JSON Schema
JSON Data
What is JSON Schema Validator?
A JSON Schema Validator is a tool that validates JSON data against a predefined schema. The schema defines the structure, data types, required fields, and validation rules that your JSON data must follow.
Key Features:
- Validate data structure and types
- Enforce required fields
- Apply format validation (email, URI, date, etc.)
- Set minimum/maximum values and string lengths
- Define patterns with regular expressions
- Validate nested objects and arrays
Common Use Cases:
- API Request Validation: Ensure incoming API payloads match expected structure
- API Response Validation: Verify API responses are correctly formatted
- Form Validation: Validate complex form data with strict rules
- Data Migration: Ensure data integrity during ETL processes
- Configuration Validation: Validate config files and settings
- API Contract Documentation: Use schemas as API documentation (OpenAPI-style)
How JSON Schema Works:
JSON Schema uses keywords like type,required,minimum,pattern, andformat to define validation rules. When you validate JSON data, the validator checks if the data meets all the rules specified in the schema and reports detailed errors if validation fails.