A CTO built his family's finance app with coding agents in nine days
Rodion says he built Keepard, an open-source household finance app, in nine days with Codex then Claude Code: 643 commits, 446 prompts. It pulls bank data across countries, classifies spending and asks in Telegram when unsure. Real cost to him: a $100/month subscription, about EUR 10/month to run. Self-reported.
- Agent or tool
- Claude Code / Codex
- Topic
- Home & Family
- Reported on
- Blog (DEV Community)
- Added
- 2026-10-29
Why it matters
Household admin never stops: food, schedules, bills and repairs. Cases like this show agents helping with the everyday logistics of running a home. It is one of 25 sightings filed under Home & Family on Agent Sightings (number 22 by interest), and one of 1 involving Claude Code / Codex.
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 / Codex or any similar agent and adjust the details to your situation.
Pull this month's transactions from our bank accounts, classify them, and message me on Telegram about any you are not sure of. Show a one-currency total at the end.
Tip: Begin with one small routine, check the results for a week, then widen what the agent is allowed to do.
Source
Read the original first-hand account on Blog (DEV Community): https://dev.to/rodik/i-built-a-self-hosted-family-finance-app-with-claude-code…. Our summary is a paraphrase; details are in the source.
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