Developer systems

Developer systems are the interfaces between the software you author and the Campus platform.

System	Use it when
CampusSDK	Existing browser, native, backend, or agent software needs typed access to CampusOS and installation services.
Campus UI	You are constructing a Campus-native human interface with shared semantics, states, and interaction patterns.
Campus Harness	You are building a persistent agent, app-specific assistant, or isolated worker with explicit tools and lifecycle.

They compose naturally: a Campus UI calls CampusSDK; a Harness agent exposes or consumes admitted MCP tools; all three ship inside the same application package when needed.