Yesterday I implemented the simplest data export on Hardcover: a button that makes a single GraphQL query to get all of the users data and outputs the result in a textarea.

It doesn’t use Rails, CSV or anything except Postgres, Hasura and the users browser.

Later on readers will want other exports in different formats I’m sure - CSVs, RSS feeds, json representations, maybe a Google Sheet sync - but for an MVP this will hopefully get people asking for what they want specifically.