{"success":true,"calculator":"lumber","description":"Calculate board feet for lumber pieces.","endpoint":"/api/calculate/lumber","method":"GET or POST","parameters":{"thickness_in":"Thickness in inches (default: 2)","width_in":"Width in inches (default: 4)","length_ft":"Length in feet (default: 8)","quantity":"Number of pieces (default: 1)"},"example_url":"/api/calculate/lumber?thickness_in=2&width_in=4&length_ft=8&quantity=10"}