ETLZero: AI Agent for Data Analysis

The problem

Business teams sit on spreadsheets and reports but can't get answers without a data analyst. The goal was to let anyone upload a file and ask questions in plain English, then get a real answer back.

What I built

• Upload pipeline for CSV, Excel, and PDF files
• An LLM agent (OpenAI) that understands the data's schema and the user's question
• Generates and runs the analysis, returning answers with charts and tables
• LangChain orchestration for multi-step reasoning over the data
• Next.js front end with a Python data layer

Outcome

• Non-technical users get instant answers from their own data
• Returns charts and tables, not just text
• Built for enterprise data workflows