{
    "action": "tool_call",
    "reasoning": "I have LLM usage by model showing cost and token metrics. To identify the most interesting questions, I need to understand what other operational dimensions exist. Let me examine job performance data to see if I can correlate LLM usage with job outcomes, and explore what dataset characteristics are tracked.",
    "tool": "inspect_columns",
    "args": {
        "table": "job_logs"
    }
}