update the game?"

Checks whether your script extender plugins (SKSE, F4SE) will survive a game patch, before or after it lands.

Next release

Pulse

"Are my mods up to date?"

Checks the Thunderstore mods in your r2modman profile for updates and deprecated mods. It tells you exactly what it would send and waits for your yes.

Next release

Crew Check

"Do we all have the same mods?"

For co-op nights: each player shares a short mod list, and ModWrench says who's missing what. No network at all.

Next release

Trust Card

"Who made this mod?"

Author, uploader, where it lives and the platform's own numbers. Facts with their source, and no score: ModWrench doesn't judge anyone's mod.

Works today

Load order and LOOT

"Do any of my mods clash?"

Reads your load order from Mod Organizer 2, Vortex or r2modman and checks it against LOOT's public masterlist and the community's list of known conflicts.

Works today

Finding mods

"Find me a mod that…"

Searches Thunderstore with no account, and Nexus Mods and mod.io once you connect them, with the author on every result.

Answers you can see

Every answer comes as text any AI app can show. In apps that support MCP Apps, some answers also open as a page beside the chat. The pages can't reach the internet and keep nothing. They arrive with the next release, 0.3.0.

The crash log page: an access violation laid out into its exception, suspected form IDs, call stack, registers and loaded plugins.
A crash log, laid out. ModWrench shows what's in the log; deciding the cause is your AI's job, and the page says so.
The mods page: three Skyrim mods, each with author, platform, version, download and endorsement counts.
Search results with the author on every row.

Made for the games people mod most

Searching and load-order reading work across many more games. These four get the deepest support today.

Skyrim Special EditionNexus · Mod Organizer 2 · Vortex · SKSE
Fallout 4Nexus · Mod Organizer 2 · Vortex · F4SE
Lethal CompanyThunderstore · r2modman · BepInEx
ValheimThunderstore · r2modman · BepInEx

It's yours. Here's what that means.

ModWrench runs on your computer. There is no ModWrench service and no server of ours for it to talk to. These promises are written down in full, with how to check each one yourself, on the trust page.

  • It never downloads, installs or deletes a mod.There is no download code in it.
  • It never changes your load order, your mods or your game files.Every local tool opens files read-only.
  • It never stores your data.Nothing is written to disk. What it reads lives in memory only until the answer reaches your AI.
  • It never sends anything to us.No analytics, no crash reporting, no telemetry. No network address in its code belongs to us.
  • One write action, and only when you say yes.It can endorse a mod on Nexus to credit its author. It shows you exactly what it will do first, every time.
  • It never rates or scores a mod.It tells you what a mod is. It doesn't review someone's work back at them.

Install

You need Node.js 20 or newer and an AI app that supports MCP and can start a program on your computer. Thunderstore and the local tools work straight away, with no account and no key.

Claude Code

In a terminal, or in VS Code's terminal if you use the Claude Code extension:

claude mcp add --scope user modwrench -- npx -y @modwrench/cli

VS Code (Copilot Chat)

Open the Command Palette (Ctrl+Shift+P), run MCP: Add Server, choose Command (stdio) and enter npx -y @modwrench/cli. Then switch the chat to Agent mode.

Claude Desktop, Cursor, Cline, Continue, Roo Code

Add this to your app's MCP config and restart the app:

{
  "mcpServers": {
    "modwrench": {
      "command": "npx",
      "args": ["-y", "@modwrench/cli"]
    }
  }
}

Then just ask: "Why did my game crash?"

Honest about where it is

Still being tested

  • The pages have been tested against a stand-in for an AI app, not yet inside Claude, VS Code or the others.
  • The newest tools haven't been run against a real game install yet. Testers on PC are welcome.

What it can't do

  • It can't promise a mod is safe to run. It shows what the platform records and what your files say.
  • It only knows the conflicts LOOT and the community have written down.
  • What it reads goes to your AI app. Where that goes is up to the app you use.

Coming next