Grok Build runs on your own machine — the client starts it, so there is no endpoint to ping. 109 installs a week from npm. Last commit 29 Aug 2026.
Run the Grok Build CLI as MCP tools: agent runs with live progress, code review, web research.
We read the source, 3 d 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.
child = spawn(options.binary, [...options.args], {
const logPath = path.join(runDir(ctx.config.stateDir, runId), 'worker.log');
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 grok-build-mcp-server -- npx -y grok-build-mcp-server
{
"mcpServers": {
"grok-build-mcp-server": {
"command": "npx",
"args": [
"-y",
"grok-build-mcp-server"
]
}
}
}
[mcp_servers.grok-build-mcp-server]
command = "npx"
args = ["-y", "grok-build-mcp-server"]
{
"mcpServers": {
"grok-build-mcp-server": {
"command": "npx",
"args": [
"-y",
"grok-build-mcp-server"
]
}
}
}
{
"servers": {
"grok-build-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"grok-build-mcp-server"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
GROK_BINARY (Path to the grok executable. Only needed when grok is not on PATH), GROK_MCP_PERMISSION_CEILING (Highest permission level any call may request. Granted once at registration and never prompts again), GROK_MCP_DEFAULT_PERMISSION (Permission level used when a call specifies none. Must be at or below the ceiling), GROK_MCP_DEFAULT_MODEL (Model used when a call omits one), GROK_MCP_DEFAULT_EFFORT (Reasoning effort used when a call omits one), GROK_MCP_TIMEOUT_MS (Wall-clock kill for a single run, in milliseconds), GROK_MCP_STATE_DIR (Directory for background job records. Defaults to $XDG_STATE_HOME/grok-mcp), GROK_MCP_MAX_CONCURRENT_RUNS (Background runs alive at once. Use off, none, or unlimited for no cap), STRUCTURED_CONTENT_ENABLED (Emit structuredContent alongside _meta. Off by default because some clients mishandle it).
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