Adds up a month of invoices from a CSV export and writes the total per supplier. Use when the user drops an invoice export and asks what they owe, or wants the month's spend broken down by supplier.
Installs into .claude/skills of the current project.
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---
name: invoice-totals
description: Adds up a month of invoices from a CSV export and writes the total per supplier. Use when the user drops an invoice export and asks what they owe, or wants the month's spend broken down by supplier.
---
# Invoice totals
1. Read the CSV the user named; stop if it has no `supplier` and `amount` columns.
2. Sum `amount` per supplier and write `totals.md` with one line per supplier.
3. Print the grand total on its own line.
