{"id":"cuboid-calculator","engine":"core","category":"math","name":"Kalkulator prostopadłościanu","fields":[{"key":"length","label":"Długość","type":"number","default":5,"required":true,"min":0},{"key":"width","label":"Szerokość","type":"number","default":4,"required":true,"min":0},{"key":"height","label":"Wysokość","type":"number","default":3,"required":true,"min":0}],"sample":{"length":5,"width":4,"height":3}}