# Nexus Mods Assistant

> Every mod tile on Nexus Mods gets a compatibility verdict for the game version you actually play, so you can filter a catalog page down to what will run and download the survivors in one pass instead of one tab at a time.

Canonical page: [https://chrome-stats.com/d/nexus-mods-assistant](https://chrome-stats.com/d/nexus-mods-assistant)

## Overview

- **ID:** `nexus-mods-assistant`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Alkeari
- **Category:** download-management,games-entertainment
- **Daily users:** 3
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 3.4.0
- **Last updated:** 2026-09-06
- **First published:** 2026-03-05
- **Size:** 506 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/nexus-mods-assistant/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/nexus-mods-assistant/privacy/](https://addons.mozilla.org/firefox/addon/nexus-mods-assistant/privacy/)

## Description

Every mod tile on Nexus Mods gets a compatibility verdict for the game version you actually play, so you can filter a catalog page down to what will run and download the survivors in one pass instead of one tab at a time.
<blockquote><strong>Chrome, Edge and other Chromium browsers, and Firefox 140 or later.</strong></blockquote>
<strong>⭐ What It Does</strong>
<ul><li><strong>A compatibility verdict on every mod tile</strong> - and on a mod's own page, beside the title and as a column in its requirements table, each requirement checked on its own.</li><li><strong>Six verdicts</strong> Compatible, Likely compatible, Incompatible, No version info, Couldn't check, and Not set up.</li><li><strong>The evidence, in the tooltip</strong> what the verdict matched on, and whether the match was exact or inferred.</li><li><strong>Worked out, not looked up</strong> Nexus publishes no supported-version field, so it reads the mod's version, summary, description, changelogs, file names and upload dates.</li><li><strong>Filter the grid down to what will run</strong> - a toggle per verdict hides the rest. "Not set up" has no toggle on purpose: a tile the extension has not judged is never hidden by a filter.</li><li><strong>And filter it by everything else</strong> - a keyword exclusion box, a Last Updated range, file category toggles, pagination, refresh and a download mode selector. Keywords, dates and collapsed state persist.</li><li><strong>A file list per mod without leaving the page</strong> - grouped by Main, Update, Optional, Miscellaneous and Old, each entry showing version, size and upload date. Your selection survives a reload.</li><li><strong>Bulk download</strong> - take the mods you ticked, or every tile left after filtering. The button becomes Stop mid-run, though files already started finish.</li><li><strong>Requirements handled before the download, not after it</strong> - a mod's requirements are shown with their own verdicts, and you install with them, without them, or skip the mod.</li><li><strong>Two download modes</strong> - Manual resolves a direct link through the Nexus API or your logged-in session and hands it to the browser. Vortex emits an <code>nxm://</code> link for whatever mod manager registered it.</li><li><strong>Game version lists are derived, never shipped</strong> - built at run time from the publisher's Steam patch notes and branches, SteamCMD, and the versions authors and collections state on Nexus itself.</li><li><strong>Nothing phones home</strong> - no telemetry, no analytics, no server of the author's. It talks to Nexus Mods and to Steam's public endpoints, with your own key or session, and to nothing else.</li></ul>
<strong>📋 Requirements</strong>
<ul><li>Chrome, Edge or another Chromium browser, or Firefox 140 or later.</li><li>A Nexus Mods account, to generate a key and to download anything.</li><li>A Nexus Mods Personal API Key, optional: it is what unlocks the verdicts, file lists, requirement lookups and downloads.</li><li>Vortex or Mod Organizer 2, optional, and only if you use the Vortex download mode.</li></ul>
Without a key you can still enable the extension, set a target game and version, use the filter bar, and target the game whose page you already have open. On Firefox the add-on declares that it handles sign-in data, meaning your API key, which Firefox shows you at install.

