Malli is a powerful, data-driven schema library for Clojure and ClojureScript, offering rich support for specification, validation, parsing, error reporting, and generative testing. Designed for performance, Malli leverages efficient runtime representations and code generation, seamlessly integrating with Clojure’s data-oriented architecture. It supports function schemas, JSON transformation, and OpenAPI generation for strong API contracts.

Features

  • Declarative, data-driven schemas for validation and transformation
  • Generative testing support via integrated data generators
  • Expressive error reporting with humanized messages
  • Supports function schemas, Clojure → JSON conversion
  • Optimized for speed and low memory via code generation
  • Compatible with OpenAPI and JSON Schema tooling

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Categories

Data Management

License

Eclipse Public License

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Registered

2025-07-08