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Brandrail MCP Server

by com-brandrail Your server? Claim it
local only

Brandrail runs on your own machine — the client starts it, so there is no endpoint to ping. 1 834 installs a week from npm. Last commit 6 Nov 2026.

Design system guardrails for AI coding tools: tokens, components and a brand checker. Runs locally.

Installs per day peak 438 · avg 57 · +42% w/w
a month agotoday
1 834
Installs / week
npm · brandrail
0
Stars
0 open issues
6 Nov 2026
Last commit
from GitHub
MIT
License
TypeScript

What the code does

We read the source, 3 h ago · rules 995398eba69f

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.

Runs an external command packages/cli/src/connect.ts:28
  execFile(cmd, args, () => undefined);

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

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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

Optional settings from the registry entry, left out of the block above: BRANDRAIL_KEY (Optional. API key from Brandrail Dashboard > Connect, to load your organisation's Brand Kit. Without it, the repo's brandrail.config.json or starter tokens are used).

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Brandrail — questions

Answers built from our own checks of this server.

Why is there no uptime for Brandrail?
Brandrail 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 brandrail was installed 1 834 times last week.
How do I connect Brandrail?
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 brandrail straight from npm; nothing to host, nothing to sign up for.
How many people use Brandrail?
The npm package brandrail was installed 1 834 times in the last week. Week over week that is +42%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Brandrail open source?
Yes — it is published under the MIT licence, written in TypeScript and 0 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.