Kayan

Kayan merges base config with optional overrides and generates typed Kotlin values. Shared code reads config directly without platform-specific wiring.

Read the docs Quick start

Why Kayan

Shared code first

No more Android-only BuildConfig. Generated typed object readable from shared Kotlin code across every platform target.

Opinionated merging

One base, external brand overrides, predictable resolution. Keep the app in one repo and pull customer overrides at build time without forking.

Build-time guarantees

Schema ownership lives with the app. Declared keys, missing values, and type mismatches are checked at build time. Use strict validation when unknown keys should fail too.

What you get

Use cases

Gradual migration away from BuildConfig
White-label products with one shared base config
Multi-module builds that share one config file
Target-specific KMP values through expect / actual
Compile-time feature flags and endpoints
Generated JSON Schema and Markdown docs

Schema kinds

string, boolean, int, long, double
stringMap, stringList, stringListMap
enumValue for normalized enum generation
custom adapters for consumer-owned types