Horizon API Upgrade Skill
When to Use
Use this skill when:
- Upgrading an existing Quest application to a newer Horizon OS SDK version
- Fixing deprecated API warnings or compilation errors after an SDK update
- Migrating between major API versions (e.g., VrApi to OpenXR)
- Understanding what changed between SDK releases
- Planning an upgrade path for a project that has fallen behind on SDK versions
General Upgrade Workflow
Every SDK upgrade, regardless of platform, follows the same high-level process:
1. Identify Current SDK Version
Determine what version the project currently targets:
- Unity: Check or the Package Manager UI for package versions
- Unreal: Check the Meta XR Plugin version in files or the Plugins browser
- Spatial SDK / Android: Check or for dependency versions
- Web / IWSDK: Check for or package versions
2. Check the API Changelog
Before upgrading, review what changed between your current version and the target version. See references/api-changelog.md for a summary of recent changes.
Use the device hub to search documentation:
bash
metavr docs search "release notes v72"
metavr docs search "migration guide openxr"
3. Update SDK Dependencies
Update the version numbers in your project configuration:
- Unity: Update via Package Manager or edit directly
- Unreal: Download and install the new plugin version
- Gradle projects: Bump version strings in
- npm projects: Run or edit
4. Fix Deprecated API Calls
After updating, compile the project and address errors and warnings. See references/deprecation-guide.md for common replacements.
bash
# Search project for known deprecated APIs
grep -rn "vrapi_" --include="*.c" --include="*.cpp" --include="*.h" src/
grep -rn "OVRManager" --include="*.cs" Assets/
5. Test on Device
Deploy and verify functionality on a connected Quest device:
bash
metavr app install ./build/output.apk
metavr app launch com.yourcompany.yourapp
6. Run Performance Check
Ensure the upgrade did not introduce performance regressions:
Platform-Specific Upgrade Paths
Unity: Meta XR SDK
The Meta XR SDK for Unity is distributed as UPM packages. Upgrades are performed through the Unity Package Manager. Key packages include
,
com.meta.xr.sdk.interaction
, and
.
See references/sdk-migration.md for the step-by-step Unity upgrade guide.
Unreal Engine: Meta XR Plugin
The Meta XR Plugin for Unreal is distributed as an engine plugin. Upgrades involve downloading the new plugin version and regenerating project files.
See references/sdk-migration.md for the step-by-step Unreal upgrade guide.
Android / Spatial SDK
The Meta Spatial SDK is distributed as Gradle dependencies. Upgrades involve bumping version numbers in your Gradle build files.
See references/sdk-migration.md for the step-by-step Spatial SDK upgrade guide.
Web / IWSDK
The Immersive Web SDK is distributed as npm packages. Upgrades involve updating package versions in
.
See references/sdk-migration.md for the step-by-step IWSDK upgrade guide.
Common Upgrade Issues
Namespace Changes
Meta has progressively moved from
and
namespaces to
namespaces. After an upgrade, you may see compilation errors due to renamed classes or moved packages.
Removed APIs
APIs that were deprecated in previous versions may be fully removed in newer versions. If you skipped intermediate upgrades, you may encounter missing symbols. Always upgrade incrementally.
New Required Permissions
Newer Horizon OS versions may require additional permissions in your
. Common additions include:
com.oculus.permission.HAND_TRACKING
horizonos.permission.HEADSET_CAMERA
- New entries for feature declarations
Manifest Changes
Newer SDK versions may require updated
entries in
, such as
com.oculus.supportedDevices
or updated
values.
Android SDK Targeting Requirement
New binary uploads for Meta Horizon apps must set
within the supported range.
What's required
- Set to API level 32-34 for immersive apps (or 32-36 for 2D panel apps)
- can remain at API level 32
- Applies to all new binary uploads for both new and existing apps
- Existing published apps continue to work without changes
How to update
Unity: Use the Project Setup Tool in the Meta XR SDK -- it can update API versions automatically. Or manually set in Player Settings -> Other Settings -> Target API Level.
Unreal: Use the Project Setup Tool in the Meta XR Plugin. Or set in Project Settings -> Android -> Target SDK Version.
Gradle (Spatial SDK / Native):
groovy
android {
defaultConfig {
targetSdkVersion 34 // 32-34 for immersive, 32-36 for 2D panel apps
minSdkVersion 32
}
}
Using metavr for Documentation Lookup
The
tool provides documentation search to help during upgrades. Invoke via
(published as the npm package
; if
is not on PATH, run
) — no global install needed.
bash
# Search for migration-related documentation
metavr docs search "migration guide"
metavr docs search "deprecated API"
metavr docs search "breaking changes v73"
# Search for specific API replacements
metavr docs search "OVRManager replacement"
metavr docs search "vrapi openxr migration"
References
- Deprecation Guide -- Common deprecated APIs and their replacements
- SDK Migration Guide -- Step-by-step platform-specific migration instructions
- API Changelog -- Summary of changes across recent SDK versions