Username Profanity Checker | APIVerve API Tutorial

A Node.js web app for checking if usernames contain profanity. Perfect for user registration flows and community platforms.

---

Get Your Free API Key

This tutorial requires an APIVerve API key. Sign up free - no credit card required.

---

Features

• Check usernames for inappropriate content
• Real-time validation feedback
• Visual safe/profane indicators
• Example usernames to test
• Clean, modern UI
• Built with Express.js

Quick Start

1. Clone this repository

   git clone https://github.com/apiverve/username-checker-node-tutorial.git
   cd username-checker-node-tutorial

2. Install dependencies

   npm install

3. Add your API key

   Set environment variable or edit server.js:

   export API_KEY=your-api-key-here

4. Start the server

   npm start

5. Open in browser

   Visit http://localhost:3000 and check usernames!

Project Structure

username-checker-node-tutorial/
├── server.js           # Express server & API endpoint
├── public/
│   └── index.html      # Frontend UI
├── package.json        # Dependencies
├── screenshot.jpg      # Preview image
├── LICENSE             # MIT license
├── .gitignore          # Git ignore rules
└── README.md           # This file

How It Works

1. User enters a username
2. Frontend sends GET request to /api/check
3. Server calls the Username Profanity API
4. API analyzes the username
5. Frontend displays safe/profane result

The API Call

const response = await fetch(`https://api.apiverve.com/v1/usernameprofanity?username=${username}`, {
  method: 'GET',
  headers: {
    'x-api-key': API_KEY
  }
});

API Reference

Endpoint: GET https://api.apiverve.com/v1/usernameprofanity

Query Parameters:

Parameter	Type	Required	Description
username	string	Yes	The username to check

Example Response:

{
  "status": "ok",
  "error": null,
  "data": {
    "username": "cooluser123",
    "isProfane": false
  }
}

Use Cases

• User Registration - Validate usernames during signup
• Gaming Platforms - Enforce appropriate gamertags
• Social Media - Screen display names
• Forums - Moderate community usernames
• Chat Apps - Filter inappropriate handles
• E-commerce - Validate seller/buyer names

Customization Ideas

• Add batch checking for multiple usernames
• Suggest alternative usernames when profane
• Add username availability checking
• Integrate with signup forms
• Store checked usernames in database
• Add admin dashboard for moderation

Related APIs

Explore more APIs at APIVerve:

• Profanity Filter - Filter profanity from text
• Email Validator - Validate email addresses
• Username Generator - Generate usernames

Free Plan Note

This tutorial works with the free APIVerve plan. Some APIs may have:

• Locked fields: Premium response fields return null on free plans
• Ignored parameters: Some optional parameters require a paid plan

The API response includes a premium object when limitations apply. Upgrade anytime to unlock all features.

License

MIT - see LICENSE

Links

• Get API Key - Sign up free
• APIVerve Marketplace - Browse 300+ APIs
• Username Profanity API - API details