--- title: Practical Kotlin Multiplatform: Creating the Firebase... description: A step-by-step guide to building a Firebase Authentication remote store using Kotlin Multiplatform and Ktor. Covers setting up the AuthenticationRemote class... canonical: https://daily.dev/posts/practical-kotlin-multiplatform-creating-the-firebase-auth-remote-store-with-ktor-z18pllgtl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Practical Kotlin Multiplatform: Creating the Firebase Auth Remote Store with Ktor | daily.dev og:description: A step-by-step guide to building a Firebase Authentication remote store using Kotlin Multiplatform and Ktor. Covers setting up the AuthenticationRemote class... og:url: https://daily.dev/posts/practical-kotlin-multiplatform-creating-the-firebase-auth-remote-store-with-ktor-z18pllgtl og:image: https://api.daily.dev/og/posts/Z18PllGtL.png og:image:alt: Practical Kotlin Multiplatform: Creating the Firebase Auth Remote Store with Ktor og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Practical Kotlin Multiplatform: Creating the Firebase Auth Remote Store with Ktor **[Joe Birch](https://daily.dev/sources/joebirch)** · 8 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to building a Firebase Authentication remote store using Kotlin Multiplatform and Ktor. Covers setting up the AuthenticationRemote class with dependency-injectable HttpClient, configuring Ktor's ContentNegotiation plugin for JSON serialization, defining Firebase REST API base URLs, and modeling both success and failure authentication response data classes with Kotlin Serialization. The approach avoids platform-specific SDKs, keeping the auth layer portable across Android and iOS. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Practical Kotlin Multiplatform: Implementing the Firebase Sign-up Operation with Ktor](https://daily.dev/posts/practical-kotlin-multiplatform-implementing-the-firebase-sign-up-operation-with-ktor-jddicwq8t) · Joe Birch · 0 upvotes · 0 comments - [Practical Kotlin Multiplatform: Setting up the Kotlin Multiplatform Networking Module with Ktor](https://daily.dev/posts/practical-kotlin-multiplatform-setting-up-the-kotlin-multiplatform-networking-module-with-ktor-z7mvnl8di) · Joe Birch · 0 upvotes · 0 comments - [Introducing the Auth0 SDK for Kotlin Multiplatform](https://daily.dev/posts/introducing-the-auth0-sdk-for-kotlin-multiplatform-0eqwadhtn) · Auth0 · 0 upvotes · 0 comments - [Building a Real-World Kotlin Multiplatform TV Shows App](https://daily.dev/posts/building-a-real-world-kotlin-multiplatform-tv-shows-app-7wrjfcriy) · Medium · 0 upvotes · 0 comments - [An Android auth architecture with encrypted tokens, auto-refresh, and reactive navigation](https://daily.dev/posts/an-android-auth-architecture-with-encrypted-tokens-auto-refresh-and-reactive-navigation-wwm3gd3dy) · ProAndroidDev · 0 upvotes · 0 comments --- Tags: [#kotlin](https://daily.dev/tags/kotlin), [#firebase](https://daily.dev/tags/firebase), [#ktor](https://daily.dev/tags/ktor) [View this post on daily.dev](https://daily.dev/posts/practical-kotlin-multiplatform-creating-the-firebase-auth-remote-store-with-ktor-z18pllgtl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Practical Kotlin Multiplatform: Creating the Firebase Auth Remote Store with Ktor","url":"https://daily.dev/posts/practical-kotlin-multiplatform-creating-the-firebase-auth-remote-store-with-ktor-z18pllgtl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/practical-kotlin-multiplatform-creating-the-firebase-auth-remote-store-with-ktor-z18pllgtl"},"datePublished":"2026-07-18T15:37:35.162Z","dateModified":"2026-07-18T15:43:53.845Z","description":"A step-by-step guide to building a Firebase Authentication remote store using Kotlin Multiplatform and Ktor. 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