Plan a recurring summary before automating it

Choose your starting point

n8n

The guide is free; the tool feature you use may depend on your account. Open a tool’s introduction for the relevant capabilities and source documentation.

From idea to a useful result

1. Define the event that starts the workflow and the fields each input must contain.
2. Use a manual trigger and two fictional rows for the first test. Keep the destination a draft or test sheet.
3. Decide how to identify duplicates, report failures and require approval before an external action.

Try this

Plan an n8n workflow for a weekly expense summary. Input rows contain transaction_id, date, category, amount and currency. Validate required fields; group only one currency; sum by category; create a draft for my review. No bank connection and no automatic sending. Show what happens if a row repeats or has no amount.

What a useful result looks like

Flow: Manual Trigger → sample rows → validate → remove duplicates by transaction_id → group and total by category → save draft → review. Duplicate IDs should not be counted twice; a repeated ID with conflicting values needs review. Missing amounts go to an exception list. No AI is necessary for addition; add AI only to explain the checked totals.

Check the result

Use a separate test destination. A successful first run is not enough: run the same input twice and verify that the destination does not create duplicate summaries.

Original illustrative teaching case. No external model run or product performance comparison is claimed.