Supabase KMP

What is this?

Supabase is a hosted backend — a database, user accounts, file storage and live updates — that your app talks to over the internet. Supabase KMP is the Kotlin library that does that talking for you.

Instead of hand-writing HTTP requests, parsing JSON and worrying about expired logins, you call normal Kotlin functions:

val client = Supabase.create(
    projectUrl = "https://your-project.supabase.co",
    apiKey = "your-anon-key",
)
 
val auth = createAuthClient(client)
val session = auth.signInWithEmail("user@example.com", "secure-password")

Because it’s Kotlin Multiplatform, you write that code once and run it on Android, iPhone, desktop, the web, and more — the same logic, every platform.

Why Supabase KMP

• Typed end to end — a SupabaseResult monad, value-class IDs and a PostgREST filter DSL. No stringly-typed surprises.
• One codebase, every platform — share auth, data and realtime logic across mobile, desktop and web.
• Local JWT verification — getClaims() verifies asymmetric tokens on-device against the JWKS, no server round-trip.
• Native sign-in, your way — optional Google & Apple modules built on a pluggable NativeAuthProvider; bring your own for anything else.
• Built for production — configurable retry with exponential backoff, a NETWORK error category for offline UI, and suspend observability hooks for tracing and metrics.
• Bring-your-own everything — pluggable session storage, HTTP engine and crypto. Nothing heavy is bundled behind your back.

Start here

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