{
    "action": "tool_call",
    "reasoning": "My earlier draft cited row counts and column counts without a query result behind them. I'll pull them from the table overview metadata so the answer is grounded.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT table_name, row_count, column_count FROM analytics.table_overview ORDER BY row_count DESC",
        "purpose": "Get row and column counts for each of the 5 tables",
        "source": "raw"
    }
}