{
    "action": "tool_call",
    "reasoning": "Profile columns (type, nulls, distinct counts) to decide which pairs can be related; the table is mostly categorical with one text-typed amount.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT column_name, phys_type, semantic_role, null_count, distinct_count, uniqueness_score, min_value, max_value FROM analytics.column_overview WHERE table_name = 'startup_funding'",
        "purpose": "Profile columns to identify candidate related pairs",
        "source": "raw"
    }
}