I will build ai agents using langgraph, rag and fastapi


About this gig
Stop losing potential customers because your website cant answer their questions or capture their interest in real time.
I will build a powerful AI chatbot for your website that acts as a 24/7 sales assistant, trained on your business data, documents, and website content.
Unlike basic chatbots, this is an intelligent AI system powered by RAG (Retrieval-Augmented Generation) that understands your knowledge base and responds accurately based on your actual business information.
WHAT YOU GET
AI Chatbot trained on your website, PDFs, or custom data
Smart lead generation (captures name, email, and user intent)
Admin dashboard to manage chatbot behavior and data
Secure backend system for storing chats and leads
Real-time conversation tracking and logs
Easy integration into WordPress, Next.js, or any website
ADVANCED AI SYSTEM
RAG (Retrieval-Augmented Generation) for knowledge-based answers
LangGraph for intelligent conversation flow and decision handling
FastAPI backend for scalable AI processing
PostgreSQL database for storing leads and chat history
Support for OpenAI, Claude, or local AI models (Ollama)
Get to know Shahzaib S
Generative AI Engineer and Full Stack Web Developer
- FromPakistan
- Member sinceMar 2022
- Last delivery1 year
Languages
Urdu, English
My Portfolio
FAQ
What makes LangGraph better than a standard AI chatbot?
Standard chatbots follow rigid, linear lines and break easily. A LangGraph agent uses cyclic state machines and conditional routing. This lets the agent think, loop back, self-correct errors, use custom tools, and maintain strict business rules without hallucinating.
How does the token-protected Admin Dashboard work?
It’s an isolated, secure control panel accessible only via your secret admin key. From this dashboard, you can monitor live chat transcripts, view automatically captured sales leads, analyze usage metrics, and update the agent’s knowledge base instantly.
How does the automated Lead Capture feature track clients?
As the agent chats with visitors, it naturally extracts explicit details like names, emails, and project requirements. It immediately logs this data into a persistent PostgreSQL database and can trigger an automated email notification straight to your inbox.
Can I update the agent's knowledge base without coding?
Yes! You don't have to touch a single line of backend Python code. You simply log into your Admin Dashboard, drag and drop your updated company PDFs or .txt documents into the RAG uploader, and the agent's memory updates across the live site instantly.
Will this work on my WordPress site or custom Next.js theme?
Absolutely. I deliver the frontend interaction layer as a highly optimized, responsive script widget. It can be embedded natively into your corporate WordPress theme layout or cleanly integrated directly into any modern React/Next.js component workflow.
Can this run completely offline using local LLMs?
Yes. If you have strict data privacy constraints, I can configure the entire FastAPI backend to process semantic data locally using open-source models via Ollama (like Llama 3 or Mistral) running securely on your private server infrastructure.
Do I need to buy expensive vector database subscriptions?
No. For standard deployments, I utilize high-performance, lightweight vector indexing solutions like ChromaDB or serverless database structures that operate completely free within your application framework layer, saving you massive infrastructure costs.

