{
  "endpoint": "/api/bmr-calculator",
  "method": "GET",
  "description": "Calculates the Basal Metabolic Rate (BMR) using the Mifflin-St Jeor formula.",
  "parameters": {
    "gender": { "type": "string", "enum": ["male", "female"], "required": true },
    "age": { "type": "integer", "required": true },
    "weightKg": { "type": "number", "required": true },
    "heightCm": { "type": "number", "required": true }
  },
  "formulas": {
    "male": "10 * weightKg + 6.25 * heightCm - 5 * age + 5",
    "female": "10 * weightKg + 6.25 * heightCm - 5 * age - 161"
  },
  "sample_response": {
    "bmr": 1540
  }
}