PayLens
Personal project, 2025
An assistant that answers questions about Indian payment fees, from card and UPI charges to gateway pricing. It retrieves from a knowledge base of more than 150 fee-rule chunks and adds live search when the base has no answer.
- Wrote an evaluation harness that reruns 20 benchmark questions after every change and scores context coverage, faithfulness and relevancy.
- Packaged with Docker and deployed on Hugging Face Spaces.
Python, LangChain, FAISS, Sentence Transformers, Streamlit, Docker