> For the complete documentation index, see [llms.txt](https://docs.multiset.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.multiset.ai/web-sdk/webxr-sdk/api-reference.md).

# API Reference

Full parameter and callback reference for all WebXR SDK classes

| Class                                                                    | Entry Point              | Description                                                                                         |
| ------------------------------------------------------------------------ | ------------------------ | --------------------------------------------------------------------------------------------------- |
| [MultisetClient](/web-sdk/webxr-sdk/api-reference/multisetclient.md)     | `@multisetai/vps/core`   | HTTP client for authentication and localization requests                                            |
| [XRSessionManager](/web-sdk/webxr-sdk/api-reference/xrsessionmanager.md) | `@multisetai/vps/core`   | Owns the WebXR session lifecycle, frame loop, and camera capture                                    |
| [ThreeAdapter](/web-sdk/webxr-sdk/api-reference/threeadapter.md)         | `@multisetai/vps/three`  | Wires session to a Three.js renderer                                                                |
| [NeedleAdapter](/web-sdk/webxr-sdk/api-reference/needleadapter.md)       | `@multisetai/vps/needle` | Wires session to Needle Engine                                                                      |
| [MapSpace](/web-sdk/webxr-sdk/api-reference/mapspace.md)                 | `@multisetai/vps/three`  | The map coordinate frame. Nest content under it and a child's local position is its map coordinate. |
| [MapAnchor](/web-sdk/webxr-sdk/api-reference/mapanchor.md)               | `@multisetai/vps/needle` | Needle Engine component that positions a GameObject at a map coordinate                             |


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