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Custom GPT with OAuth & 21 GPT Actions
Built and published a Custom GPT connected to the ChatCLB SaaS platform through a secure OpenAPI 3.1.1 Actions API. I designed 21 operations covering business discovery, availability, appointments, messaging, reviews, favourites, live menus, and POS ordering, with OAuth-based personalized access and confirmation-aware workflows.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Three years ago, we built a service provider booking app (plumbers, carpenters, electricians) from scratch, fully custom code. Took close to 4 months to get live.
Today, with AI tools like Claude and ChatGPT in the workflow, I think a comparable MVP could realistically ship in 4-6 weeks. The boilerplate and repetitive work compress fast, matching logic and payment edge cases still need real engineering judgment.
If you had to rebuild something similar today, what timeline would you expect?
Four to six weeks feels realistic for a focused MVP now. The acceleration is real, but matching rules and payment edge cases are still where the product needs careful engineering.
This is Impressive
Laravel Multi-Vendor Ecommerce & Delivery System
I worked on a complete Laravel based multi-vendor Ecommerce and delivery platform, covering both the customer facing website and the admin panel.
The platform brings products, vendors, customers, employees, delivery personnel, orders, payments, POS, and business reporting together in one system.
On the admin side, I worked on vendor and customer management, products and inventory, order processing, delivery management, employee roles, POS, support tickets, financial reports, transactions, banners, announcements, and system settings.
On the frontend, I worked on product browsing, categories, featured products, service sections, customer reviews, and the overall shopping experience.
The key focus was keeping these different workflows connected and easy to manage, while making the interfaces simple for both admins and customers.
Technologies: Laravel, PHP, MySQL, JavaScript, Bootstrap, REST APIs, Stripe.
