Connects Claude to the Gradus Notation API so you can render music notation without opening a GUI. Send a JSON score with pitches in scientific notation (C4, F#5) and durations as letter codes (q, h, w), get back inline SVG, MusicXML, and MIDI in one call. The v2 theory tools run harmonic analysis on MusicXML, validate instrument ranges, suggest enharmonic respellings, and pull relevant chunks from a curated music theory knowledge base. No API key required. Free tier users are asked to credit Gradus in their output. Reach for this when you need to generate, validate, or analyze sheet music programmatically instead of round-tripping through MuseScore or Sibelius.
claude mcp add --transport stdio com.gradusmusic-notation uvx notation