JSON Schema validation and tooling

31 repos

Libraries, validators, and tools for implementing JSON Schema across multiple languages, with a focus on Python and TypeScript. The cluster centers on schema validation, type checking, and data serialization, including foundational specifications and high-performance implementations like schemasafe and msgspec. Most repos tackle practical validation problems and integrations with ecosystems like Pydantic, supporting both specification work and production use cases.

Python · 10

TypeScript · 5

Java · 4

C++ · 3

C# · 2

JavaScript · 2

json-schema ·108,489

json ·106,494

java ·35,246

python ·32,423

golang ·29,798

rust ·28,542

cplusplus ·27,728

csharp ·27,728

graphql ·27,728

elm ·27,728

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Julian/jsonschema

An implementation of the JSON Schema specification for Python

Python

4,978

3,049 commits

python-jsonschema/jsonschema

An implementation of the JSON Schema specification for Python

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json-schema-org/json-schema-spec

The JSON Schema specification

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2,217 commits

python-jsonschema/referencing

Cross-specification JSON referencing (JSON Schema, OpenAPI, and the one you just made up!)

Python

946 commits

sourcemeta/jsonschema

The CLI for working with JSON Schema. Covers formatting, linting, testing, bundling, and more for…

C++

305

948 commits

santhosh-tekuri/jsonschema

JSONSchema (draft 2020-12, draft 2019-09, draft-7, draft-6, draft-4) Validation using Go

1,267

108 commits

JamesNK/Newtonsoft.Json.Schema

Json.NET Schema is a powerful, complete and easy to use JSON Schema framework for .NET

256

443 commits

jcrist/msgspec

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and…

Python

4,098

909 commits

msgspec/msgspec

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and…

Python

4,098

909 commits

ExodusMovement/schemasafe

A reasonably safe JSON Schema validator with draft-04/06/07/2019-09/2020-12 support.

JavaScript

177

949 commits

marksparkza/jschon

An object-oriented JSON Schema implementation for Python.

Python

142

576 commits

sourcemeta/blaze

The ultra high-performance C++ JSON Schema validator, providing validation even down to the…

C++

130

860 commits

quicktype/quicktype

Generate types and converters from JSON, Schema, and GraphQL

TypeScript

13,864

4,101 commits

glideapps/quicktype

Generate types and converters from JSON, Schema, and GraphQL

TypeScript

13,864

4,227 commits

omissis/go-jsonschema

A tool to generate Go data types from JSON Schema definitions.

803

607 commits

tristanpenman/valijson

Header-only C++ library for JSON Schema validation, with support for many popular parsers

C++

424

721 commits

json-everything/json-everything

System.Text.Json-based support for all of your JSON needs.

1,272

3,765 commits

json-schema/JSON-Schema-Test-Suite

A language agnostic test suite for the JSON Schema specifications

Python

748

1,489 commits

joelittlejohn/jsonschema2pojo

Generate Java types from JSON or JSON Schema and annotate those types for data-binding with…

Java

6,380

1,384 commits

networknt/json-schema-validator

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

Java

1,080

987 commits

rjsf-team/react-jsonschema-form

A React component for building Web forms from JSON Schema.

TypeScript

15,894

2,096 commits

mangiucugna/json_repair

Repair malformed JSON from LLMs, APIs, logs, and user input in Python.

Python

5,094

602 commits

tiangolo/sqlmodel

SQL databases in Python, designed for simplicity, compatibility, and robustness.

Python

18,319

1,026 commits

json-schema-org/JSON-Schema-Test-Suite

A language agnostic test suite for the JSON Schema specifications

Python

748

1,489 commits

confluentinc/schema-registry

Confluent Schema Registry for Kafka

Java

2,465

23,360 commits

sindresorhus/conf

Simple config handling for your app or module

TypeScript

1,346

208 commits

json-schema-org/website

JSON Schema website

HTML

169

1,591 commits

json-schema-org/community

A space to discuss community and organisational related things

135

704 commits

jimblackler/jsonschemafriend

A JSON Schema loader and validator, delivered as a Java library.

Java

708 commits

sagold/json-schema-library

Customizable and hackable json-validator and json-schema utilities for traversal, data generation…

TypeScript

253

815 commits

Stranger6667/jsonschema-rs

A high-performance JSON Schema validator for Rust

Rust

814

1,744 commits