| Application Key | A key required to authenticate SDK connections. Managed in Account Settings > Developer Tools. |
| Camera | The virtual camera representing the end user's viewpoint in the Space — including position, rotation, zoom, and field of view. Managed through the Camera namespace. |
| GraphQL | The query language used by Matterport's APIs. Allows declarative queries to fetch exactly the data needed in a single request. Learn more. |
| Label | A text label positioned within the 3D space, managed through the Label namespace. |
| Mattertag | The legacy term for Tag. The Mattertag namespace is deprecated — use Tag instead. See Migrating from Mattertags. |
| Measurement | Distance and area measurement data captured within a Space, accessible through the Measurements namespace. |
| Mode | The user's current viewing perspective in Showcase: Inside View, 360° View, Dollhouse View, Floorplan View, or Transitioning. |
| Model | The 3D data representing a Space. In API contexts, "model" typically refers to the data entity you query and manipulate. |
| Namespace | A top-level grouping of related SDK functionality (e.g. Camera, Floor, Scene, Tag). Each namespace provides properties, methods, types, and enumerations. |
| OAuth | An authentication protocol used by partners to authorize access to private models. See OAuth documentation. |
| Observable | A reactive value that can be subscribed to for change notifications. Used throughout the SDK for real-time state updates. See Using Observables. |
| Pano / Sweep | A panoramic capture point within a Space where a user can stand and look around. A pano refers to the 2D imagery; a sweep refers to the 3D scan location. |
| PME (Private Model Embed) | A feature for Enterprise customers that enables embedding private Matterport models that require authentication. See Private Model Embed. |
| Position | The absolute X, Y, and Z coordinates of a point within the Space. Learn more about coordinate conventions. |
| Showcase | The Matterport 3D viewer application that renders and presents Spaces to end users. |
| SID | A short alphanumeric identifier (typically 11 or 22 characters) used throughout the SDK to identify resources such as panos, tags, and models. This is the preferred identifier format. |
| Space | A Matterport-captured environment — a building, room, or outdoor area that has been scanned and processed into an interactive 3D experience. |
| Tag | An interactive annotation positioned within a Space. Tags can contain text, media, and links. Managed through the Tag namespace. |
| Transition | The visual effect when moving between panos. Options include Fly-through (smooth flight between panos), Fade (fade to black between panos), and Instant (immediate switch with no animation). |
| View/Layer | A saved configuration of visible content within a Space, determining which tags, labels, and other data are displayed. Grouped by layers. |