A CLI that imports data from ghost to contentful.
npm install -g contentful-ghost-importer
The CLI takes care of creating the necessary content types (Post, Tag, User) as well as of importing all posts, tags and users from the ghost export into Contentful.
contentful-ghost-importer -s <spaceId> -t <cmaToken> path/to/ghost-data.json
Before running the importer you will need to log into your ghost admin interface and download all your data as JSON file. You can find instructions about how to achieve that in the ghost support section.