Extension Points

Terminology note. "Extensions" in this doc are the framework's sandboxed Alpine.js mini-app primitive (see the extensions skill). They are NOT LLM "tools" (function calls). The slot-system tables are still physically named tool_slots and tool_slot_installs for back-compat — see the table at the bottom of this doc and the "Database & API names" section in the extensions skill.

Mental model

Slots are named React-shaped holes in apps. Extensions are widgets that opt into filling those holes. The framework matches them up by string ID.

Three primitives: