```json { "action": "tool_call", "reasoning": "I have hourly LLM call data showing cost and latency over time. I can see some patterns in the evidence (e.g., many hours with $0 cost, varying latency), but I need to see the full temporal range and identify the most notable spikes/dips. Let me query for the complete time series with key metrics to identify all significant anomalies.", "tool": "query_sql", "args": { "sql": "SELECT created_at__yyyy_mm_dd_hh, row_count, cost_usd__sum, latency_ms__avg FROM gold.llm_calls_by_created_at__yyyy_mm_dd_hh ORDER BY created_at__yyyy_mm_dd_hh", "purpose": "Get complete time series of LLM calls to identify all spikes, dips, and breaks in volume, cost, and latency", "source": "gold" } } ```