{
    "action": "tool_call",
    "reasoning": "The inspect_columns output shows that many columns have VARCHAR type with ranges that suggest they contain header text or mixed content (e.g., 'Day' ranges to 'Voicemail', 'Total Calls' ranges to 'Total Calls'). This indicates the CSV likely has header rows mixed into the data, or the data is malformed. I need to look at actual sample rows to understand the structure and what a clean data row represents.",
    "tool": "query_sql",
    "purpose": "Sample 20 rows to see the actual data structure and identify header rows vs data rows",
    "args": {
        "sql": "SELECT Day, \"Total Calls\", \"AI Handled\", \"Human Handled\", Voicemail, \"AI Resolution %\", \"Human %\", _unnamed_7, _unnamed_8, _unnamed_9 FROM raw.callyeah_analytics_2026_07_23 LIMIT 20",
        "purpose": "Sample rows to understand data structure"
    }
}