The CodeAssist platform substrate the plugin SPI exposes: extension points, scoped services, the message bus, logging, and the settings model.

The CodeAssist language SPI: the neutral syntax tree, resolution, file types, completion, formatting, folding, and a language's compilation context.

The CodeAssist virtual file system, which the other SPI artifacts expose.

The CodeAssist project model: module types, project templates, facets and their codecs, and file icons.

The CodeAssist build SPI: build systems, build plugins, source generators, and run tasks.

The CodeAssist interpreter SPI: lowering a project's Kotlin and running it, or its compiled classes, from a plugin, for a preview or a run of the plugin's own.

The CodeAssist plugin SPI: the Plugin entry point, its manifest, the registration API, and the action model.

The CodeAssist plugin UI SPI: what a plugin implements to contribute a tool window, a screen, or an overlay, and the context those bodies render against.

The CodeAssist version-control SPI: the repository, branch, commit and status model, the provider extension point a checkout is resolved through, and the account, credential and forge ports a sign-in flow is built on.