Entities

RadiccioResponseMetadata

Name Type Req. Extension Notes
serverName string No none A human-readable name that describes this server instance (not the server software or product name). For example: David’s Mac mini. This might be the name of the computer the server is running on, or it might be custom text the user entered so that they could recognize their server later. This may contain spaces and any valid UTF-8 character.
keyID string No none Radiccio internal use only.

RadiccioMusicFolderMetadata

Name Type Req. Extension Notes
icon RadiccioMusicFolderIcon No none The icon that the user has picked to represent the music folder, if any.
activityEnabled boolean Yes none When false, scrobbling is disabled (related endpoints return an error) and play counts, last played, etc. are absent from responses.

RadiccioMusicFolderIcon

Name Type Req. Extension Notes
sfSymbolName string No none If the user selected an icon which is part of Apple’s SF Symbols icon set, this will be a name suitable for passing to SwiftUI’s Image(systemName:)
data string No none If the user selected a custom icon, this will contain raw image data, suitable for passing to NSImage(data:) after base64 decoding.
This attribute is not used when the user selects an SF Symbol.
useDefault boolean Yes none If true, the user has not selected an icon, and the default music folder icon should be used.

RadiccioAlbumMetadata

Name Type Req. Extension Notes
pinned boolean Yes pins  
autoSkip boolean Yes autoSkip  
lastJournalEntry RadiccioJournalEntry No journal  

RadiccioArtistMetadata

Name Type Req. Extension Notes
pinned boolean Yes pins  

RadiccioPlaylistMetadata

Name Type Req. Extension Notes
nested boolean Yes nested Radiccio stores and retrieves playlists as M3U files in the filesystem. If a playlist is stored in the root of the music folder, or in a subfolder of the root, this value will be false. If the playlist is in a subfolder of a subfolder (or any deeper level), the value will be true. This allows Radiccio to provide a feature that helps the user hide certain kinds of bundled or automatically-generated playlist files which may not be useful to them.

RadiccioSongMetadata

Name Type Req. Extension Notes
autoSkip boolean Yes autoSkip  
lastJournalEntry RadiccioJournalEntry No journal  
codec string No None A pair of “four character codes” (also known as FourCC or FourCharCode) separated by a slash (/). The first FourCC is usually soun. The second FourCC identifies the audio codec, such as: lpcm, flac, .mp3, aac , etc. Note that every four character code is exactly four characters, including any spaces or other characters used for padding.

Example: soun/aac (note the trailing space, which is part of the FourCC and must not be removed)

Radiccio uses FourCCs because that is used by Apple’s AVPlayer API, which Radiccio uses for audio playback. The information in the OpenSubsonic base spec is not always sufficient to reliably distinguish between codecs; MIME types and file name extensions are often shared by multiple codecs or identify the container rather than the codec (for example, ALAC and AAC both use an MP4 container; Opus and Vorbis both use an Ogg container).

RadiccioJournalEntryResultSet

Part of the journal extension.

Name Type Req. Notes
journalEntry Array of RadiccioJournalEntry Yes Journal entries

RadiccioJournalEntry

Part of the journal extension.

Name Type Req. Notes
date string Yes Date the journal entry was created. [ISO 8601]
enjoyment RadiccioEnjoyment No  
mood RadiccioMood No  
notes string No  

RadiccioEnjoyment

Part of the journal extension.

This is a key/value pair. The key will be a specific enum case, and the value will either be an empty object, or a sub-object with user-entered text.

This corresponds to the following Swift enum:

enum Enjoyment: Codable, Hashable {
    case best
    case love
    case like
    case okay
    case indifferent
    case mixed
    case mildDislike
    case dislike
    case hate
    case custom(_ labelText: String)
}

Examples encoded to JSON:

{
	"best": {}
}
{
	"custom": {
		"_0": "This is example text."
	}
}

RadiccioMood

Part of the journal extension.

This is a key/value pair. The key will be a specific enum case, and the value will either be an empty object, or a sub-object with user-entered text and an emoji.

This corresponds to the following Swift enum:

enum Mood: Codable, Hashable {
    case happy
    case aggro
    case mellow
    case moody
    case custom(_ labelText: String, _ emoji: String)
}

Examples encoded to JSON:

{
	"mellow": {}
}
{
	"custom": {
		"_0": "This is example text."
		"_1": "🙂"
	}
}

RadiccioPinnedResultSet

Field Type Req. Details
artist Array of artist No Pinned artists
album Array of Child No Pinned albums

RadiccioRecentlyPlayedArtistsResultSet

Field Type Req. Details
artist Array of artist Yes Recently played artists

This page was last updated: May 19, 2026

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