use schemars::schema_for_value; use serde::Serialize; #[derive(Serialize)] pub struct MyStruct { pub my_int: i32, pub my_bool: bool, pub my_nullable_enum: Option, } #[derive(Serialize)] pub enum MyEnum { StringNewType(String), StructVariant { floats: Vec }, } fn main() { let schema = schema_for_value!(MyStruct { my_int: 123, my_bool: true, my_nullable_enum: Some(MyEnum::StringNewType("foo".to_string())) }); println!("{}", serde_json::to_string_pretty(&schema).unwrap()); }