Dependencies

Directed edges between items — what this needs, what it recommends, and what it must never be installed alongside.

A dependency is a directed edge from one content item to another: “A depends on B”. Both ends can be a mod, an asset, a server, a community, a collection or a group.

The four kinds

Kind Means
Required The source does not function without the destination. The default.
Optional It works without it, but there is a reason to have both.
Recommended Stronger than optional — the author suggests it.
Conflict The two must not be installed together.

Each edge can also carry notes — markdown, for the cases where the type is not the whole story (“required only if you are using the server build”).

Collections as dependency carriers

A collection can sit on either end, and that is deliberate: a collection exists to carry a mass list of dependencies. Rather than declaring twelve edges on a mod, declare one on a collection that holds twelve items.

Repeated edges are a no-op

Adding the same edge twice updates it rather than duplicating it. Each (source kind, destination kind) combination is constrained separately, so a mod depending on both a mod and an asset is two edges, and neither collides with the other.

Through the API

Dependencies are managed on the item’s Dependencies tab. They are not currently exposed as an API relation sub-resource — see the availability table for what is.