{
    "action": "tool_call",
    "reasoning": "The inspect_columns result shows all columns are VARCHAR, including numeric-looking ones like 'Total Calls', 'AI Handled', etc. The ranges show mixed content (e.g. 'Total Calls' ranges from '..Total Calls', suggesting header rows mixed in data; 'AI Handled' ranges to '..Time', suggesting column misalignment). I need to examine actual row values to identify the quality issues. I'll query a sample of rows to see the data structure and spot problems like header rows, mixed formats, non-numeric values in numeric columns, and any other inconsistencies.",
    "tool": "query_sql",
    "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 identify data quality issues like header rows, mixed content, format inconsistencies",
        "source": "raw"
    }
}