Grok Filesystem list_allowed_directories

Add Filesystem to Grok

1. 01

   Open .mcp.json (in your project root) and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "server-filesystem": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem"
      ]
    }
  }
}

2. 02

   Save the file and restart Grok.

3. 03

   Ask for something list_allowed_directories does. Grok lists the server's tools on connect and calls list_allowed_directories itself — you do not invoke it by name.

4. 04

   If nothing happens, check the server is running and that Filesystem's identifier in your config matches the one above exactly.

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Same tool, other clients

• Claude Code
• Claude Desktop
• Cursor
• VS Code
• Zed
• Windsurf
• Cline
• Gemini CLI
• LangChain