How to Create a Simple API in 30 Minutes Using GitHub Copilot

If you're a solo founder or indie hacker, you know that building a simple API can often feel like a daunting task. But what if I told you that you could whip one up in just 30 minutes using GitHub Copilot? Sounds too good to be true? Well, it’s not. In 2026, with the advancements in AI, tools like GitHub Copilot are making it easier than ever to get started with API development.

Prerequisites: What You Need to Get Started

Before diving in, make sure you have the following:

1. GitHub Account: Free to sign up, necessary for accessing Copilot.
2. Visual Studio Code: Download and install the latest version.
3. GitHub Copilot Subscription: Costs $10/month after a free trial.
4. Node.js Installed: You can download it from the official site. It’s free and essential for running JavaScript code.

Step 1: Setting Up Your Environment (5 minutes)

1. Open Visual Studio Code.

2. Create a new folder for your API project.

3. Open the terminal in VS Code and run:

   npm init -y
   

   This initializes a new Node.js project.

4. Install Express by running:

   npm install express
   

Expected Output:

You should see a package.json file and a node_modules folder created.

Step 2: Using GitHub Copilot to Generate Your API Code (15 minutes)

1. Create a new file named app.js.

2. Start by typing a comment like // Create a simple Express API that returns a greeting.

3. Let Copilot suggest the code. It should automatically generate a basic API structure. Here’s what it might look like:

   const express = require('express');
   const app = express();
   const PORT = process.env.PORT || 3000;
   
   app.get('/greet', (req, res) => {
       res.json({ message: 'Hello, World!' });
   });
   
   app.listen(PORT, () => {
       console.log(`Server is running on http://localhost:${PORT}`);
   });
   

Expected Output:

When you run node app.js, you should see Server is running on http://localhost:3000. Hitting http://localhost:3000/greet should return a JSON response with the greeting.

Step 3: Testing Your API (5 minutes)

1. Open your browser or use a tool like Postman.
2. Navigate to http://localhost:3000/greet.

Expected Output:

You should see:

{ "message": "Hello, World!" }

Troubleshooting: What Could Go Wrong

• Error: Cannot find module 'express': Make sure you ran npm install express.
• Port already in use: Change the PORT variable to another number.

What's Next: Expanding Your API

Now that you've created a simple API, consider adding more endpoints, connecting to a database, or implementing authentication. You might find tools like PostgreSQL for your database needs or Auth0 for authentication useful.

Conclusion: Start Here

Creating a simple API in 30 minutes using GitHub Copilot is not only achievable but also a great way to kickstart your project. Start with the steps above, and remember to explore the capabilities of Copilot to generate more complex features as you grow.

What We Actually Use: For our own projects, we frequently use GitHub Copilot for rapid prototyping, especially for generating boilerplate code. We combine it with Express for API development due to its simplicity and flexibility.