JSON Schema Builder

This interactive tool creates JSON schemas without writing JSON by hand. Define your properties in the interface below. The tool generates a valid JSON schema.

How to Use

1. Set Schema Info: Add a title and description for your schema
2. Add Properties: Click “Add Property” to define fields in your schema
3. Configure Each Property:
   • Set the property name
   • Choose the data type (string, number, boolean, etc.)
   • Add a description
   • Mark as required if needed
   • For arrays, specify the item type
   • For enums, add allowed values
4. Preview & Export: Toggle the preview to see your generated schema, then copy or download it

Interactive Builder

JSON Schema Builder

Create JSON schemas with an intuitive visual interface

Sample Schemas

Load pre-built schemas for common AI use cases or paste your own:

📋 Paste Schema

Paste an existing JSON schema to edit it

Simple AI Response

Basic structured response for AI tools

Weather Tool

Tool for getting weather information

Analysis Result

Complex analysis response with multiple data types

Advanced AI Tool

Comprehensive tool schema with validation and metadata

Schema Title

Schema Description

Properties

Expand AllCollapse All

+ Add Property

Copy SchemaDownload Schema

Generated JSON Schema

{ "$schema": "http://json-schema.org/draft-07/schema#", "type": "object", "title": "", "description": "", "properties": {}, "required": [] }

Paste JSON Schema

✕

Paste your JSON schema below and click "Load Schema" to import it:

CancelLoad Schema

Tips for Better Schemas

• Use Descriptive Names: Choose clear, meaningful property names
• Add Descriptions: Help others understand what each property is for
• Be Specific with Types: Use the most appropriate type for each property
• Use Enums: When properties have limited valid values, use enums
• Mark Required Fields: Clearly indicate which properties are mandatory
• Consider Arrays: Think about whether properties should be single values or arrays