To grap for movies, use

/library/sections/4/all?type=1&lastViewedAt%3E%3E=1970-01-01&X-Plex-Container-Start=0&X-Plex-Container-Size=50&excludeElements=Genre,Director,Writer,Country,Role,Producer,Collections,Media&excludeFields=summary,tagline,rating,contentRating,audienceRatingImage,file

Look for viewOffset for items in progress, that we need to handle specific