Build e-ink fridge shopping list firmware
According to the write-up, the repo holds about 2,400 lines of C++ firmware for the M5Stack PaperMono, an ESP32-S3 with an e-paper touchscreen. A small FastAPI and SQLite server sits between the device and a phone web UI. It works as a fridge shopping list grouped by aisle, with offline use and queued edits.
- Agent or tool
- Claude Code
- Topic
- Shopping
- Reported on
- Hacker News
- Added
- 2026-10-15
Why it matters
Comparing products, prices and delivery options is slow work for a human and fast work for an agent. Cases like this show agents doing the legwork before anything gets bought. It is one of 75 sightings filed under Shopping on Agent Sightings (number 74 by interest), and one of 255 involving Claude Code.
How you could try it
Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Claude Code or any similar agent and adjust the details to your situation.
Shopping task: build e-ink fridge shopping list firmware. Collect order/policy details, prepare exact steps, and pause before submit or payment.
Tip: Ask the agent to stop before checkout and show you the final basket, price and delivery date before you confirm.
Source
Read the original first-hand account on Hacker News: https://news.ycombinator.com/item?id=49875801. Our summary is a paraphrase; details are in the source.
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