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Automatic expense tracking on a Raspberry Pi

Fahad Hasin, who says he knows little about coding, had Claude build an expense tracker that runs every night.

Profession
Marketing Professional
Tools
Claude Code, Llama
Source
fahadhasin.substack.com ↗
Country
🌐 International
Found via
agentusecases.ai (Alex Finn) ↗
Report date
no date
Verified on
October 25, 2026
Illustrative photo: Finance sector

What they did

The system collects notification emails from several banks and cards, categorizes spending with a small local model and adds context from merchants' emails. It runs on its own every night.

How it went

He says it works better than he expected.

Good to know

Running the model locally keeps financial data out of the cloud.

The prompt

Here are purchase notifications from [period]: [paste]. Extract date, merchant, amount and card, classify them into [categories], and give me the total per category and the 5 biggest expenses.

Replace what is in [brackets]. Prompt written by us from the account, not a literal copy of the source. Do not paste other people’s personal data (privacy laws such as LGPD and GDPR apply).

Summary in our own words. Results as stated in the original account; we have not tested or audited them. Read the source ↗ Case found via agentusecases.ai (Alex Finn); text and prompt rewritten by us. Found a mistake?

Illustrative photo: Finance sector01
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