Grok MCP

grok-mcp (npm: grok-cli-mcp) is a Model Context Protocol server for Grok. It gives your primary agent (Claude, Cursor, etc.) four tools so it can delegate to Grok for high-quality second opinions and rigorous validation without leaving the session. As of v0.3. Its README documents 4 tools, including grok_chat, grok_review, grok_consult. It runs locally over stdio via the published package.

People connecting developer tools tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-07-28 · ★ 10 · #83 OF 139 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Grok MCP

before you install - you'll need

Set XAI_API_KEY, GROK_MCP_PATH_SECRET before connecting. GROK_MCP_TIMEOUT is optional or environment-specific per the README.

Claude Code

claude mcp add howardpen9-grok-mcp -- npx -y grok-cli-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "howardpen9-grok-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grok-cli-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package grok-cli-mcp - unscoped; check the name against the project README before installing

registry namespace io.github.howardpen9 is GitHub-verified and matches the repo owner

03 · What Grok MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 4 documented tools, including grok_chat, grok_review, grok_consult, grok_challenge.

The 4 tools it gives your agent

Extracted from the project's README - what grok-mcp lets an agent do.

grok_chat
grok_review
grok_consult
grok_challenge

Latest releases

v0.2.0 · 2026-06-10

The big shift: \grok_review\ is no longer just a markdown second opinion - it can now block a PR. · What's new · 1. \grok_review\ JSON mode · Pass \format: \"json\"\ to get a structured verdict suitable for any…

v0.1.3 · 2026-06-07

Discoverability Push · npm package renamed: grok-build-mcp → grok-cli-mcp · Why the split name? · The natural choice grok-mcp was already taken on npm by an unrelated project (an HTTP-API integration). So the layering…

v0.1.1 · 2026-05-26

Changes · soften review prompt to avoid triggering Grok's agentic tool use. The original template asked for "file:line references" and "suggested fixes" which nudged Grok Build into tool-use mode and hung the headless…

04 · Who maintains Grok MCP

grok-mcp is maintained by howardpen9. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/howardpen9/grok-mcp
category: developer tools - ranked #83 of 139 actively-maintained developer tools servers as of 2026-08-25.
release cadence: 2 releases in the last 90 days (latest 2026-06-10)
registry: io.github.howardpen9/grok-mcp (active, first published 2026-06-10)
packages: npm:grok-cli-mcp

06 · Grok MCP FAQ

Is Grok MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-28 and it shipped 2 releases in the last 90 days. We re-verify nightly.

What can Grok MCP do?

An agent gets 4 documented tools, including grok_chat, grok_review, grok_consult, grok_challenge.

How do I install Grok MCP?

Run `npx -y grok-cli-mcp`. The README documents 3 environment variables (XAI_API_KEY, GROK_MCP_TIMEOUT, GROK_MCP_PATH_SECRET) to set first. Set XAI_API_KEY, GROK_MCP_PATH_SECRET before connecting. GROK_MCP_TIMEOUT is optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Grok MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Grok MCP

Alternatives to Grok MCP

Maintained developer tools servers if Grok MCP isn't the fit.

Pairs well with

Servers that cover what Grok MCP doesn't - only shown when the pairing reason fits the companion.

More developer tools MCP servers · Proof Flow · Instagit · iz-tolk-MCP - Tolk Compiler for TON · Veto · Cyber Hua Tuo

More TypeScript MCP servers · Hqbase · Agent Scrape · Httpayer MCP Server · Feishu Markdown MCP · Reunion · see all