Claude to share household stock and shopping lists
Klon's existing household stock app could neither share its data nor export it. Family members shopping elsewhere had to ask whether something was available, and Klon sent screenshots in response. A shared spreadsheet prototype led to a Claude Code rebuild using Firebase, with stock quantities synchronized across family phones.
note.com
Suggested prompt
Suggested prompt written by Agents In Use, not the source author. Replace bracketed inputs and review tool permissions first.
Build a household inventory we can share across phones, with quantities, expiry dates and shopping lists. Make saving visibly succeed or fail, and let us test the flow on our own family devices.
Reach people exploring AI agents
See placements →Evidence at a glance
Sourced account- Source author
- Klon
- Original account
- Read the source ↗
- Published
- Source link checked
- Reported result
- The author reports a working shared household app and migration of 234 items; a save-feedback change stopped repeated tonkatsu-sauce registration.
- Human involvement
- Klon and three family users tested real devices, reported bugs and drove fixes; voice-based questions remained unfinished.
A linked account supports attribution. It does not mean we independently reproduced its result.
Report an issue with this case
Open correction emailOpens your email app with the case link included. Nothing is sent automatically.
How the agent did it
- Describe the stock-sharing and export problems with the existing app.
- Have Claude build shared quantities, expiry records and shopping-list behavior.
- Test on family devices, fix unclear save feedback and check the real-data migration.
Klon's existing household stock app could neither share its data nor export it. Family members shopping elsewhere had to ask whether something was available, and Klon sent screenshots in response. A shared spreadsheet prototype led to a Claude Code rebuild using Firebase, with stock quantities synchronized across family phones.
The resulting app covered food and other consumables, with photos, barcode-assisted names, expiry information and automatic shopping-list additions when stock fell below its threshold. Three family members used it on their own devices, exposing problems that a single-person test had missed.
One incident produced three registrations of the same tonkatsu sauce. The save dialog disappeared without confirming success, so the family kept trying. Adding explicit saved-or-failed feedback stopped that repeat problem. Another issue affected photo uploads only for newly invited members; the solution moved uploads through a server-side path after one diagnostic approach was blocked.
The author also reports migrating 234 real inventory items into a household-based structure without loss. This required human decisions, repeated deployment checks and family feedback, rather than an unattended app build. Voice-based stock questions remained experimental. The practical result was a shared inventory and shopping system shaped by actual household use, with small feedback and screen-layout fixes proving as valuable as larger features.
Prompt
Suggested prompt (written by Agents In Use, not the author's)
Source: note.com · Klon
Frequently asked questions
Why did the same sauce get registered three times?
The dialog closed without saying whether saving succeeded, so users repeated the action. Clear success and failure feedback stopped the issue.
What made shopping lists update?
The app automatically added an item when its quantity reached zero or fell below the configured minimum stock level.
Was voice-based inventory checking finished?
No. The author describes it as experimental, with accuracy and speed still preventing release.
More details
About this account
Claude implemented the shared inventory application and revised its data, upload and interface behavior.
Firsthand source opened and read. Suggested prompt written by us from the reported workflow; no original task prompt is quoted.
Credit: Klon
Source published
Added to Agents In Use
Source checked
Tools and topics
Claude Code · Firebase · Firestore · Phone browser · Barcode scanning
Household stock · Shared shopping lists · Expiry reminders
Editorial completeness: 100/100. Measures documented fields, not agent performance or verified outcomes.