GraphOS has introduced custom schema checks, a new feature that enables organizations to integrate their own business logic, security policies, and rules into the existing schema check workflow. This allows for enhanced governance capabilities, ensuring that every schema change adheres to company-specific standards, while maintaining robust and secure approach to schema integrity. The feature is designed to support API platform teams' demand for more flexible governance, providing a unified workflow for schema modifications and automation of schema validation. Custom checks can be set up using an HTTPS endpoint, with examples provided for integrating with open-source linters such as graphql-eslint, and are now available in the General Availability (GA) phase for GraphOS Enterprise plans.