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.
We read the source, 3 h ago · rules 995398eba69f
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.
execFile(cmd, args, () => undefined);
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
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.
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.
claude mcp add brandrail -- npx -y brandrail
{
"mcpServers": {
"brandrail": {
"command": "npx",
"args": [
"-y",
"brandrail"
]
}
}
}
[mcp_servers.brandrail]
command = "npx"
args = ["-y", "brandrail"]
{
"mcpServers": {
"brandrail": {
"command": "npx",
"args": [
"-y",
"brandrail"
]
}
}
}
{
"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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