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NexusBrowser MCP Server

local only

NexusBrowser runs on your own machine — the client starts it, so there is no endpoint to ping. 4 508 installs a week from pypi. Last commit 24 Oct 2026.

Your real Chrome, driven in background tabs. Needs the NexusBrowser bridge and extension.

Installs per day peak 1 653 · avg 150
a month agotoday
4 508
Installs / week
pypi · nexus-browser
4
Stars
0 open issues
24 Oct 2026
Last commit
from GitHub
MIT
License
JavaScript

What the code does

We read the source, 45 min ago · rules 995398eba69f

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Dumps the whole environment .github/workflows/publish.yml:49
              params = StdioServerParameters(command="/tmp/wheel/bin/nexus-browser", args=[], env=dict(os.environ))

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Nothing serious here today

Today is the operative word: we check NexusBrowser every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add nexus-browser -- uvx nexus-browser
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "nexus-browser": {
      "command": "uvx",
      "args": [
        "nexus-browser"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.nexus-browser]
command = "uvx"
args = ["nexus-browser"]
.cursor/mcp.json
{
  "mcpServers": {
    "nexus-browser": {
      "command": "uvx",
      "args": [
        "nexus-browser"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "nexus-browser": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "nexus-browser"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: NEXUS_BROWSER_AGENT (Agent name used for the tab group (Claude, Codex, Antigravity...)).

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NexusBrowser — questions

Answers built from our own checks of this server.

Why is there no uptime for NexusBrowser?
NexusBrowser runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package nexus-browser was installed 4 508 times last week.
How do I connect NexusBrowser?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls nexus-browser straight from pypi; nothing to host, nothing to sign up for.
How many people use NexusBrowser?
The pypi package nexus-browser was installed 4 508 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is NexusBrowser open source?
Yes — it is published under the MIT licence, written in JavaScript and 4 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.