{
    "action": "tool_call",
    "reasoning": "Prior query returned NaN for total/pct. Compute total USD and top-deal share, with median to show how anomalous the largest deal is. Cast Amount in USD (VARCHAR) safely after stripping commas.",
    "tool": "query_sql",
    "args": {
        "sql": "WITH a AS (SELECT \"Startup Name\" AS s, TRY_CAST(REPLACE(\"Amount in USD\", ',', '') AS DOUBLE) AS amt FROM raw.startup_funding) SELECT COUNT(*) AS rows_total, COUNT(amt) AS rows_with_amt, SUM(amt) AS total_usd, MEDIAN(amt) AS median_usd, MAX(amt) AS max_usd, MAX(amt)/SUM(amt) AS top_share, SUM(CASE WHEN amt>=100000000 THEN amt END)/SUM(amt) AS share_from_100m_plus, COUNT(CASE WHEN amt>=100000000 THEN 1 END) AS n_100m_plus FROM a WHERE amt IS NOT NULL AND isfinite(amt)",
        "purpose": "Quantify how skewed total funding is and how anomalous the top deal is",
        "source": "raw"
    }
}