{
    "action": "tool_call",
    "reasoning": "The evidence shows a striking pattern: deals under $1K have a 42.9% win rate while ALL deals $1K+ have 100% win rates. This seems impossible in real sales - no team wins every deal above a threshold. I need to verify this isn't a data artifact by checking if 'Won' deals are the ONLY ones assigned close_value, which would make the 100% rate circular (we're only counting deals that already won).",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT deal_stage, COUNT(*) as deals, COUNT(DISTINCT CASE WHEN close_value > 0 THEN opportunity_id END) as deals_with_value, MIN(close_value) as min_val, MAX(close_value) as max_val FROM raw.b2b_sales_funnel_pipeline GROUP BY deal_stage ORDER BY deals DESC",
        "purpose": "Verify whether close_value is populated only for Won deals or if Lost/Engaging/Prospecting deals also have values assigned",
        "source": "raw"
    }
}