Product Case Study: How I Built PromptCraft, a SaaS Platform for AI Productivity

The Problem (Chaos in the Generative AI Era)

In the past year, Generative AI (like ChatGPT, Claude) has transformed how we work. However, this technology brings a new fundamental problem for professionals and teams:

• Workflow Inefficiency: Effective prompts (commands) are valuable assets. However, most professionals store them in scattered places: notes.txt files, Google Docs, spreadsheets, or lost team chats.
• Quality Inconsistency: Two different people will get vastly different AI results, even for the same task. There's no "single source of truth" for the best prompts.
• Collaboration Difficulty: Teams can't easily share, version, or collaborate on composing complex prompts.
• Lack of Monetization: A prompt engineer expert has no easy way to "package" and sell their proven prompt expertise.

I realized the problem wasn't with the AI itself, but with the workflow management around it.

Hypothesis & Solution (Building a "Command Center")

My hypothesis: If I could create one centralized platform—a kind of "Command Center" or "Library"—to manage, create, and share prompts, I could drastically improve productivity and AI output quality for anyone.

Solution (Product): Introducing PromptCraft

I decided to build the solution myself. PromptCraft (https://promptcraft-v2.vercel.app/) is designed as a SaaS (Software as a Service) platform that addresses all the above problems.

This isn't just a "website", it's a full-stack web application with core features:

• Personal Prompt Library: A secure dashboard for users to save, edit, and categorize their prompts (Full CRUD functionality).
• Smart Prompt Generator: A tool to help users create better and more structured prompts.
• Authentication System: Users can securely sign up and login to their personal accounts.
• Marketplace Feature (Vision): Foundation for a feature where creators can monetize their best prompts.

Process (Architecture & Technology Choices)

Building a fast, secure, and scalable SaaS requires a modern technology stack. This is the technical "blueprint" of PromptCraft, demonstrating my core expertise at Bali-Webdevelover:

• Frontend (UI/UX): Next.js & TypeScript

  • Why Next.js? I needed lightning-fast performance. Next.js's Server-Side Rendering (SSR) and Static Site Generation (SSG) ensure the application loads instantly.
  • Why TypeScript? For an application as complex as SaaS, plain JavaScript isn't enough. TypeScript enforces strict rules on my code, minimizing bugs and making the system easier to maintain.

• Design & Components: Tailwind CSS & shadcn/ui

  • I avoid boring templates. Tailwind CSS allows me to build unique and utility-first custom designs without sacrificing speed.
  • shadcn/ui is used for accessible and consistent UI components (like buttons, dialogs, forms), speeding up the development process without locking me into one design theme.

• Backend & Database: [ Supabase ]

  • I chose Supabase as a backend-as-a-service. This isn't just a database; it's a complete platform that handles many things automatically:
  • Authentication: Supabase provides a secure and ready-to-use login and signup system, allowing me to implement user authentication in hours, not weeks.
  • PostgreSQL Database: The core of Supabase is a powerful PostgreSQL database. I designed a schema to store user prompts, categories, and account data relationally and efficiently.
  • Row-Level Security (RLS): Security is a priority. I enabled RLS to ensure a user can ONLY access and modify their own prompts. Data requests to the database are automatically filtered at the database level, making it very secure.

• Deployment: Vercel

  • The application is hosted on Vercel, the platform created by Next.js creators. This gives me instant deployment (CI/CD), global scalability, and high performance automatically.

Results (A Real Product, Not Just Promises)

The result of this project isn't a report or design, but a functional product you can use right now: https://promptcraft-v2.vercel.app/

For Users (Product Value): PromptCraft directly solves efficiency problems. Users now have a "home" for their AI assets, saving search time and improving their work quality.

For Clients (Proof of My Expertise): PromptCraft is my main case study. It proves that:

• I don't just make company profile websites or landing pages.
• I build complex full-stack web applications from scratch.
• I master modern SaaS architecture, from user authentication, database management, to responsive UI/UX design.
• I understand how to transform business ideas into real digital products.

Conclusion

Building PromptCraft sharpened my skills in creating functional and user-oriented digital solutions. The same skills I used to build this SaaS—deep understanding of Next.js, TypeScript, and backend architecture—are the skills I bring to every client project.

---

Try PromptCraft or Build Your Own Application

• For Professionals/Creators: Boost your AI productivity. Try PromptCraft for free here.
• For Business Owners: Do you have an idea for a custom web application, internal dashboard, or SaaS platform like this? Contact me at Bali-Webdevelover for technical consultation.