Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/meta-quest/agentic-toolsnpx agentmods add skills/meta-quest/agentic-tools/hz-api-upgradeWrote 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-api-upgrade)<a href="https://agentmods.dev/skills/meta-quest/agentic-tools/hz-api-upgrade"><img src="https://agentmods.dev/badge/skills/meta-quest/agentic-tools/hz-api-upgrade/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-api-upgrade"><img src="https://agentmods.dev/badge/skills/meta-quest/agentic-tools/hz-api-upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 157 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00061 | $0.01594 |
| Opus 5.5 | $0.00024 | $0.00638 |
| Sonnet 5.5 | $0.00012 | $0.00319 |
| Haiku 4.5 | $0.00006 | $0.00159 |
Grade A, and why
hz-api-upgrade 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 29d 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 — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Horizon API Upgrade Skill
For Unity projects using the Meta XR SDK, use the dedicated
hz-unity-sdk-upgrade skill. Continue
here for Unreal, native Android or Spatial SDK, Web or IWSDK, and general
cross-platform upgrade planning.
When to Use
Use this skill when:
- Upgrading an existing Meta VR 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
Packages/manifest.jsonor the Package Manager UI forcom.meta.xr.*package versions - Unreal: Check the Meta XR Plugin version in
.upluginfiles or the Plugins browser - Spatial SDK / Android: Check
build.gradleorbuild.gradle.ktsforcom.meta.spatial:*dependency versions - Web / IWSDK: Check
package.jsonfor@meta-spatial-sdk/*or@iwsdk/*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:
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
manifest.jsondirectly - Unreal: Download and install the new plugin version
- Gradle projects: Bump version strings in
build.gradle - npm projects: Run
npm updateor editpackage.json
4. Fix Deprecated API Calls
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.
- 29d ago Changed · +5 lines · +23 tokens per session d93580a593bc
- 1mo ago First seen · 175 lines · 38 tokens per session scan A 08e2f51ecd65
hz-api-upgrade is a skill published in the GitHub repository meta-quest/agentic-tools (231 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 61 tokens to every session and 1,594 once invoked, about $0.0002 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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