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# MLModelMetadataKey

The set of keys the model uses to store values in its metadata dictionary.

```
struct MLModelMetadataKey
```

## Topics

### Metadata keys

[`author`](/documentation/CoreML/MLModelMetadataKey/author)

Key for the author of the model.

[`description`](/documentation/CoreML/MLModelMetadataKey/description)

Key for the overall description of the model.

[`license`](/documentation/CoreML/MLModelMetadataKey/license)

Key for the license of the model.

[`versionString`](/documentation/CoreML/MLModelMetadataKey/versionString)

Key for the version of the model.

[`creatorDefinedKey`](/documentation/CoreML/MLModelMetadataKey/creatorDefinedKey)

Key for the model creator’s custom metadata.

### Creating metadata

[`init(rawValue:)`](/documentation/CoreML/MLModelMetadataKey/init(rawValue:))


---

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