Quotes
GET /v1/markets/{venue}/{id}/quotes?days=30 returns a market’s recorded asks, up to 90 days back. A quote is recorded when the ask changes, so each one holds until the next.
Where the window reaches back before the market’s first recorded quote, earlier history is filled with hourly or daily closing prices. Those points carry price_usd and a source instead of asks:
Trades
GET /v1/markets/{venue}/{id}/trades returns public fills, newest first, with the taker’s side, price and quantity.