APIs Explained: Build and Consume REST APIs — Quick Tutorial using Canva

APIs Explained: Build and Consume REST APIs — Quick Tutorial using Canva. Get practical lessons and hands-on examples at AI Computer Classes in Indore to master programming and IT development skills quickly. This article from AI Computer Classes Indore breaks down how to build and consume REST APIs into actionable steps. Includes references to tools like ChatGPT, Power BI, Excel, Figma, or Python where appropriate. Ideal for beginners and working professionals seeking fast skill gains.

APIs Explained: Build and Consume REST APIs — Quick Tutorial using Canva

APIs (Application Programming Interfaces) are the invisible bridges that make modern software systems work together. Whether you’re designing mobile apps, web dashboards, or data-driven services, REST APIs play a key role in connecting front-end and back-end systems.

In this Quick Tutorial, brought to you by AI Computer Classes – Indore, we’ll explore how to build and consume REST APIs — step-by-step — using examples and visuals created in Canva. Perfect for beginners and working professionals, this guide turns a complex concept into simple, actionable learning.

🚀 Why Learn REST APIs in 2025?

APIs are everywhere — powering mobile apps, stock trading systems, and even your favorite AI tools like ChatGPT.

Here’s why mastering REST APIs matters today:

• 🌐 Universal Skill: Works across every platform — web, mobile, IoT.
• ⚙️ Integration Power: Connects software tools, databases, and analytics.
• 📊 Career Growth: API development is one of the most in-demand IT skills.
• 🧩 Scalability: Enables modular, flexible systems that grow easily.

At AI Computer Classes, Indore, students learn how to create, test, and visualize APIs through real-world projects — gaining both conceptual clarity and practical expertise.

💡 Learn Programming & IT Hands-On at AI Computer Classes – Indore!

Boost your career with expert-led training in Python, APIs, Data Structures, and Web Development.

👉 Join our next batch now

📍 Located in Old Palasia, Indore

🧠 Understanding APIs — The Basics

An API is like a waiter at a restaurant 🍽️ — it takes your order (request), sends it to the kitchen (server), and brings back your food (response).

In tech terms:

• Client: The app making the request (like your browser or mobile app).
• Server: The system processing that request.
• Endpoint: The “URL” where the API lives (e.g., https://api.github.com/users).
• Method: The action you want to perform (GET, POST, PUT, DELETE).

⚙️ REST API — What It Means

REST (Representational State Transfer) is a design style for building scalable web services. REST APIs use HTTP methods and JSON to communicate between clients and servers.

HTTP MethodPurposeExampleGETRetrieve data/usersPOSTAdd new data/users/newPUTUpdate existing data/users/2DELETERemove data/users/3

REST APIs are simple, fast, and supported by almost every modern programming language including Python, JavaScript, and PHP.

🧩 Step 1: Building a Simple REST API

Let’s create a basic REST API using Python (Flask framework):

from flask import Flask, jsonify, request

app = Flask(__name__)

users = [{"id": 1, "name": "Amit"}, {"id": 2, "name": "Neha"}]

@app.route('/users', methods=['GET'])
def get_users():
    return jsonify(users)

@app.route('/users', methods=['POST'])
def add_user():
    new_user = request.get_json()
    users.append(new_user)
    return jsonify(new_user), 201

if __name__ == '__main__':
    app.run(debug=True)

Run this code, and you’ll have a working REST API! 🎯

You can test it using tools like Postman, Insomnia, or even your web browser.

💡 Hands-On at AI Computer Classes – Indore!

Students practice building REST APIs using Python, Flask, and FastAPI — with live demos and real-world mini-projects.

🎨 Step 2: Visualizing API Workflow in Canva

Understanding data flow is easier when visualized. Open Canva and create a diagram showing:

1. Client (Frontend App) → sends a GET request
2. Server (API) → processes and returns data in JSON
3. Database → stores information

Use arrows, labels, and icons for “Request,” “Response,” and “Data.”

This visual method is excellent for documentation, portfolios, or presentations.

🧰 Step 3: Consuming an API

You can “consume” APIs by writing code that fetches data from them. Here’s an example using JavaScript:

fetch('https://api.github.com/users/octocat')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

This code retrieves GitHub user details and logs them in your browser console.

Try This: Replace the URL with your own Flask API endpoint and see live data responses!

🧩 Step 4: Integrate API Data in a Web App

Once you know how to consume APIs, integrate them into your website or dashboard.

You can:

• Show live stock prices 🏦
• Display weather updates 🌦️
• Fetch and visualize sales reports 📊

At AI Computer Classes Indore, learners connect REST APIs with web tools like Power BI, Excel, or Figma to build full-fledged projects.

💡 Join AI Computer Classes – Indore for Real Projects!

🎯 Work on live API-based projects like weather apps, trading dashboards, and student portals.

👉 Visit AI Computer Classes to learn more.

🧩 Step 5: Error Handling & Security

Good APIs handle errors gracefully and ensure data protection.

Error Example:

{
  "error": "User not found",
  "status": 404
}

🔐 API Security Tips:

• Always use HTTPS.
• Add API Keys for authentication.
• Validate all incoming requests.
• Limit request rates to prevent misuse.

🧩 Step 6: Document Your API

Use tools like Swagger, Postman Docs, or even Canva visuals to create easy-to-read documentation.

Good Documentation Includes:

✅ API overview

✅ Available endpoints

✅ Methods and examples

✅ Authentication details

🧭 Step 7: Use APIs with Other Tools

You can extend your skills by integrating REST APIs with:

• ChatGPT API → to build chatbots 🤖
• Excel Power Query → to fetch live financial data 💹
• Power BI → for visual analytics dashboards 📊

This cross-tool integration is exactly what makes programmers job-ready in today’s market.

🎯 Benefits of Learning REST APIs

BenefitDescriptionPractical SkillBuild real-world apps with API integration.VersatilityWorks with web, mobile, and data platforms.Career EdgeDemand for API developers continues to rise.AutomationAPIs help connect and streamline systems.

🧾 Conclusion

Learning to build and consume REST APIs is like unlocking the backbone of modern technology. Whether you’re coding a chatbot, connecting trading systems, or integrating analytics tools — APIs make it all possible.

With hands-on training at AI Computer Classes – Indore, you’ll not only learn API theory but also gain practical experience using Python, Canva, and other tools to design, document, and deploy professional-grade APIs.

🚀 Start building connected systems today and shape your future in programming!

📞 Contact AI Computer Classes – Indore ✉ Email: hello@aicomputerclasses.com 📱 Phone: +91 91113 33255 📍 Address: 208, Captain CS Naidu Building, near Greater Kailash Road, Opp. School of Excellence For Eye, Opp. Grotto Arcade, Old Palasia, Indore, Madhya Pradesh 452018 🌐 Website: www.aicomputerclasses.com