{
    "action": "tool_call",
    "reasoning": "Amount in USD is VARCHAR; I need to see which values are non-numeric before casting it for any analysis.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT \"Amount in USD\" AS amt, COUNT(*) AS n FROM raw.startup_funding WHERE TRY_CAST(REPLACE(\"Amount in USD\", ',', '') AS DOUBLE) IS NULL GROUP BY 1 ORDER BY n DESC LIMIT 20",
        "purpose": "See what non-numeric values the Amount column holds",
        "source": "raw"
    }
}