Android Hidden API and R8 Check
gkd-kit/gkd
Checks whether Android hidden-API implementations and system callbacks survive R8 minification, and diagnoses Release-only failures such as AbstractMethodError.
Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset…
Install Hz Platform SDK
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install meta-quest/agentic-tools hz-platform-sdk --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/hz-platform-sdk .claude/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .claude/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdkType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install meta-quest/agentic-tools hz-platform-sdk --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/hz-platform-sdk .agents/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .agents/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install meta-quest/agentic-tools hz-platform-sdk --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/hz-platform-sdk .cursor/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .cursor/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/meta-quest/agentic-tools.git --path skills/hz-platform-sdk--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install meta-quest/agentic-tools hz-platform-sdk --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/hz-platform-sdk .gemini/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .gemini/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install meta-quest/agentic-tools hz-platform-sdkInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/hz-platform-sdk .github/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .github/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install meta-quest/agentic-tools hz-platform-sdk --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/meta-quest/agentic-tools.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/hz-platform-sdk .opencode/skills/hz-platform-sdk && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "hz-platform-sdk" agent skill from https://github.com/meta-quest/agentic-tools/tree/main/skills/hz-platform-sdk into .opencode/skills/hz-platform-sdk/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hz-platform-sdk", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
hz-platform-sdk- GitHub stars
- 213
- Token cost
- ~1k tokens
- SKILL.md length
- 379 words
- Files
- 19 (incl. references)
- Skills in repo
- 34
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset…
- Works in 3 steps: First, read references/common-setup.md… → Then, read the specific reference file… → For exact signatures, query the API…
- Tasks that involve Android development
- SKILL.md covers When to Use, Quick Start, Available APIs and How to Use
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Hz Platform SDK is an agent skill from meta-quest/agentic-tools. Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset files, application lifecycle, consent, device integrity, language packs, user age categories, and rate and review. Covers setup, initialization, API usage, data types, error handling, and best practices for all 17 public platform SDK packages. Build paths: Standard Android and Meta Spatial SDK; use hz-psdk-integration…
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 19 other files, including reference files (for example `references/abuse-report.md`, `references/achievements.md` and `references/application-lifecycle.md`).
It sits in Mobile, covering Android development. It works with Android, Kotlin and C#. The repository describes itself as: Agent Skills for Meta Quest/Horizon OS VR Development. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Android development
Example prompts
- “Use the hz-platform-sdk skill to guide integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP…”
- “/hz-platform-sdk”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- First, read references/common-setup.md for shared setup instructions, initialization code, and common status codes that apply to all APIs.
- Then, read the specific reference file for the API you need (e.g., references/iap.md for in-app purchases).
- For exact signatures, query the API index instead of guessing: metavr docs api-search " ", then metavr docs api-details for the full entry.
What it can do on your machine
Read from SKILL.md and the folder at commit 3a8553d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
developers.meta.comcentral.sonatype.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Hz Platform SDK loads about 1k tokens when it runs, and up to ~74k if it reads all its reference files. Until then it costs about 161 tokens; SKILL.md has 379 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from meta-quest/agentic-tools at commit 3a8553d, republished under its Apache-2.0 licence (© meta-quest). 379 words, ~1,018 tokens.
Download SKILL.mdSave it as
.claude/skills/hz-platform-sdk/SKILL.md (or your agent's skills folder). This skill also uses 18 other files; get the full folder from GitHub.- name
- hz-platform-sdk
- description
- Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset files, application lifecycle, consent, device integrity, language packs, user age categories, and rate and review. Covers setup, initialization, API usage, data types, error handling, and best practices for all 17 public platform SDK packages. Build paths: Standard Android and Meta Spatial SDK; use hz-psdk-integration for guided integration, hz-unity-platform-sdk for Unity/C#, and hz-quest-verify-first if the path is unclear.
- license
- Apache-2.0
Horizon Platform SDK - Android/Kotlin Integration Guide
This is the API-reference skill for the Standard Android and Meta Spatial SDK
Android/Kotlin build paths.
For a guided codebase-analysis and integration workflow, use
hz-psdk-integration. For Unity/C#, use hz-unity-platform-sdk instead.
When to Use
Use this skill when a developer:
- Wants to integrate any Horizon Platform SDK feature in a Meta VR Android/Kotlin application
- Asks about setup, initialization, or dependencies for the SDK
- Needs help with a specific public platform API (achievements, IAP, users, etc.)
