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Unbound exposes a set of modules for building addons: finding Discord’s internals, persisting settings, localizing strings, showing toasts, and more. Together they’re the Developer API. Every module is published in the @unbound-app/api package. Import what you need by name, and if you prefer, each module is also a subpath. The whole surface mirrors the unbound global at runtime. 
import { metro, storage } from '@unbound-app/api';
// equivalent: import metro from '@unbound-app/api/metro';
// runtime global: unbound.metro
Metro is the foundation. Almost everything else (assets, i18n, stores, your own addons) locates Discord’s modules through it first. If you’re new here, start there.

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Modules

Metro

Locate the exact Discord module you need before you patch it.

Storage

Reactive, persisted settings: read, write, and re-render on change.

Assets

Discover Discord’s bundled images and icons by name.

Native

Bridge to the app’s native iOS and Android modules.

Toasts

Show transient, non-blocking notifications.

i18n

Localize your addon to the user’s Discord language.

File System

Read, write, and check files against the documents directory.

Managers

How plugins and themes are loaded, started, and persisted.