Read only the header block of an mBank CSV export — client name, date range, listed accounts, inflow/outflow totals — without loading the operation rows. Fast preview to confirm you have the right file.

Parse an mBank CSV operations export and return the operation rows (date, description, account, category, signed amount, currency). All filters are optional; combine them freely. Amounts are already parsed to floats (negative = expense). For big statements consider a limit to keep response size in check.

Aggregate operations by category, by account, or by month. Returns count, total inflow, total outflow, net per bucket, plus the grand totals over the filtered set. Ideal for building a monthly expense report or checking VAT-relevant categories.