Data Validation

Schema-based data validation across languages and formats. Covers JSON Schema, Zod (TypeScript), Pydantic (Python), API boundary validation, data contracts, and integrity checking.

When to Use

• Defining the shape of API request/response bodies
• Validating user input before processing
• Setting up data contracts between services
• Checking CSV/JSON file integrity before import
• Migrating data (did the ETL preserve everything?)
• Generating types or documentation from schemas

JSON Schema

Basic schema