{
    "action": "tool_call",
    "reasoning": "No evidence has been gathered yet, so I'll compute the correlations between usage and outcome measures directly from the raw table before making any claims.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, corr(Daily_Usage_Hours, Mental_Health_Index) AS usage_mental, corr(Daily_Usage_Hours, Sleep_Duration_Hours) AS usage_sleep, corr(Daily_Usage_Hours, Academic_Performance_GPA) AS usage_gpa, corr(Daily_Usage_Hours, Sleep_Quality_Score) AS usage_sleepq, corr(Daily_Usage_Hours, Perceived_Stress_Score) AS usage_stress, corr(Weekend_Extra_Hours, Daily_Usage_Hours) AS wk_usage, corr(Weekend_Extra_Hours, Mental_Health_Index) AS wk_mental, corr(Weekend_Extra_Hours, Academic_Performance_GPA) AS wk_gpa, corr(Weekend_Extra_Hours, Sleep_Duration_Hours) AS wk_sleep, corr(Weekend_Extra_Hours, Perceived_Stress_Score) AS wk_stress, corr(Age, Academic_Performance_GPA) AS age_gpa FROM raw.Social_media_impact_on_life",
        "purpose": "Correlations of daily and weekend usage with wellbeing outcomes",
        "source": "raw"
    }
}