Typr: End-to-End Type Safety for JVM Languages

Typr generates type-safe code from your database schemas and OpenAPI specifications. The compiler catches mistakes in seconds—not in production.

Boundaries

Boundary	What it does
Databases	Generate type-safe database access from PostgreSQL, MariaDB, Oracle, SQL Server, DuckDB, DB2
REST APIs	Generate type-safe servers and clients from OpenAPI specs
Unified Types	Share types across all your boundaries

Supported Stack

Category	Supported
Languages	Java 17+, Kotlin, Scala 2.13/3.x
Databases	PostgreSQL, MariaDB/MySQL, Oracle, SQL Server, DuckDB, DB2
API Frameworks	Spring Boot, JAX-RS, Quarkus, Http4s
JSON Libraries	Jackson, Circe, Play JSON, ZIO JSON

Next Steps

• Getting Started - Install and run your first generation
• Comparison - How Typr compares to alternatives