{
    "action": "tool_call",
    "reasoning": "I need to examine the actual data values to identify quality issues. The inspect_columns result shows all columns are VARCHAR (text), which is unusual for numeric measures like call counts and percentages. The ranges shown (e.g., 'Total Calls' ranging from '..Total Calls', 'AI Handled' from '..Time') suggest the data contains header rows or mixed content. I'll query a sample of rows to see the actual values and identify patterns of quality issues.",
    "tool": "query_sql",
    "purpose": "Sample raw data to identify quality issues like mixed headers, non-numeric values in numeric columns, and format inconsistencies",
    "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 50"
}