Macronutrient API

This is a sample macronutrient calculator built with Github Codespaces, ChatGPT, Claude AI, and v0 by Vercel. It also uses zod for query validation.

Authentication

There's no authentication needed for this API, but usage will be limited by NextJS rate limits for the hobby plan.

Endpoints

GET `/api/macros`

Parameters (Query Strings)

Parameter	Type	Description	Required
age	number (integer)	Your age in years.	Yes
height	number (float)	Your height in inches.	Yes
weight	number (float)	Your weight in pounds.	Yes
gender	string	Your gender, either "male" or "female".	Yes
activityLevel	string	Your activity level, one of: "sedentary", "light", "moderate", "active", "extra".	Yes

Example Request

GET /api/macros?age=30&height=70&weight=175&gender=male&activityLevel=moderate

Example Response

{
  "message": {
    "bmi": 25.1096073620719,
    "calories": 2728,
    "protein": 175,
    "fats": 91,
    "carbs": 303
  }
}

Error Response

{
  "error": [
    "age: Expected string, received null",
    "height: Height must be a number",
    "weight: Expected string, received null",
    "gender: Gender must be "male" or "female"",
    "activityLevel: Activity level must be one of sedentary, light, moderate, active, extra"
  ]
}