Strudel MCP Server

export const samplePatterns = { simple: 's("bd*4")', techno: `s("bd*4, ~ cp ~ cp, hh*8").room(0.2)`, house: `stack( s("bd*4"), s("~ cp ~ cp"), s("[~ hh]*4") ).gain(0.8)`, dnb: `stack( s("bd ~ ~ bd ~ ~ bd ~"), s("~ ~ cp ~ ~ cp ~ ~"), s("hh*16") ).fast(2)`, withBass: `stack( s("bd*4, ~ cp ~ cp"), note("c2 c2 c2 c2").s("sawtooth").cutoff(800) )`, complex: `setcpm(130) stack( // Drums s("bd*4, ~ cp ~ cp, [~ hh]*4").room(0.2), // Bass note("c2 c2 c2 c2").s("sawtooth").cutoff(800), // Melody note("c4 e4 g4 e4").s("triangle").struct("~ 1 ~ 1").delay(0.25) ).gain(0.8)`, euclidean: `s("bd").euclid(5, 8)`, polyrhythm: `stack( s("bd").euclid(3, 16), s("cp").euclid(5, 16), s("hh").euclid(7, 16) )`, withEffects: `s("bd*4").room(0.9).delay(0.5).gain(0.7)`, invalid: `this is not valid strudel code`, syntaxError: `s("bd*4"`, empty: '', veryLong: 's("bd*4")' + '.sometimes(x => x.fast(2))'.repeat(50) }; export const musicalContexts = { cmajor: { key: 'C', scale: 'major', notes: ['C', 'D', 'E', 'F', 'G', 'A', 'B'], chords: ['C', 'F', 'G', 'Am'] }, aminor: { key: 'A', scale: 'minor', notes: ['A', 'B', 'C', 'D', 'E', 'F', 'G'], chords: ['Am', 'Dm', 'E', 'C'] }, gmajor: { key: 'G', scale: 'major', notes: ['G', 'A', 'B', 'C', 'D', 'E', 'F#'], chords: ['G', 'C', 'D', 'Em'] }, ddorian: { key: 'D', scale: 'dorian', notes: ['D', 'E', 'F', 'G', 'A', 'B', 'C'], chords: ['Dm', 'Em', 'F', 'G'] } }; export const drumPatterns = { fourOnFloor: 'bd*4', twoStep: 'bd ~ bd ~', breakbeat: 'bd ~ ~ bd ~ ~ ~ bd', dnbBreak: 'bd ~ ~ bd ~ ~ bd ~', trap: 'bd [bd bd] ~ bd', euclidean3_8: '1 ~ ~ 1 ~ ~ 1 ~', euclidean5_16: '1 ~ ~ 1 ~ ~ 1 ~ 1 ~ ~ 1 ~ ~ 1 ~' }; export const basslinePatterns = { techno: 'c2 c2 c2 c2', house: 'c2 ~ c2 ~', acid: 'c2 c3 c2 d#2', dub: 'c1 ~ ~ ~ c1 ~ f1 ~', walking: 'c2 d2 e2 f2' }; export const testMetadata = { tags: { genre: ['techno', 'house', 'dnb', 'ambient', 'experimental'], mood: ['dark', 'energetic', 'chill', 'aggressive', 'atmospheric'], complexity: ['simple', 'moderate', 'complex'], type: ['drums', 'bass', 'melody', 'full', 'effect'] }, bpms: { ambient: 80, house: 125, techno: 130, dnb: 174, trap: 140 }, keys: ['C', 'D', 'E', 'F', 'G', 'A', 'B', 'C#', 'D#', 'F#', 'G#', 'A#'] }; export const audioFeatures = { silent: { connected: true, timestamp: Date.now(), features: { average: 0, peak: 0, peakFrequency: 0, centroid: 0, bass: 0, lowMid: 0, mid: 0, highMid: 0, treble: 0, isPlaying: false, isSilent: true, bassToTrebleRatio: 'N/A', brightness: 'dark' } }, playing: { connected: true, timestamp: Date.now(), features: { average: 50, peak: 100, peakFrequency: 440, centroid: 250, bass: 60, lowMid: 50, mid: 40, highMid: 30, treble: 20, isPlaying: true, isSilent: false, bassToTrebleRatio: '3.00', brightness: 'balanced' } }, bassHeavy: { connected: true, timestamp: Date.now(), features: { average: 60, peak: 120, peakFrequency: 80, centroid: 150, bass: 100, lowMid: 60, mid: 30, highMid: 10, treble: 