{
  "tool_id": "heart_rate_zone_calculator",
  "slug": "heart-rate-zone-calculator",
  "path": "/heart-rate-zone-calculator/",
  "mode": "url_api",
  "api_usage": "GET https://aifithub.io/api/heart-rate-zone-calculator/?<params>",
  "sample_input": {
    "tool": "heart_rate_zones",
    "age": 30,
    "resting_hr": 60,
    "method": "karvonen"
  },
  "input_schema": {
    "type": "object",
    "properties": {
      "tool": {
        "type": "string"
      },
      "age": {
        "type": "integer"
      },
      "resting_hr": {
        "type": "integer"
      },
      "method": {
        "type": "string"
      }
    },
    "required": [
      "tool",
      "age",
      "resting_hr",
      "method"
    ]
  },
  "output_schema": {
    "type": "object",
    "properties": {
      "maxHr": {
        "type": "number"
      },
      "hrr": {
        "type": "number"
      },
      "zones": {
        "type": "array",
        "items": {
          "type": "object",
          "properties": {
            "zone": {
              "type": "string"
            },
            "lowBpm": {
              "type": "number"
            },
            "highBpm": {
              "type": "number"
            }
          }
        }
      }
    }
  }
}