{
    "action": "tool_call",
    "reasoning": "I have evidence of temporal columns from step-0 and batch counts by month from steps 1 and 3, showing growth from May 2026 (1 batch) through August 2026 (93 batches). However, I need to understand the full time range and check other major tables to give a complete picture of the overall trend. Let me examine the batches table more thoroughly to see the complete time range and pattern.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT DATE_TRUNC('month', CAST(started_at AS TIMESTAMP)) as month, COUNT(*) as batch_count FROM raw.batches WHERE started_at IS NOT NULL GROUP BY 1 ORDER BY 1",
        "purpose": "Get complete monthly batch counts to understand the full temporal trend",
        "source": "raw"
    }
}