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grok-mcp

grok-mcp

by PKWadsy
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

grok-mcp

MCP server that wraps the xAI Grok API. Lets Claude and other AI agents delegate thinking, planning, and real-time search to Grok.

Quick Start

One-liner to add to Claude Code on any device:

claude mcp add grok -e XAI_API_KEY=your-key -- npx -y @pkwadsy/grok-mcp

You need an xAI API key from console.x.ai.

Alternative: project config

Add to your project's .mcp.json:

{
  "mcpServers": {
    "grok": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@pkwadsy/grok-mcp"],
      "env": {
        "XAI_API_KEY": "your-xai-api-key"
      }
    }
  }
}

Related MCP server: grok-search-mcp

Tools

ask_grok

Ask Grok a question with optional file context, web search, and X/Twitter search.

Parameter

Type

Required

Description

prompt

string

yes

The question or task for Grok

files

string[]

no

Files to include in context (see file syntax below)

max_files

number

no

Override max file count (default 50)

max_file_size

number

no

Override max per-file size in KB (default 32)

system_prompt

string

no

Custom system prompt

model

string

no

Model to use (default: grok-4.20-multi-agent)

web_search

boolean

no

Web search, enabled by default

x_search

boolean

no

Enable X/Twitter search

check_files

Dry-run file resolution. Validates all files and shows sizes without calling Grok. If check_files passes, ask_grok will too.

Parameter

Type

Required

Description

files

string[]

yes

Files to check (same syntax as ask_grok)

max_files

number

no

Override max file count (default 50)

max_file_size

number

no

Override max per-file size in KB (default 32)

File syntax

Files are passed as an array of strings with compact syntax:

Syntax

Description

"src/index.ts"

Whole file

"src/index.ts:10-30"

Lines 10 to 30

"src/index.ts:10"

Just line 10

"src/**/*.ts"

Glob pattern

"large-file.ts:force"

Bypass per-file size limit

"large-file.ts:1-100:force"

Combine line range with force

Safety limits

Limit

Default

Override

Files per call

50

max_files param

Per-file size

32 KB

max_file_size param or :force suffix

Total context

256 KB

Hard cap, not overridable

Available models

  • grok-4.20-multi-agent — multi-agent mode, great for architecture and planning (default)

  • grok-4.20-reasoning — flagship reasoning

  • grok-4.20-non-reasoning — fast, no reasoning

  • grok-4.1-fast-reasoning — cheaper reasoning

  • grok-4.1-fast-non-reasoning — cheapest, fast

Examples

Ask with file context:

prompt: "Review this code for bugs"
files: ["src/index.ts", "src/utils.ts:20-50"]

Search the web:

prompt: "What happened in tech news today?"

Search X/Twitter:

prompt: "What are people saying about the new React release?"
x_search: true

Check files before asking:

files: ["src/**/*.ts"]

License

MIT

Available Tools

2 tools
ask_grokA

Ask Grok a question. Grok is great for thinking, planning, architecture, and real-time search via web and X/Twitter. Use web_search for current information from the internet. Use x_search to find and analyze posts on X/Twitter. IMPORTANT: Grok has no context about your conversation or codebase. Always include all relevant context directly in the prompt — file contents, error messages, architecture details, constraints, and goals. The more context you provide, the better Grok's response will be. Do not assume Grok knows anything about the current project. Use the files parameter to automatically include file contents with line numbers — this is preferred over pasting code into the prompt. File paths are resolved relative to the server working directory: /app. Responses include a response_id — pass it back as previous_response_id to continue a conversation without resending context.

Inputs: prompt (required), previous_response_id, files, max_files, +5 more.

check_filesA

Dry-run file resolution. Use this before ask_grok to verify files will resolve correctly and check context size. Uses the same validation as ask_grok — if check_files passes, ask_grok will too. File paths resolve relative to: /app

Inputs: files (required), max_files, max_file_size.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    Deploy Server
    One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

    TDQS

    A4.4/5.0

    Scored across 2 tools

    Disambiguation5/5

    ask_grok and check_files serve clearly distinct purposes: one is for querying Grok, the other is a dry-run validator for file resolution. No overlap or ambiguity.

    Naming Consistency5/5

    Both tool names follow a consistent verb_noun pattern (ask_grok, check_files), using underscores and clear verbs.

    Tool Count3/5

    Only 2 tools feels thin for a server that provides access to Grok, which could benefit from additional tools for conversation management or specialized searches.

    Completeness2/5

    The tool set lacks basic conversational features like retrieving history or managing context, and the promised web_search/x_search capabilities are not exposed as separate tools, limiting functionality.

    Maintenance

    ActivityInactive
    ResponsivenessNo recent community issues

    Resources

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