# AddImageHashMetadata

Adds custom metadata (a key-value pair) to an image hash.

Type: synchronous

Parameter | Description | Required
--- | --- | ---
`database` | The name of the database that contains the image hash. | Yes
`identifier` | The identifier of the image hash that you want to add metadata to. | Yes
`key` | The key to add (maximum 254 bytes). | Yes
`value` | The value to add (maximum 254 bytes). | Yes

## Example

The following example adds metadata to an image hash:

    /action=AddImageHashMetadata&database=ImageHashes
                                &identifier=MyImage
                                &key=importance
                                &value=high

## Response

    <autnresponse>
        <action>ADDIMAGEHASHMETADATA</action>
        <response>SUCCESS</response>
        <responsedata></responsedata>
    </autnresponse>

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