---
title: Available Metadata Attribute Keys
framework: coreservices
role: collectionGroup
role_heading: API Collection
path: coreservices/file_metadata/mdschema/available_metadata_attribute_keys
---

# Available Metadata Attribute Keys

Specify the available metadata attribute keys for a contenttype.

## Overview

Overview These keys are in the dictionary returned by the function MDSchemaCopyAttributesForContentType.

## Topics

### Constants

- [kMDAttributeDisplayValues](coreservices/kmdattributedisplayvalues.md)
- [kMDAttributeAllValues](coreservices/kmdattributeallvalues.md)
- [kMDAttributeReadOnlyValues](coreservices/kmdattributereadonlyvalues.md)
- [kMDExporterAvaliable](coreservices/kmdexporteravaliable.md)