Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add meta-quest/agentic-tools --skill hz-unity-meta-mixed-reality-utility-kitgit clone --depth 1 https://github.com/meta-quest/agentic-toolsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/meta-quest/agentic-tools/hz-unity-meta-mixed-reality-utility-kit)<a href="https://agentmods.dev/skills/meta-quest/agentic-tools/hz-unity-meta-mixed-reality-utility-kit"><img src="https://agentmods.dev/badge/skills/meta-quest/agentic-tools/hz-unity-meta-mixed-reality-utility-kit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/meta-quest/agentic-tools/hz-unity-meta-mixed-reality-utility-kit"><img src="https://agentmods.dev/badge/skills/meta-quest/agentic-tools/hz-unity-meta-mixed-reality-utility-kit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00136 | $0.05343 |
| Opus 5.5 | $0.00054 | $0.02137 |
| Sonnet 5.5 | $0.00027 | $0.01069 |
| Haiku 4.5 | $0.00014 | $0.00534 |
Grade A, and why
hz-unity-meta-mixed-reality-utility-kit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 428 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Meta XR Mixed Reality Utility Kit (MR Utility Kit, MRUK, com.meta.xr.mrutilitykit)
The Meta XR Mixed Reality Utility Kit (MR Utility Kit, MRUK) is a Unity package that provides high-level tools on top of the Scene API for building scene-aware Mixed Reality (MR) experiences. It is designed to be used in conjunction with the Meta XR Core SDK. It handles scene data loading and querying, spawning prefabs on real-world surfaces, world locking to prevent anchor drift, environment raycasting for instant placement without scanning, passthrough camera access, NavMesh generation from room geometry, and trackable detection (keyboards, QR codes).
Package: com.meta.xr.mrutilitykit
Finding the SDK Source
The package com.meta.xr.mrutilitykit may be located in different places depending on the project setup:
Library/PackageCache/com.meta.xr.mrutilitykit@<hash>/(cached from registry)Packages/com.meta.xr.mrutilitykit/(local package reference)- A custom on-disk path (embedded or local folder)
Before searching for SDK source, first locate the package root by searching for a known file by filename pattern:
**/com.meta.xr.mrutilitykit*/Core/Scripts/MRUK.cs
Then use the resolved parent path for all subsequent search operations.
Quick Reference
| Task | Class / Component | Source File | Key Entry Point |
|---|---|---|---|
| Load scene from device | MRUK |
Scripts/MRUK.cs |
LoadSceneFromDevice() |
| Load scene from prefab/JSON | MRUK |
Scripts/MRUK.cs |
LoadSceneFromPrefab(), LoadSceneFromJsonString() |
| Get current room | MRUK |
Scripts/MRUK.cs |
GetCurrentRoom() |
| Prevent anchor drift | MRUK |
Scripts/MRUK.cs |
EnableWorldLock = true |
| Query room geometry | MRUKRoom |
Scripts/MRUKRoom.cs |
Raycast(), IsPositionInRoom() |
| Find surfaces / closest point | MRUKRoom |
Scripts/MRUKRoom.cs |
TryGetClosestSurfacePosition(), GenerateRandomPositionOnSurface() |
| Get anchor properties | MRUKAnchor |
Scripts/MRUKAnchor.cs |
Label, PlaneRect, VolumeBounds |
| Spawn prefabs on anchors | AnchorPrefabSpawner |
Scripts/AnchorPrefabSpawner.cs |
PrefabsToSpawn, SpawnOnStart |
| Find random spawn positions | FindSpawnPositions |
Scripts/FindSpawnPositions.cs |
StartSpawn(), SpawnLocations |
| 27-slice mesh resizing | GridSliceResizer |
Scripts/GridSliceResizer.cs |
ResizeTo(Vector3) |
| Generate visual meshes | EffectMesh |
Scripts/EffectMesh.cs |
CreateMesh(), CutHoles |
| Breakable scene geometry | DestructibleGlobalMeshSpawner |
Scripts/DestructibleGlobalMeshSpawner.cs |
CreateOnRoomLoaded |
| GPU distance field texture | SpaceMapGPU |
Scripts/SpaceMapGPU.cs |
GetSpaceMap(), StartSpaceMap() |
| Boundary proximity fade | RoomGuardian |
Scripts/RoomGuardian.cs |
GuardianDistance, GuardianMaterial |
| NavMesh from scene | SceneNavigation |
Scripts/SceneNavigation.cs |
BuildSceneNavMesh() |
| Depth API raycasting | EnvironmentRaycastManager |
Scripts/EnvironmentRaycastManager.cs |
Raycast(), PlaceBox() |
| Passthrough camera images | PassthroughCameraAccess |
Scripts/PassthroughCameraAccess.cs |
GetTexture(), GetCameraPose() |
| Track keyboards / QR codes | MRUKTrackable |
Scripts/MRUKTrackable.cs |
TrackableType, MarkerPayloadString |
| Instant placement (no scan) | PointAndLocate |
Scripts/BuildingBlocks/InstantContentPlacement/ |
TryLocateSpace() |
| Share rooms (multiplayer) | MRUK |
Scripts/MRUK.cs |
ShareRoomsAsync(), LoadSceneFromSharedRooms() |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · +29 lines ffb5cca0c57b
- 1mo ago First seen · 399 lines · 136 tokens per session scan A a68c6eeb7b82
hz-unity-meta-mixed-reality-utility-kit is a skill published in the GitHub repository meta-quest/agentic-tools (236 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 136 tokens to every session and 5,343 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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