Yahoo Finance

Source — daily bars and dividends (venues YF and YFTR), no credential. It runs as a provider process, arvo-plugin-yahoo, started and supervised by the engine: the first real plugin, built against the published provider protocol, which is why it exists as one.

The price stream — the watchlist's live prices come from Yahoo's streaming endpoint, which needs no key. Ticks are display-only: a tick never becomes a bar, and nothing in the library is written from a socket.

No executor — nothing to sign in to, nothing to order.