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Nervous System MCP Server

local only

Nervous System runs on your own machine — the client starts it, so there is no endpoint to ping. 66 installs a week from npm. Last commit 17 Jul 2026.

Governance for LLM agents: 7 enforced rules + read-only reference tools. Safe in any MCP client.

Installs per day peak 51 · avg 12 · -49% w/w
a month agotoday
66
Installs / week
npm · mcp-nervous-system
4
Stars
0 open issues
17 Jul 2026
Last commit
0 releases in 90 days
MIT
License
JavaScript

What the code does

We read the source, 20 h ago · rules 3dff92dd89df

Evidence

Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.

    const result = execSync(
Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

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

We found things in this code

Code changes quietly between releases, and nobody reads the diff of a dependency. We do, on every release — watch Nervous System and you get told the day something new turns up.

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 nervous-system -- npx -y mcp-nervous-system
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "nervous-system": {
      "args": [
        "-y",
        "mcp-nervous-system"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.nervous-system]
command = "npx"
args = ["-y", "mcp-nervous-system"]
.cursor/mcp.json
{
  "mcpServers": {
    "nervous-system": {
      "args": [
        "-y",
        "mcp-nervous-system"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "nervous-system": {
      "args": [
        "-y",
        "mcp-nervous-system"
      ],
      "command": "npx"
    }
  }
}

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Nervous System — questions

Answers built from our own checks of this server.

Why is there no uptime for Nervous System?
Nervous System 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 npm package mcp-nervous-system was installed 66 times last week.
How do I connect Nervous System?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls mcp-nervous-system straight from npm; nothing to host, nothing to sign up for.
How many people use Nervous System?
The npm package mcp-nervous-system was installed 66 times in the last week. Week over week that is -49%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Nervous System 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.