{
    "action": "tool_call",
    "reasoning": "I need to see the actual data structure and content to propose genuinely answerable questions. The card shows VARCHAR types for numeric columns (Total Calls, AI Handled, etc.) and several unnamed columns. I'll query a sample of rows to understand the temporal range, what the unnamed columns contain, and the data's actual structure.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT Day, \"Total Calls\", \"AI Handled\", \"Human Handled\", Voicemail, \"AI Resolution %\", \"Human %\", _unnamed_7, _unnamed_8, _unnamed_9, _ingestion_timestamp FROM raw.callyeah_analytics_2026_07_23 ORDER BY _ingestion_timestamp LIMIT 10",
        "purpose": "Sample the data to understand temporal range, content of unnamed columns, and actual data structure for proposing answerable analytical questions",
        "source": "raw"
    }
}