OptionalallowOptionalisPinned to the author's profile (present only when true; on a profile the pinned post comes first). Absent on older servers.
OptionalhashThe short id used in post links; api.post() takes it as well as id. Absent on older servers.
OptionalquoteThe post quotes this comment: load it with api.getComment() (absent on older servers).
OptionaltopicTopic of the post (absent on older servers).
OptionalplaceOptionalviewsAnonymous view count; only on api.post() (absent on older servers).
posterUrl: a still picture of the video, a plain image URL (absent on older servers).
OptionalscheduledSet on your own scheduled (unpublished) posts.
OptionalcountsPresent on lists and api.post() (counts follow the apps' rules: blocked/banned users excluded).
OptionalviewerGIF attached to the post.
Long posts: content is only the lead; read the rest with api.longForm(id).
The author allows
api.translatePost()(absent on older servers).