Domains API

the functional (flat) API domain.action It is a public interface bundled into a form. The functional API can be used as is, and the domain interface additionally provides the same implementation grouped by domain.

The document structure follows this directory structure exactly — REFERENCE.md in the domain directory is the overview, domain/member/REFERENCE.mdis the member details.

Domain list

Domain	Description
Ads	Interstitial, AdMob, and banner ads
Analytics	Analytics logs and screen logging
Clipboard	Clipboard read/write
Device	Device, permissions, location, and media
Environment	Runtime environment, version, and network
File	File saving and PDF viewer
Game	Game Center leaderboard and profile
IAP	In-app purchases
Migration	Web origin storage migration
Notification	Notification consent
Permissions	Device permission lookup and requests
Promotion	Promotional rewards and friend invites
Review	Request in-app reviews
SafeArea	Safe Area insets lookup and subscription
Screen	Screen control
Share	Share links and share sheets
Storage	Local storage
TossAuth	Toss Login and signature
TossPay	Toss Pay payment authentication
User	User key, consent data, and age

Relationship with the functional API

// Function-style (flat) API — same as v2
import { getAnonymousKey } from "@apps-in-toss/web-framework";
await getAnonymousKey();

// Domain interface — same implementation as domain.action
import { User } from "@apps-in-toss/web-framework";
await User.getAnonymousKey();

When calling a domain member in an unsupported Toss app version undefinedwithout returning UNSUPPORTED_APP_VERSION an error throwit does (the functional API keeps the existing v2 behavior as is). That member can be isSupported()checked in advance with