{
    "action": "tool_call",
    "reasoning": "Compute headline correlations between social media usage and outcomes (sleep, GPA, mental health, stress) in one query over the raw table.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, ROUND(CORR(Daily_Usage_Hours, Sleep_Duration_Hours),3) AS usage_vs_sleep, ROUND(CORR(Daily_Usage_Hours, Academic_Performance_GPA),3) AS usage_vs_gpa, ROUND(CORR(Daily_Usage_Hours, Mental_Health_Index),3) AS usage_vs_mental, ROUND(CORR(Daily_Usage_Hours, Perceived_Stress_Score),3) AS usage_vs_stress, ROUND(CORR(Sleep_Duration_Hours, Academic_Performance_GPA),3) AS sleep_vs_gpa, ROUND(CORR(Sleep_Quality_Score, Mental_Health_Index),3) AS sleepq_vs_mental, ROUND(AVG(Daily_Usage_Hours),2) AS avg_usage, ROUND(AVG(Academic_Performance_GPA),2) AS avg_gpa FROM raw.Social_media_impact_on_life",
        "purpose": "Ground candidate research questions with headline correlations between usage and outcomes",
        "source": "raw"
    }
}