json scheme

layercake/layercake/extra_types.py

@@ -148,6 +148,17 @@ class CpfCnpj:
 
         return cpfcnpj_
 
+    @classmethod
+    def __get_pydantic_json_schema__(
+        cls, core_schema: core_schema.CoreSchema, handler: GetJsonSchemaHandler
+    ) -> JsonSchemaValue:
+        field_schema = handler(core_schema)
+        field_schema.update(
+            type='string',
+            format=cls.__name__.lower().removesuffix('str'),
+        )
+        return field_schema
+
 
 if TYPE_CHECKING:
     CpfStr = Annotated[str, ...]