- Is troubleshooting errors or status codes from any SDK package
- Asks about HorizonServiceConnection, entitlements, or HzPlatformService
Quick Start
- Setup guide: https://developers.meta.com/horizon/documentation/android-apps/ps-setup-kotlin
- Maven artifacts: https://central.sonatype.com/search?namespace=com.meta.horizon.platform.sdk
Available APIs
| Feature | Reference | Description |
|---|---|---|
| Abuse Report | abuse-report | Listen for report button events in the system panel |
| Achievements | achievements | Unlock, track progress, and query simple/count/bitfield achievements |
| Application | application | Get app version, launch other apps, manage self-update downloads |
| Application Lifecycle | application-lifecycle | Detect launch type, handle deeplinks, log deeplink results |
| Asset File | asset-file | List, download, cancel, and delete downloadable asset files (DLC) |
| Consent | consent | Check and launch user consent flows |
| Device Application Integrity | device-application-integrity | Verify device and app integrity tokens |
| Entitlements | entitlements | Verify app purchase legitimacy and user authorization |
| Group Presence | group-presence | Set/clear presence, manage sessions, send invites, launch panels |
| In-App Purchases (IAP) | iap | Retrieve products, purchase history, checkout flow, consume purchases |
| Language Pack | language-pack | Get/set language packs, track localization downloads |
| Leaderboards | leaderboards | Retrieve leaderboard info, fetch/write entries with filtering |
| Notifications | notifications | Send device notifications with actions and icons |
| Rate and Review | rate-and-review | Check eligibility and launch the rating/review UI |
| Rich Presence | rich-presence | Set/clear rich presence status and destinations (deprecated; prefer group-presence) |
| User Age Category | user-age-category | Query user age group and report age categories |
| Users | users | Retrieve user profiles, friends, access tokens, identity verification |
Show full SKILL.md (93 more words)Show less
How to Use
- First, read
references/common-setup.mdfor shared setup instructions, initialization code, and common status codes that apply to all APIs. - Then, read the specific reference file for the API you need (e.g.,
references/iap.mdfor in-app purchases). - For exact signatures, query the API index instead of guessing:
metavr docs api-search "<feature> <operation>", thenmetavr docs api-details <entry>for the full entry.
Each reference file contains only the package-specific content: API operations, data types, examples, and package-specific notes. The common setup and error codes are centralized in common-setup.md to avoid duplication.
© meta-quest, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 18 other files (references) in skills/hz-platform-sdk of meta-quest/agentic-tools.
- SKILL.md
- references/abuse-report.md
- references/achievements.md
- references/application-lifecycle.md
- references/application.md
- references/asset-file.md
- references/common-setup.md
- references/consent.md
- references/device-application-integrity.md
- references/entitlements.md
- references/group-presence.md
- references/iap.md
- references/language-pack.md
- references/leaderboards.md
- references/notifications.md
- references/rate-and-review.md
- references/rich-presence.md
- references/user-age-category.md
- references/users.md
Open the folder on GitHubat commit 3a8553d
Compare with similar skills
Hz Platform SDK next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Hz Platform SDK this skillmeta-quest/agentic-tools | 213 | — | ~1k | Automated safety check: Pass | Apache-2.0 | |
| Android Hidden API and R8 Checkgkd-kit/gkd | 43k | — | ~1.5k | Automated safety check: Pass | GPL-3.0 | |
| Build Teaql Appteaql/teaql-agent-kit | 2.8k | — | ~4.6k | Automated safety check: Pass | MIT | |
| Compose Multiplatform Patternsmonta-app/ocpp-emulator | 180 | 5 repos | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Android Developmentdpconde/claude-android-skill | 336 | — | ~1.7k | Automated safety check: Pass | MIT | |
| Architecture Overclocknekomangaorg/Neko | 2.8k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Hz Platform SDK
What does Hz Platform SDK do?
Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset…. Hz Platform SDK is an agent skill from meta-quest/agentic-tools. Guides integration of the Horizon Platform SDK for Meta VR and Horizon OS Android/Kotlin apps — achievements, IAP, users, leaderboards, presence, notifications, abuse reporting, entitlements, asset files, application lifecycle, consent, device integrity, language packs, user age categories, and rate and review.
When should I use Hz Platform SDK?
Hz Platform SDK fits situations like: tasks that involve Android development.
How do I install Hz Platform SDK in Claude Code?
Run `npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a claude-code`. Or copy the skill folder (skills/hz-platform-sdk in meta-quest/agentic-tools) into .claude/skills/hz-platform-sdk in your project. Claude Code loads it when a task matches its description.
How do I install Hz Platform SDK in Codex?
Run `npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a codex`. Or copy the skill folder (skills/hz-platform-sdk in meta-quest/agentic-tools) into .agents/skills/hz-platform-sdk in your project. Codex loads it when a task matches its description.
Can I use Hz Platform SDK in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add meta-quest/agentic-tools --skill hz-platform-sdk -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hz-platform-sdk, .gemini/skills/hz-platform-sdk, .github/skills/hz-platform-sdk and .opencode/skills/hz-platform-sdk in your project.
What does Hz Platform SDK need to run?
SKILL.md names no scripts, command-line tools or credentials: Hz Platform SDK is instructions for the agent only.
Does Hz Platform SDK access the network?
SKILL.md names 2 domains. As links in the text: developers.meta.com and central.sonatype.com. This is read from the text; nothing was executed.
Is Hz Platform SDK safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Hz Platform SDK use?
Hz Platform SDK is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Hz Platform SDK use?
About 1k tokens (SKILL.md is roughly 4.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 73k tokens, read only when the agent opens those files.
What are the alternatives to Hz Platform SDK?
Skills that share tags, products or a category with Hz Platform SDK: Android Hidden API and R8 Check (gkd-kit/gkd, 43k stars), Build Teaql App (teaql/teaql-agent-kit, 2.8k stars), Compose Multiplatform Patterns (monta-app/ocpp-emulator, 180 stars) and Android Development (dpconde/claude-android-skill, 336 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Hz Platform SDK?
meta-quest (a GitHub organization) maintains it in meta-quest/agentic-tools, which has 213 GitHub stars. The repository holds 34 skills in this directory. The repository was last updated on September 24, 2026.
Source: meta-quest/agentic-tools on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.