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$
USD
I will build an ai agent for your react or nextjs website
Andrii T
About this gig
I build production-ready AI agents and chatbots for React and Next.js websites not just a chat widget, but an agent that actually does things: searches your products, adds items to cart, answers questions, calls your APIs.
What I deliver:
- Streaming chat UI (no page reloads, feels instant)
- Tool calling agent can search products, fetch data, trigger actions
- Works with OpenAI, Gemini, Anthropic, or any LLM you prefer
- Built with Vercel AI SDK clean, maintainable code
- Fully integrated into your existing Next.js / React codebase
Live example: I built the AI assistant for Sushi Man a Prague sushi delivery restaurant. The agent understands natural language ("something spicy, under 300 Kč"), searches the menu in real time, and adds items directly to the cart. You can see it live at sushiman.cz.
What I need from you:
- Access to your codebase (or I can scaffold from scratch)
- Your product/content data (API, JSON, spreadsheet anything works)
- Preferred LLM provider (or I'll recommend one)
Drop me a message before ordering I'll tell you honestly if your project is a good fit.
Get to know Andrii T
Andrii T
Senior Frontend Engineer, React, Nextjs, TypeScript
- FromUkraine
- Member sinceAug 2024
- Avg. response time1 hour
- Last delivery1 month
Languages
English, Russian, Ukrainian
Senior Frontend Engineer with 10 years of commercial experience building production web applications across e-commerce, IoT, fintech and digital agency contexts. Specialised in React and Next.js with deep TypeScript expertise, modern styling systems (Tailwind, Styled Components, Vanilla Extract) and real-time architectures (WebSocket, GraphQL, REST). Proven record of delivering pixel-perfect interfaces, leading frontend on solo and cross-functional teams.
Portfolio: https://folio-lyart-sigma.vercel.app
My Portfolio
FAQ
Which AI models do you support?
OpenAI (GPT-4o), Google Gemini, Anthropic Claude, or any OpenAI-compatible API. I'll recommend the best fit for your budget and use case.
Do I need a Next.js project or can you work with plain React?
Both work. Next.js is ideal (API routes + streaming), but I can integrate into any React project with a backend.
Will the agent have access to my real data?
Yes — I connect it to your actual product catalog, CMS, or API via tool calling. The agent doesn't hallucinate answers, it fetches real data.
What if I just want a simple FAQ chatbot?
That's a smaller scope — message me and we'll figure out the right package.
Do you provide the LLM API key?
No, you use your own. I help you set it up and estimate costs.
