Strudel MCP Server

Instructions

Implementation Reference

• src/services/PatternGenerator.ts:68-81 (handler)

  Core handler function that generates Strudel bassline pattern code based on musical key and style, using predefined patterns with synth parameters.
  generateBassline(key: string, style: string): string { const patterns: Record<string, string> = { techno: `note("${key}2 ${key}2 ${key}2 ${key}2").s("sawtooth").cutoff(800)`, house: `note("${key}2 ~ ${key}2 ~").s("sine").gain(0.8)`, dnb: `note("${key}1 ~ ~ ${key}2 ~ ${key}1 ~ ~").s("square").cutoff(400)`, acid: `note("${key}2 ${key}3 ${key}2 ${this.theory.getNote(key, 3)}2").s("sawtooth").cutoff(sine.range(200, 2000).slow(4))`, dub: `note("${key}1 ~ ~ ~ ${key}1 ~ ${this.theory.getNote(key, 5)}1 ~").s("sine:2").room(0.5)`, funk: `note("${key}2 ${key}2 ~ ${this.theory.getNote(key, 5)}2 ~ ${key}2 ${this.theory.getNote(key, 7)}2 ~").s("square").cutoff(1200)`, jazz: `note("${key}2 ~ ${this.theory.getNote(key, 4)}2 ~ ${this.theory.getNote(key, 7)}2 ~").s("sine").gain(0.7)`, ambient: `note("${key}1").s("sine").attack(2).release(4).gain(0.6)` }; return patterns[style] || patterns.techno; }
• src/server/EnhancedMCPServerFixed.ts:239-250 (registration)

  Tool registration in getTools(): defines name, description, and input schema for generate_bassline tool.
  { name: 'generate_bassline', description: 'Generate bassline', inputSchema: { type: 'object', properties: { key: { type: 'string', description: 'Musical key' }, style: { type: 'string', description: 'Bass style' } }, required: ['key', 'style'] } },
• src/server/EnhancedMCPServerFixed.ts:805-812 (handler)

  Server-side tool handler: validates args, delegates to PatternGenerator, appends bassline to current pattern, writes it.
  case 'generate_bassline': InputValidator.validateRootNote(args.key); InputValidator.validateStringLength(args.style, 'style', 100, false); const bass = this.generator.generateBassline(args.key, args.style); const currentBass = await this.getCurrentPatternSafe(); const newBassPattern = currentBass ? currentBass + '\n' + bass : bass; await this.writePatternSafe(newBassPattern); return `Generated ${args.style} bassline in ${args.key}`;
• src/server/EnhancedMCPServerFixed.ts:242-249 (schema)

  Input schema definition: requires 'key' (string) and 'style' (string) parameters.
  inputSchema: { type: 'object', properties: { key: { type: 'string', description: 'Musical key' }, style: { type: 'string', description: 'Bass style' } }, required: ['key', 'style'] }