A Realistic Guide to Vibe Coding: How Non-Developers Actually Build Services

You've probably heard the term 'vibe coding' at least once by now. YouTube and news outlets keep talking about how you can build apps or web services just by giving instructions to AI in plain language, even without knowing how to code. But when you actually try it, nobody really tells you "how far you can get and where you'll get stuck." In this post, I want to lay out, from the perspective of someone who's taught coding in an educational setting, the actual stages non-developers go through to complete a one-person service — and the common points where things fall apart.

Key Takeaways- Vibe coding doesn't mean you never have to look at code — it's a workflow where you review and iterate on code through conversation with AI. - Claude Code and Cursor are development tools, while n8n is an operations automation tool — they play different roles. - The real failures don't happen at the 'building' stage but in operations, security, and maintenance.

What Exactly Is Vibe Coding?

Vibe coding is a term first coined by AI researcher Andrej Karpathy in early 2025. Instead of writing code line by line yourself, you describe your goal to AI and then review and revise the results. The key point is that while the user directs the AI, the responsibility and understanding of the final code still rests with the human.Source In other words, it's more accurate to say 'you type less' rather than 'you don't need to code at all.'

Why Is This Such a Hot Topic Right Now?

According to a recent Wall Street Journal (WSJ) analysis of payment company Stripe's data, the number of solo entrepreneurs earning over $1 million (about 1.4 billion KRW) in annual revenue doubled between 2023 and 2025. Solo entrepreneurs earning over $10 million a year nearly tripled in the same period. Source In Korea too, interest has grown after stories emerged of non-developers earning an extra 3 million won a month by taking on freelance work through vibe coding. Source Overseas, there was also the buzz-worthy case of 'Base44,' an AI coding tool built by a solo developer in just six months, which was acquired for roughly 110 billion won. Source

That said, these extreme success stories don't necessarily mean 'anyone can easily replicate them.' In fact, there are warnings that jumping in relying solely on the tools — without market analysis or customer interviews — often leads to a high failure rate.

Claude Code, Cursor, and n8n — They Play Different Roles

Lumping these tools together as one thing gets confusing. Here's a table breaking down each one's role.

It's more efficient to split the work: use Claude Code or Cursor for initial service development, and use n8n for repetitive operational tasks (order notifications, data backups, automated customer support) once you're up and running.

From Non-Developer to Finished Service — A Practical Checklist

1. Define the problem: Confirm that this is a problem someone you actually know would be willing to pay to solve
2. Define the minimum feature set: Start with 3 screens and 1-2 features (getting greedy here will definitely get you stuck)
3. Ask AI to explain the structure: Start by asking something like, "What folder structure should this service be built with?"
4. Build small, test repeatedly: Build one feature and test it right away — don't batch up a bunch of requests at once
5. Deploy: Use simple deployment services like Vercel or Railway
6. Connect operational automation: Use n8n to connect payments, notifications, and data backups
7. Check security: Double-check whether API keys, payment info, or user data are exposed

This Is Where People Get Stuck — Common Failure Points

From what I've observed in educational settings, fewer people get stuck at the 'building' stage than you'd expect. Instead, projects tend to stall on the following three things.

• Maintenance: If you don't understand the code AI wrote for you, then when a bug shows up, you end up asking it to 'start over from scratch' instead of actually fixing it.
• Security: It's common to accidentally leave API keys exposed in the code, or to store user data without encryption.
• Ongoing operations: Building the service isn't the end — server costs, customer inquiries, and updates keep coming, and a lot of people overlook this before they even start.

In fact, there are concerns being raised in communities about people jumping straight into starting a business with flashy features bolted on, skipping system architecture planning or interviews with target customers. Source In other words, better tools don't eliminate the need for planning and validation.

Practical Tips — Do This to Get Stuck Less Often

• Keep prompts to one feature at a time만 요청하기
• Before running code AI generated, ask which files will change first
• Before deploying, always separate environment variables (API keys) from your code하기
• Start your first service at freelance/side-project scale and build up experience

Frequently Asked Questions

Q1. Can you build a service entirely through vibe coding without knowing how to code at all? A. Initial development is possible, but you need at least a minimal understanding of the structure for maintenance and security management. If you never read the code at all, it becomes hard to respond when problems arise.

Q2. Which should I start with, Claude Code or Cursor? A. If you're a beginner who's more comfortable with a code editor screen, Cursor is a good fit; if you want a terminal-based, automated workflow, Claude Code suits better. Both have free trials, so I'd recommend comparing them yourself.

Q3. Is it really possible to earn 3 million won a month on the side? A. There are reported cases of this in Korea Source but this is typically the result of steadily doing freelance work for over a year. Rather than expecting big earnings right from the start, you need to go through a process of building experience with small projects.

Wrapping Up

Vibe coding has undeniably lowered the barrier to entry. But just because the tools got easier doesn't mean running a service got easier too. Keep in mind that real skill shows up not in the building, but in operating and maintaining what you built — and with that in mind, I'd encourage you to start by completing a small project.

References

• What Is Vibe Coding? - Google Cloud
• "14.3 Billion Won in Revenue Without Hiring Employees"... How AI Is Changing Entrepreneurship - Financial News
• A Non-Developer in Their 40s Makes 3 Million Won a Month Through Vibe Coding - Yozm IT
• A Solo-Built AI Coding Tool Sold for 100 Billion Won in Just 6 Months - ZDNET Korea
• Even Solo Companies Are Raising Tens of Billions... The Age of the Solopreneur - Korea Economic Daily