Bookie

The money lived in six places: a Dutch bank, Wise, a broker, two crypto exchanges and a bookkeeping app. Every overview meant exporting CSVs and pasting them into a sheet that was out of date by Tuesday.

The goal: one number that is always right, pulled automatically, without handing the keys to a third-party aggregator.

A small self-hosted server pulls every source on its own clock. Banks sync every six hours, because the European PSD2 rules allow four unattended fetches a day. Exchanges sync hourly and the broker twice a day. If a sync fails, it retries and then sends one push alert.

Money moving between your own accounts is matched in four passes, from certain to likely, so it never counts as spending. 390 merchant rules categorise the rest, and one click on the review page turns a correction into a new rule.

Claude can ask it questions over MCP: 14 read-only tools, including a SQL tool that parses every query and only allows a single SELECT on approved tables. Credentials are encrypted at rest, and it all runs on a server the owner controls.