pkg/

Package api holds the JSON types of Fundarr's read API (/api/v1, see docs/api.md), so a Go app decodes the answers straight into them, and turns a copy of the history into what pkg/model and pkg/portfolio take:

Package model is the common language between sources and destinations: every platform's history is normalized into Activities, every platform's holdings into Balances.

Package portfolio values the crypto and securities held across every source: what they are worth, what went into them and what they gained, now and day by day, and the French tax on crypto disposals (formulaire 2086, crypto only).

Package price values assets on a given day, in a given currency, from free public market data: Binance and OKX daily candles for crypto, justETF's daily quotes for stocks and ETFs by ISIN (Yahoo Finance as a fallback), the European Central Bank's reference rates (through Frankfurter) between currencies.