{
  "tool_id": "body_fat_percentage_calculator",
  "slug": "body-fat-percentage-calculator",
  "path": "/body-fat-percentage-calculator/",
  "mode": "engine_module",
  "usage": "Client-side calculator. Open https://aifithub.io/body-fat-percentage-calculator/ and fill in the inputs; results render in-browser. Also importable as ES module from https://aifithub.io/engines/body-fat-percentage-calculator.js — call compute(input) with the JSON shape below.",
  "methodology": "https://aifithub.io/methodology/body-fat-percentage-calculator/",
  "sample_input": {
    "tool": "body_fat_percentage_calculator",
    "sex": "male",
    "waist_cm": 85,
    "neck_cm": 38,
    "height_cm": 178
  },
  "input_schema": {
    "type": "object",
    "properties": {
      "tool": {
        "type": "string"
      },
      "sex": {
        "type": "string"
      },
      "waist_cm": {
        "type": "number"
      },
      "neck_cm": {
        "type": "number"
      },
      "height_cm": {
        "type": "number"
      }
    },
    "required": [
      "tool",
      "sex",
      "waist_cm",
      "neck_cm",
      "height_cm"
    ]
  },
  "output_schema": {
    "type": "object",
    "properties": {
      "bodyFatPercent": {
        "type": "number"
      }
    }
  }
}