```json { "action": "tool_call", "reasoning": "I need to understand what numeric metrics exist in this dataset and their significance. The card shows several measures: benefits_score, job_description_length, salary_usd, and years_experience. To determine which is most important, I should first read the overview insight to understand the dataset's purpose and context, which will help identify the primary metric.", "tool": "read_insight", "args": { "section": "overview" } } ```