Calculator API

This API provides a high-precision mathematical calculator. It allows for complex expression evaluationI, useful for bots, apps or other applications needing safe math parsing.

Supported Operations

• Arithmetic: +, -, *, /, ^
• Functions: sqrt(), sin(), cos(), log()
• Unit conversion: 5 cm to inch

Endpoint

POST /api/v1/calc

Request Parameters

The following parameters are accepted in the request body:

Field	Type	Required	Description
expr	string	Yes	The mathematical expression to evaluate.

Request Examples

cURL

curl -X POST https://heavstal.com.ng/api/v1/calc \
-H "Content-Type: application/json" \
-H "x-api-key: <YOUR_API_KEY>" \
-d '{"expr": "sqrt(16) + 5^2"}'

JavaScript (Fetch)

const response = await fetch('https://heavstal.com.ng/api/v1/calc', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': '<YOUR_API_KEY>'
  },
  body: JSON.stringify({ expr: "sqrt(16) + 5^2" })
});

const res = await response.json();
console.log(res.data.result);

Heavstal SDK

import { tools } from '@heavstal/api';

const math = await tools.calc("sqrt(16) + 5^2");
console.log(`Result: ${math.data.result}`); // Outputs "29"

Python

import requests

url = "https://heavstal.com.ng/api/v1/calc"
headers = {
    "Content-Type": "application/json",
    "x-api-key": "<YOUR_API_KEY>"
}
payload = {
    "expr": "sqrt(16) + 5^2"
}

response = requests.post(url, headers=headers, json=payload)
print(response.json()["data"]["result"])

Response Examples

Success Response

{
  "status": "success",
  "creator": "HEAVSTAL TECH",
  "data": {
    "expression": "sqrt(16) + 5^2",
    "result": "29"
  }
}

Error Response

{
  "status": "error",
  "error": "Invalid mathematical expression."
}