I will build custom ai agents using langchain, langgraph, and openai API


About this gig
Do you need an AI agent that actually gets work done, not just a chatbot that talks? I build custom AI agents using LangChain and LangGraph, connected to the OpenAI API. My agents can handle multi-step tasks, make decisions, and work with your existing data through database integration. What I offer: - AI agents that connect to your existing app or system - Multi-agent systems, where different agents work together on complex tasks - Database integration (PostgreSQL, MongoDB) so your agent can store and use real data - Clean, well-documented Python code, so you (or your team) can maintain it later My background: I'm an engineer working on AI-based systems for a technology innovation center, where I build AI logic engines, including virtual assistants and intelligent automation tools. I'm also currently building an AI-powered application for a real business client, using LangChain, LangGraph, and FastAPI. I take full ownership of every project, from understanding your goal to final delivery. Clear communication and honest timelines are part of how I work. Let's talk about your project before you order, so I can confirm the best package for what you need.
Get to know Felipe Cabana
AI Engineer and Software Developer
- FromColombia
- Member sinceOct 2021
Languages
Spanish, English
FAQ
Do you have experience with fine-tuning AI models?
Not yet — I focus on building agents using existing models (OpenAI, etc.) rather than fine-tuning. If your project needs fine-tuning, let's discuss it before ordering.
Can you connect the AI agent to my existing website or app?
Yes, that's included in all packages. Please share details about your current setup before ordering so I can confirm compatibility.
What's the difference between a single agent and a multi-agent system?
A single agent handles one task or workflow. A multi-agent system uses several agents working together — for example, one agent that understands a request and routes it to specialized agents for different tasks.
Do you provide the source code?
Yes, source code is included in every package.
What do you need from me to get started?
A clear description of what you want the AI agent to do, and access details for any app, database, or API it needs to connect to.

