What is Smithy Kotlin client code generation?

It's a tool that auto-generates type-safe Kotlin client libraries from Smithy service models, handling serialization, protocols, and errors automatically.

How do I generate a Smithy Kotlin client?

Install the Smithy Kotlin CLI or Gradle plugin, define your service model, run `smithy kotlin-codegen client`, and integrate the output into your project — full guide in the docs.

Does Smithy Kotlin work with non-AWS services?

Absolutely — it's model-driven and protocol-agnostic, perfect for any HTTP/REST/gRPC setup, not just AWS.

🚀 New Releases

Smithy Kotlin Client Gen Goes GA: Auto-Building Type-Safe API Clients

Smithy Kotlin's client code generation just went GA, promising to kill the drudgery of hand-coding API clients. It's model-driven magic that keeps your Kotlin libs in lockstep with evolving services.

theAIcatchup Apr 10, 2026 4 min read

Generated Kotlin client code example from Smithy model in IDE

⚡ Key Takeaways

Smithy Kotlin client code gen is now GA, automating type-safe clients from service models to eliminate API drift. 𝕏
Model-driven approach generates serializers, protocols, and error handling, integrating smoothly with Kotlin/JVM ecosystems. 𝕏
Echoes gRPC/protobuf shifts; poised to standardize Kotlin client gen, with multiplatform potential ahead. 𝕏

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#API clients #API development #API modeling #Kotlin clients #Kotlin development #Smithy Kotlin #client code generation #code generation

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Originally reported by AWS Developer Blog

⚡ Key Takeaways

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