You will get OpenAI or Claude AI integration for your web app
Project details
You'll get a working AI feature integrated directly into your existing web app — not a prototype, not a demo, production-ready code.
I've shipped 10+ full-stack apps with OpenAI and Claude APIs. Two of my AI tools are published on npm with real users (Clouvel, Project Shield). I also built antiHack, a security SaaS with AI-powered scanning and multi-tier billing.
What I deliver:
• OpenAI or Claude API integration with optimized prompts
• Database setup for storing AI responses (Supabase/PostgreSQL)
• Clean UI for the AI feature in your existing app
• Source code + documentation
I work with Next.js, React, TypeScript, Supabase, and Node.js. If your app runs on a similar stack, I can start fast.
Other stacks are fine too.
Based in SE Asia (GMT+7). Responsive on Slack or Upwork chat.
I've shipped 10+ full-stack apps with OpenAI and Claude APIs. Two of my AI tools are published on npm with real users (Clouvel, Project Shield). I also built antiHack, a security SaaS with AI-powered scanning and multi-tier billing.
What I deliver:
• OpenAI or Claude API integration with optimized prompts
• Database setup for storing AI responses (Supabase/PostgreSQL)
• Clean UI for the AI feature in your existing app
• Source code + documentation
I work with Next.js, React, TypeScript, Supabase, and Node.js. If your app runs on a similar stack, I can start fast.
Other stacks are fine too.
Based in SE Asia (GMT+7). Responsive on Slack or Upwork chat.
AI Algorithms
Large Language Model, Transformer ModelAI Applications
AI Chatbot, AI Content Creation, AI-Generated Code, Conversational AI, Natural Language GenerationAI Development Language
PythonAI Tools
Azure OpenAIAI Models
ChatGPT, GPT-4What's included
| Service Tiers |
Starter
$300
|
Standard
$1,000
|
Advanced
$2,500
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 28 days |
Number of Revisions | 2 | 3 | 5 |
AI Model Integration | |||
Batch Normalization | - | - | - |
Database Integration | - | ||
Detailed Code Comments | - | - | - |
Image Upscaling | - | - | - |
MLOps | - | - | - |
Model Deployment | - | - | |
Model Documentation | - | ||
Model Monitoring | - | - | - |
Model Testing & Optimization | - | - | |
Model Tuning | - | - | - |
Natural Language Processing | - | ||
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | |||
Setup File | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$150 - $500
Additional Revision
+$100Frequently asked questions
About Jin Hyuk
AI Integration Dev | OpenAI, Claude API & Next.js
Gwangju, South Korea - 2:23 am local time
Clouvel (AI dev workflow tool) and Project Shield (security scanner for AI coding tools) are both live on npm with real users. Most of my recent work is AI API integration: connecting OpenAI, Claude, and custom LLM pipelines into web apps that run reliably in production.
What I usually build:
AI-powered SaaS apps (content generation, automation, analysis)
Internal tools with LLM integration
Full-stack web apps with auth, payments, and dashboards
Desktop apps (Electron, Tauri)
API backends and serverless functions
Stack:
Next.js, TypeScript, React, Supabase, Cloudflare Workers, Stripe, Playwright.
Based in HCMC, with flexible hours. Send me a message with what you're building.
Steps for completing your project
After purchasing the project, send requirements so Jin Hyuk can start the project.
Delivery time starts when Jin Hyuk receives requirements from you.
Jin Hyuk works on your project following the steps below.
Revisions may occur after the delivery date.
Review codebase & plan integration
I'll review your existing app, understand the architecture, and propose how to integrate the AI feature.
Build AI integration & connect to backend
Implement the OpenAI/Claude API, prompt engineering, database storage, and connect to your existing app.