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Grok

MaStR MCP Server for Grok

io.github.ulircs/mastr-mcp-server

MCP server for the German Marktstammdatenregister (MaStR) energy market register

client:Grok transport:stdio runtime:pypi

Install MaStR MCP Server in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen.

{
  "mcpServers": {
    "mastr-mcp-server": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mastr-mcp-server"
      ],
      "env": {
        "MASTR_USER": "<MASTR_USER>",
        "MASTR_TOKEN": "<MASTR_TOKEN>"
      }
    }
  }
}

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

MaStR MCP Server in other clients