Parastore

What is Parastore?

Parastore is an open-source retail simulator released under the MIT license. Synthetic shoppers driven by LLMs navigate a three-dimensional store, inspect shelves, and decide what to buy. Each follows one of 12 behavior patterns; grammar constraints govern actions, while mood, budget, and company vary randomly. Products encountered during a shopper's route can trigger impulse purchases. Validation against actual point-of-sale records produced a Spearman correlation of 0.955. The stack pairs FastAPI and Python with Three.js and React, and accepts any LLM backend.