Ents is in maintenance mode. We're open to taking PRs, and will make sure it doesn't break. There will not be active feature development from the Convex team.
Convex Ents are an ergonomic layer on top of the Convex built-in ctx.db API for reading from and writing to the database. They simplify working with relationships between documents, allow specifying unique fields, default values and rules (row level security).
Check out the docs: https://labs.convex.dev/convex-ents