NexusWindows for Codex MCP server

by pironjulien·io.github.pironjulien/nexus-windows-codex·v3.1.1·3 stars

No reviews yet

Windows computer use in the background for Codex: UI Automation, Win32 messages, read back.

A92/100grade A

Write a review Install

What users say

No reviews yet

Be the first

Safety scan

A92/100

full report

Adoption

Growing

3 stars

Reviews

Write one

Nobody has reviewed NexusWindows for Codex yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

NexusWindows for Codex tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-24 · same rubric, same numbers if you re-run it

no findings

Code scansource not scanned: tarball over 25MB25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 0 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How NexusWindows for Codex compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 92/100; higher than 90% of 45,646 servers
GitHub stars: 3; more than 80% of 27,517 servers

Release history: 2 versions in the registry since 2026-10-23, latest 2026-10-24, typically one every 1 day.

Install NexusWindows for Codex in Claude Code, Cursor or VS Code

Runs npx -y nexus-windows-codex on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add nexus-windows-codex -- npx -y nexus-windows-codex

Add to Cursor

What the publisher says

From the NexusWindows for Codex repository's README, as published. We do not edit it. Read it on GitHub

NexusWindows for Codex

Windows computer use for Codex, in the background. An MCP server (nexus-windows-codex, one npx command) that lets OpenAI Codex see and operate Windows desktop applications while the user keeps their mouse, keyboard and foreground window. Codex's own Computer Use came to macOS first; on Windows, OpenAI's documentation says to keep the target app visible on the active desktop while it runs (Codex docs). NexusWindows for Codex has its own local .NET helper for everything: window inventory, UI Automation tree, PrintWindow capture of covered windows, Win32 messages and UI Automation patterns without focus, and its own real mouse and keyboard as the last resort, under a shared foreground token. Every action is judged from the application's real state, and a batch needs an explicit postcondition per step. It also ships as a Codex skill that layers the same session over Codex's Computer Use API (@oai/sky).

Version 3.0.1 · Windows 10/11 · Node 22+ · .NET 8 · MIT licence

Part of the Nexus family: NexusWindows (Claude · Codex · Antigravity), NexusBrowser (repo), NexusAndroid (repo). Project page: julienpiron.fr/nexuswindows.

Why

Codex's built-in Computer Use acts with the physical mouse and keyboard: it brings the target window to the front and the user has to stop working while it acts. Many Windows applications can be driven without that. NexusWindows for Codex tries the background techniques first, judges the result from the application's real state, and only uses its helper's real mouse and keyboard as a fallback, after a pause in the user's own typing and under a token shared with the other agents on the PC.

It is an MCP server (Node, no npm dependency) with a self-contained .NET helper: no listening network port, no token and no private Electron API. The optional Codex skill runs the same session in Codex's Node REPL instead, over Codex's Computer Use API.

NexusWindows family

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

NexusWindows for Codex: common questions

Is NexusWindows for Codex MCP server safe?: Yes, by our scan: it is graded A (92/100). Read the NexusWindows for Codex safety report
How do I install NexusWindows for Codex?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does NexusWindows for Codex need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is NexusWindows for Codex maintained?: The last commit was in the last day (2026-10-24). The latest release is v3.1.1.
How does NexusWindows for Codex compare with other MCP servers?: safety score 92/100 (higher than 90% of 45,646 servers); github stars 3 (more than 80% of 27,517 servers). Full comparison.