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name: hz-platform-sdk license: Apache-2.0 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."

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

How to Use

1. First, read references/common-setup.md for shared setup instructions, initialization code, and common status codes that apply to all APIs.
2. Then, read the specific reference file for the API you need (e.g., references/iap.md for in-app purchases).
3. For exact signatures, query the API index instead of guessing: metavr docs api-search "<feature> <operation>", then metavr 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.