{"name":"change_order","title":"Change Order Calculator","category":"trades","description":"Priced change order with overhead, profit and revised contract total.","price_usd":0.001,"input_schema":{"type":"object","properties":{"original_contract":{"type":"number","description":"Original contract amount in USD"},"material_cost":{"type":"number","description":"Added material cost in USD"},"labor_hours":{"type":"number","description":"Added labor hours"},"labor_rate":{"type":"number","description":"Labor rate per hour in USD"},"overhead_pct":{"type":"number","description":"Overhead percent on the change"},"profit_pct":{"type":"number","description":"Profit percent on the change"},"schedule_impact_days":{"type":"number","description":"Added days to the schedule"}},"additionalProperties":false,"required":["original_contract"]}}