{"name":"sales_tax","title":"Sales Tax Calculator","category":"math","description":"Add tax to a net amount, or extract tax from a tax-inclusive total.","price_usd":0.001,"input_schema":{"type":"object","properties":{"amount":{"type":"number","description":"Amount in USD"},"tax_rate_pct":{"type":"number","description":"Tax rate as a percent, e.g. 8.25"},"inclusive":{"type":"boolean","description":"True if amount already includes tax"}},"additionalProperties":false,"required":["amount","tax_rate_pct"]}}