API Validation
API validation is the process of ensuring that data sent to or received from an API meets predefined rules and constraints, such as data types, formats, and business logic. It involves checking inputs and outputs against schemas or specifications to prevent errors, enhance security, and maintain data integrity. This is crucial for building reliable and robust APIs that handle requests and responses correctly.
Developers should implement API validation to catch invalid data early, reduce bugs, and improve user experience by providing clear error messages. It is essential in scenarios like user registration, payment processing, or data import, where incorrect data can lead to security vulnerabilities or system failures. Using validation helps ensure APIs are resilient and adhere to contracts defined in tools like OpenAPI or JSON Schema.