OpenAI Structured Outputs JSON Schema Converter — Paste any JSON Schema and get one OpenAI accepts with strict: true — additionalProperties, required and unsupported keywords fixed everywhere, plus ready-to-run Python and TypeScript.

Convert Zod schemas to JSON schemas which are optionally compatible with OpenAI's structured outputs.

Tool schema compatibility layer for Mastra.ai

The official JSON schema converter for Valibot

Traverse JSON Schema passing each schema object to callback

A tool to convert Microsoft Office add-in manifests from XML format to JSON format.

Library for JSON-LD vocabularies

[](https://npmjs.org/package/@standard-community/standard-json "View this project on NPM") [

A structuredClone polyfill

JSON Schema validation and specifications

JSON Schema TypeScript definitions with complete inline documentation.

Another JSON Schema Validator

A TypeScript-native library that provides a unified interface for multiple LLM providers (OpenAI, Anthropic, Gemini)

Converts Zod schemas to Json Schemas

Assert schemas for compatibility against your AI models

Parse, Resolve, and Dereference JSON Schema $ref pointers

A JavaScript implementation of a extendable, fully compliant JSON Schema validator.

joi to JSON / OpenAPI Schema Converter

OpenAI LLM function schema from OpenAPI (Swagger) document

> [!CAUTION] > This project is now deprecated as Valibot now has an official JSON schema converter in the [@valibot/to-json-schema](https://github.com/fabian-hiller/valibot/tree/main/packages/to-json-schema). > The command line interface is moved to the p