Strudel MCP Server

Instructions

Implementation Reference

• src/server/EnhancedMCPServerFixed.ts:828-833 (handler)

  Handler executes the generate_scale tool: validates root note and scale name, calls MusicTheory.generateScale, formats and returns the scale notes.

  case 'generate_scale':
    InputValidator.validateRootNote(args.root);
    InputValidator.validateScaleName(args.scale);
    const scaleNotes = this.theory.generateScale(args.root, args.scale);
    return `${args.root} ${args.scale} scale: ${scaleNotes.join(', ')}`;

• src/server/EnhancedMCPServerFixed.ts:444-455 (registration)

  Tool registration in getTools(): defines name, description, and input schema for generate_scale.

  {
    name: 'generate_scale',
    description: 'Generate scale notes',
    inputSchema: {
      type: 'object',
      properties: {
        root: { type: 'string', description: 'Root note' },
        scale: { type: 'string', description: 'Scale type' }
      },
      required: ['root', 'scale']
    }
  },

• src/services/MusicTheory.ts:37-53 (helper)

  Core helper function in MusicTheory class: generates scale notes from root and scale intervals using modulo 12 transposition.

  generateScale(root: string, scaleName: keyof typeof this.scales): string[] {
    const noteNames = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B'];
    const rootIndex = noteNames.indexOf(root.toUpperCase());
    if (rootIndex === -1) {
      throw new Error(`Invalid root note: ${root}`);
    }
    
    const scale = this.scales[scaleName];
    if (!scale) {
      throw new Error(`Invalid scale: ${scaleName}`);
    }
    
    return scale.map(interval => {
      const noteIndex = (rootIndex + interval) % 12;
      return noteNames[noteIndex];
    });
  }