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astral mcp for Grok

io.github.davidmosiah/astral-mcp

Precision-audited astrology MCP: natal charts, transits, synastry, moon phases. No API key.

client:Grok transport:stdio runtime:npm

Install astral mcp 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": {
    "astral-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "astral-mcp"
      ],
      "env": {
        "ASTRAL_MCP_TRANSPORT": "<ASTRAL_MCP_TRANSPORT>",
        "ASTRAL_MCP_HOST": "<ASTRAL_MCP_HOST>",
        "ASTRAL_MCP_PORT": "<ASTRAL_MCP_PORT>",
        "ASTRAL_MCP_ALLOWED_ORIGIN": "<ASTRAL_MCP_ALLOWED_ORIGIN>"
      }
    }
  }
}

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

astral mcp in other clients