A team placed 100 memory-equipped LLM agents in a closed economy simulation on real Pokhara Lakeside geography and ran it for 26 simulated weeks. The agents earned wages, ran businesses, and set prices autonomously. Across 91 validated runs (2.44M agent decisions, 21.5B tokens), the money stopped moving in a specific, measurable way.
This is the first published multi-agent economic simulation that runs beyond 1-2 weeks into 26-week territory. It exposes coordination, state management, and failure modes invisible in shorter runs.
The Plumbing Problem
Most agent simulations run for a few days or weeks. This one needed to maintain:
Monetary conservation: No external capital injection. Every transaction must balance across 100 concurrent agents without a central ledger lock.
