DuckDB

{
  "mcpServers": {
    "duckdb": {
      "mcpServers": {
        "duckdb": {
          "env": {
            "DUCKDB_PATH": ":memory:"
          },
          "args": [
            "-y",
            "duckdb-mcp"
          ],
          "command": "npx"
        }
      }
    }
  }
}