--- title: Announcing Connect-Kotlin: Connect is now fully... description: Buf has released Connect-Kotlin, a new library bringing the Connect protocol to Kotlin and Android, joining existing support for Swift (iOS), Web, and Go. It... canonical: https://daily.dev/posts/announcing-connect-kotlin-connect-is-now-fully-supported-on-mobile-buf-o7zzwj3nc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Announcing Connect-Kotlin: Connect is now fully supported on mobile! · Buf | daily.dev og:description: Buf has released Connect-Kotlin, a new library bringing the Connect protocol to Kotlin and Android, joining existing support for Swift (iOS), Web, and Go. It... og:url: https://daily.dev/posts/announcing-connect-kotlin-connect-is-now-fully-supported-on-mobile-buf-o7zzwj3nc og:image: https://api.daily.dev/og/posts/O7zZwJ3nc.png og:image:alt: Announcing Connect-Kotlin: Connect is now fully supported on mobile! · Buf 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. # Announcing Connect-Kotlin: Connect is now fully supported on mobile! · Buf **[Buf Blog](https://daily.dev/sources/buf)** · 4 min read · 0 upvotes · 0 comments ## Summary Buf has released Connect-Kotlin, a new library bringing the Connect protocol to Kotlin and Android, joining existing support for Swift (iOS), Web, and Go. It generates idiomatic typed APIs from a single Protobuf schema, integrates with the Buf CLI for remote code generation, uses OkHttp for flexibility, and supports the Connect, gRPC, and gRPC-Web protocols. The library is currently in beta, with a getting-started guide for building a chat app in about 10 minutes, example projects, and open-source code on GitHub. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Is there a Kotlin implementation of the Connect protocol for Android? Yes, Connect-Kotlin brings the Connect protocol to Kotlin and Android, giving Connect full first-class support on mobile alongside Connect-Swift for iOS. It generates idiomatic, typed APIs from a Protobuf schema, integrates with the Buf CLI for remote code generation, uses OkHttp under the hood, and supports the Connect, gRPC, and gRPC-Web protocols. It launched in beta. _daily.dev surfaces releases like Connect-Kotlin for teams standardizing cross-platform API tooling._ ### What Protobuf code generators does Connect-Kotlin support? Connect-Kotlin supports Google's Java Protobuf generator (protoc-gen-java, including the javalite option) and Google's Kotlin Protobuf generator (protoc-gen-kotlin, including the kotlinlite option), with support for the square/wire generator planned as a future addition. _Developers choosing a protobuf toolchain for Kotlin can track library updates like this on daily.dev._ ## Similar posts on daily.dev - [connect-rust joins the Connect project · Buf](https://daily.dev/posts/connect-rust-joins-the-connect-project-buf-apuqzc6s4) · Buf Blog · 5 upvotes · 0 comments - [ConnectRPC: Generate Typed SDKs from Your GraphQL API](https://daily.dev/posts/connectrpc-generate-typed-sdks-from-your-graphql-api-cgx6z8ayk) · WunderGraph · 9 upvotes · 0 comments - [gRPC vs REST Is the Wrong Question · Buf](https://daily.dev/posts/grpc-vs-rest-is-the-wrong-question-buf-xe2qehlxz) · Buf Blog · 109 upvotes · 4 comments - [Kotlin Weekly \#523](https://daily.dev/posts/kotlin-weekly-523-kmaj85ghy) · Kotlin Weekly · 0 upvotes · 0 comments - [gRPC-Web Failed the Web · Buf](https://daily.dev/posts/grpc-web-failed-the-web-buf-yxi6aoslo) · Buf Blog · 51 upvotes · 8 comments --- Tags: [#android](https://daily.dev/tags/android), [#backend](https://daily.dev/tags/backend), [#kotlin](https://daily.dev/tags/kotlin), [#grpc](https://daily.dev/tags/grpc) [View this post on daily.dev](https://daily.dev/posts/announcing-connect-kotlin-connect-is-now-fully-supported-on-mobile-buf-o7zzwj3nc) ```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":"Announcing Connect-Kotlin: Connect is now fully supported on mobile! · Buf","url":"https://daily.dev/posts/announcing-connect-kotlin-connect-is-now-fully-supported-on-mobile-buf-o7zzwj3nc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/announcing-connect-kotlin-connect-is-now-fully-supported-on-mobile-buf-o7zzwj3nc"},"datePublished":"2026-08-23T07:20:11.788Z","dateModified":"2026-08-23T07:21:47.005Z","description":"Buf has released Connect-Kotlin, a new library bringing the Connect protocol to Kotlin and Android, joining existing support for Swift (iOS), Web, and Go. 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