Calculator API Express

A lightweight REST API for mathematical operations built with Express.js

Perfect for microservices, serverless functions, or anywhere you need instant calculations.

Get Started • Documentation • Examples

Features

+ Lightning-fast arithmetic operations
+ RESTful API with query params and JSON body support
+ Zero-config setup with built-in error handling
+ Calculation history tracking
+ TypeScript ready

Installation

npm i calculator-api-express

Quick Start

const calculatorAPI = require('calculator-api-express');
const app = calculatorAPI(); //CommonJS

import calculatorAPI from 'calculator-api-express';
const app = calculatorAPI(); //module

app.listen(3000, () => {
  console.log(' Calculator API running on port 3000');
});

API Reference

Basic Operations

Advanced Operations

Usage Examples

GET http://localhost:3000/add?a=35&b=23

GET http://localhost:3000/multiply
Content-Type: application/json

{ "a": 6, "b": 7 }

GET http://localhost:3000/factorial/5

POST http://localhost:3000/sumarray
Content-Type: application/json

{ "numbers": [1, 2, 3, 4, 5] }

{
  "result": 58,
  "operation": "add"
}

Built With

Links

Contributing

Contributions are welcome! Feel free to open issues or submit pull requests.

License

MIT © Achille010

Made with </> using Express.js