<strong>📥 Installation</strong>
<ol><li>Click <strong>Add to Firefox</strong> at the top of this page. Firefox 140 or later.</li><li>Open the extension, set your target game and its version range, and add your Nexus API key if you have one.</li><li>Open any Nexus Mods game's mods page. The filter bar appears above the grid and every tile gets a verdict.</li></ol>
<strong>⚙ Configuration</strong>

Everything lives in the popup. There is no separate options page and no keyboard shortcuts, and a change applies the next time a mods page renders.
<ul><li><strong>Power toggle</strong> in the header switches the whole extension off: no bars, no badges, no requests.</li><li><strong>Target game and version range</strong>, with an optional end version, plus a one-click suggestion from the page you have open.</li><li><strong>Nexus API key</strong>: paste one or press Authorize SSO, then Reveal, Replace or Disconnect it.</li><li><strong>Download mode</strong>, Manual or Vortex, kept in step with the on-page selector.</li><li><strong>File list toggles</strong> for Old, Update, Optional and Miscellaneous, also kept in step with the on-page panel.</li><li><strong>Exclude mods containing</strong>, the same keyword list as the on-page box, and <strong>Exclude translations</strong>, which adds Nexus's own translation filter when you open a listing.</li><li><strong>Refresh versions</strong> re-fetches build numbers for the selected game and ignores the cache.</li><li><strong>Verbose console logging</strong>, off by default, and <strong>Clear cached Nexus data</strong>, which purges the stored game list and cached responses.</li></ul>
<strong>🖥 Compatibility</strong>
<ul><li><strong>Where it runs.</strong> Only on <code>nexusmods.com/games/&amp;lt;game&gt;/mods</code> pages: the catalog listing and an individual mod's own page.</li><li><strong>Every game, no allowlist.</strong> A game with no publicly stated version anywhere gets no derived list, and the extension says so rather than inventing one.</li><li><strong>What it talks to.</strong> Nexus Mods, meaning its API, its website and its sign-on service, and Steam's public store, news and SteamCMD endpoints. Nothing else.</li><li><strong>Vortex mode needs a mod manager.</strong> Vortex or Mod Organizer 2 must already be registered for <code>nxm://</code> links, or the link goes nowhere.</li><li><strong>Free accounts still work.</strong> Nexus limits API-generated download links to Premium members. Without one the extension falls back to the mod's own download page, and tells you when that fails.</li><li><strong>Upgrading from 2.x.</strong> Your target game, version range and date filter carry over the first time the popup opens.</li><li>Not affiliated with, endorsed by, or connected to Nexus Mods, Valve, or any game publisher.</li></ul>
<strong>🐛 Support</strong>
<ul><li>Reviews here are not a bug channel and nobody can answer one. Report from the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/b5ff4f1cf762d0bc5400df009fa6044723f2bd1a172f73d7e24a590c4b076bb7/https%3A//www.nexusmods.com/site/mods/1588" rel="nofollow">Nexus Mods page</a>, where every report is tracked and answered.</li><li>Include the version from the popup header, your browser and its version, the exact page URL, and what you expected against what happened.</li></ul>
A layout report is far more useful with the URL: Nexus serves different markup to different pages and accounts.

<strong>📄 License</strong>

License terms are in the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/8dc4b39c2ea24aa85065923fe175186a1d82e73971939f3fd2e91413f8507d72/https%3A//gist.github.com/Alkeari/2c6ec0cdf3dafee375b1a00b28ca190a" rel="nofollow">Alkeari License Agreement</a>.

## Rankings

- #52,874 — Overall
- #177 — assistant

## Permissions and access

### Permissions

- `storage`
- `downloads`
- `activeTab`
- `scripting`
- `alarms`

### Host permissions

- `https://api.nexusmods.com/*`
- `https://www.nexusmods.com/*`
- `https://store.steampowered.com/*`
- `https://api.steampowered.com/*`
- `https://api.steamcmd.net/*`

### Content script matches

- `www.nexusmods.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/nexus-mods-assistant)