{
    "action": "tool_call",
    "reasoning": "I need to retrieve the full list of columns, their data types, and their semantic roles/meanings for the all_ai_models table. I will query the analytics.column_overview metadata table to get this information for all 61 columns.",
    "tool": "query_sql",
    "args": {
        "purpose": "Get all columns, types, and meanings",
        "source": "raw",
        "sql": "SELECT column_name, phys_type, semantic_role, rough_kind FROM analytics.column_overview WHERE table_name = 'all_ai_models' ORDER BY column_name;"
    }
}