Read musical content from a range of measures in the live score.

Returns notes, rests, and musical elements in the specified range. Works best with MuseScore; Dorico and Sibelius return limited data through the Remote Control WebSocket API.

Args: start_measure: First measure to read (1-indexed). end_measure: Last measure to read (inclusive, 1-indexed). staff: Staff index to read (0-indexed). If not provided, reads all staves.

Read the content of a specific measure and staff from the connected score.

Works best with MuseScore; Dorico and Sibelius return limited data.

Args: measure: Measure number (1-indexed). staff: Staff index (0-indexed, default: 0).

Get properties of the current selection in the connected score application.

Returns information about whatever is currently selected:

• MuseScore: Returns cursor position info (measure, beat, staff).

• Dorico/Sibelius: Returns properties from the Remote Control API's getproperties message — names, types, and values of all properties on the selected items. This is the closest the WebSocket API gets to "reading" score data.

Requires an active connection.

Connect to a running MuseScore instance.

The MuseScore MCP Score Bridge plugin must be running.

Args: host: WebSocket host (default: localhost). port: WebSocket port (default: 8765).

Disconnect from MuseScore.

Connect to a running Dorico instance via its Remote Control API.

Dorico 4+ has a built-in WebSocket server (no plugin needed). The port is configurable in Dorico's preferences.

Args: host: WebSocket host (default: localhost). port: WebSocket port (default: 4560, Dorico's default).

Disconnect from Dorico.

Connect to a running Sibelius instance via Sibelius Connect.

Sibelius 2024.3+ has a built-in WebSocket server (no plugin needed). Requires Sibelius Ultimate tier. The port is configurable.

Args: host: WebSocket host (default: localhost). port: WebSocket port (default: 1898, Sibelius Connect's default).

Disconnect from Sibelius.

Get information about the currently open score.

Requires an active connection — use connect_to_musescore, connect_to_dorico, or connect_to_sibelius first.

Check if the connected score application is responsive.

Works with any connected application (MuseScore, Dorico, or Sibelius). Does NOT auto-connect — returns an error if not already connected.

Add a rehearsal mark in the live score.

Args: measure: Measure number (1-indexed). text: Rehearsal mark text (e.g. "A", "B", "Intro").

Add a chord symbol in the live score.

Args: measure: Measure number (1-indexed). symbol: Chord symbol (e.g. "Cmaj7", "Dm7", "G7").

Set a barline type in the live score.

Args: measure: Measure number (1-indexed). barline_type: One of "double", "final", "startRepeat", "endRepeat".

Set the key signature in the live score.

Args: measure: Measure number (1-indexed). fifths: Number of sharps (positive) or flats (negative). Examples: 0 = C major, 2 = D major, -3 = Eb major.

Set the tempo in the live score.

Args: measure: Measure number (1-indexed). bpm: Beats per minute. text: Optional display text (e.g. "Swing", "Allegro").

Transpose a passage by a number of semitones in the live score.

Args: start_measure: First measure (1-indexed). end_measure: Last measure (inclusive, 1-indexed). staff: Staff index (0-indexed). semitones: Number of semitones to transpose (positive = up, negative = down).

Undo the last action in the connected score application.