Horizon Platform SDK - Android/Kotlin Integration Guide

When to Use

Use this skill when a developer:

• Wants to integrate any Horizon Platform SDK feature in a Meta Quest 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).

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.