Implementations of JSON Typedef

This document is a curated list of implementations of JSON Type Definition. JSON Typedef is an open standard; anyone can read the formal standard and implement on their own for free.

If an implementation is listed here, that means it is known to comply with the JTD test suite. This list is not guaranteed to be complete, and just because a library or tool isn’t listed here doesn’t mean it’s not good or somehow invalid.

JavaScript / TypeScript

Validation

• The jtd package on NPM implements validation. Written in TypeScript, runs in Node.js and browsers.
• The ajv package on NPM implements validation starting with version v7.1.0.

Code Generation

• jtd-codegen supports TypeScript.

Python

Validation

• The jtd package on PyPI implements validation.

Code Generation

• jtd-codegen supports Python.

Java

Validation

• The com.jsontypedef.jtd package on Maven Central implements validation. Works with Jackson and Gson.

Code Generation

• jtd-codegen supports Java.

Go

Validation

• The github.com/jsontypedef/json-typedef-go module implements validation.

Code Generation

• jtd-codegen supports Go.

C#

Validation

• The Jtd.Jtd package on NuGet implements validation. Works with System.Text.Json and Newtonsoft.Json.

Code Generation

• jtd-codegen supports CSharp.

Ruby

Validation

• The jtd gem on RubyGems implements validation.

Code Generation

• jtd-codegen supports Ruby.

Rust

Validation

• The jtd package on crates.io implements validation. Works with serde / serde_json.

Code Generation

• jtd-codegen supports Rust.