Fridge Agent

An AI-powered grocery manager running on a repurposed MacBook — keeping roommates in sync and food out of the trash.

The Problem

Shared fridges are chaotic. Things get bought twice, forgotten, or quietly thrown out long past their prime. For a house of four people with different schedules, coordinating groceries felt like a coordination problem worth automating.

The goal: an agent that knows what's in the fridge, what's running low, and nudges people before food goes to waste.

Hardware

An old 2015 MacBook Pro that had been sitting in a closet. Not fast enough for modern daily use, but more than capable of running a lightweight agent process 24/7. Wiped it, put it on the network, and gave it a job.

OpenClaw

OpenClaw handles the agent loop — it polls a shared grocery list, tracks item age and quantities, and sends messages when something needs attention. Setup was straightforward: define the tools (read fridge state, send message, update list), write a prompt with house rules, and let it run.

The agent checks in twice a day. If something's been in there more than a week, it flags it. If a staple is gone, it adds it to the shared shopping list automatically.

The Sustainability Angle

The agent logs everything that gets thrown out. Over a few weeks, patterns emerge — which items go bad most often, which purchases were redundant. That data shapes the shopping list going forward: smaller quantities of things we consistently waste, smarter defaults for things we always need.

Messaging

Notifications come through a shared group chat. The agent keeps it brief — no essays, just what's needed. "Spinach: day 8. Use it or lose it." That's enough.

Results

Food waste dropped noticeably in the first month. The shopping trips got more focused. And the house stopped having four half-empty bottles of the same hot sauce.