I have a love/hate relationship with JSON schema. I hate the documentation, or significant lack thereof. But I do love how business rules about relationships be

I have a love/hate relationship with JSON schema. I hate the documentation, or significant lack thereof. But I do love how business rules about relationships between fields can be expressed in the schema - e.g., if typeId is 7, then the cost field must be populated. With things like Avro or GPB you still need to validate that the relationship holds true separately.