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grok-mcp

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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.

Setup

npm install -g grok-mcp

Or use directly with npx:

npx grok-mcp

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

Configure in Claude Code

Add to your project's .mcp.json:

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

Tool: ask_grok

Single tool with options for different use cases.

Parameters

Parameter Type Required Description
prompt string yes The question or task for Grok
system_prompt string no Custom system prompt
model string no Model to use (default: grok-4.20-reasoning)
web_search boolean no Enable real-time web search
x_search boolean no Enable X/Twitter search

Available Models

  • grok-4.20-reasoning — flagship reasoning (default)
  • grok-4.20-non-reasoning — fast, no reasoning
  • grok-4.20-multi-agent — multi-agent mode, great for architecture and planning
  • grok-4.1-fast-reasoning — cheaper reasoning
  • grok-4.1-fast-non-reasoning — cheapest, fast

Examples

Ask a question:

prompt: "What are the trade-offs between microservices and monoliths?"

Deep architecture planning (multi-agent):

prompt: "Design a system architecture for a real-time collaborative editor"
model: "grok-4.20-multi-agent"

Search the web:

prompt: "What happened in tech news today?"
web_search: true

Search X/Twitter:

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

License

MIT

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