Apollo Studio's app provides a GitHub Checks integration for Studio's schema check features.

Schema Checks

Run a check on every commit that looks for schema changes, and validate whether or not these changes are safe or breaking. Any schema change that might affect how actively used queries operate (like removing a field or changing a default argument type) will be considered breaking.

Studio uses its knowledge of usage metrics from your server to determine if there are clients actively using the changing parts of your schema.