5, isPlaying: true, isSilent: false, bassToTrebleRatio: '20.00', brightness: 'dark' } }, bright: { connected: true, timestamp: Date.now(), features: { average: 55, peak: 110, peakFrequency: 8000, centroid: 600, bass: 20, lowMid: 30, mid: 50, highMid: 70, treble: 90, isPlaying: true, isSilent: false, bassToTrebleRatio: '0.22', brightness: 'bright' } } }; export const mcpRequests = { listTools: { jsonrpc: '2.0', method: 'tools/list', id: 1 }, callInit: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'init', arguments: {} }, id: 2 }, callWrite: (pattern: string) => ({ jsonrpc: '2.0', method: 'tools/call', params: { name: 'write', arguments: { pattern } }, id: 3 }), callPlay: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'play', arguments: {} }, id: 4 }, callGeneratePattern: (style: string, key: string, bpm: number) => ({ jsonrpc: '2.0', method: 'tools/call', params: { name: 'generate_pattern', arguments: { style, key, bpm } }, id: 5 }), callSave: (name: string, tags: string[]) => ({ jsonrpc: '2.0', method: 'tools/call', params: { name: 'save', arguments: { name, tags } }, id: 6 }) }; export const errorScenarios = { networkTimeout: { name: 'NetworkTimeout', message: 'Navigation timeout of 10000 ms exceeded', type: 'TimeoutError' }, selectorNotFound: { name: 'SelectorNotFound', message: 'Selector .cm-content not found', type: 'TimeoutError' }, notInitialized: { name: 'NotInitialized', message: 'Not initialized', type: 'Error' }, invalidPattern: { name: 'InvalidPattern', message: 'Pattern validation failed', type: 'ValidationError' }, fileNotFound: { name: 'FileNotFound', message: 'Pattern file not found', type: 'Error' } }; export const performanceMetrics = { fast: { initTime: 1000, writeTime: 50, playTime: 100, analyzeTime: 30 }, slow: { initTime: 5000, writeTime: 500, playTime: 1000, analyzeTime: 200 }, threshold: { init: 3000, write: 200, play: 500, analyze: 100 } }; export function createTestPattern( type: keyof typeof samplePatterns, modifications?: Partial<{ prefix: string; suffix: string; gain: number }> ): string { let pattern = samplePatterns[type]; if (modifications?.prefix) { pattern = modifications.prefix + '\n' + pattern; } if (modifications?.gain) { pattern += `.gain(${modifications.gain})`; } if (modifications?.suffix) { pattern += '\n' + modifications.suffix; } return pattern; } export function createTestPatternData(overrides?: any) { return { name: 'test-pattern', content: samplePatterns.simple, tags: ['test'], timestamp: new Date().toISOString(), audioFeatures: audioFeatures.silent, ...overrides }; } export async function wait(ms: number): Promise<void> { return new Promise(resolve => setTimeout(resolve, ms)); } export function generateRandomPattern(): string { const sounds = ['bd', 'cp', 'hh', 'oh', 'sn']; const patterns = ['*4', '*8', '~ ~ ~', '[~ ~]*2']; const sound = sounds[Math.floor(Math.random() * sounds.length)]; const pattern = patterns[Math.floor(Math.random() * patterns.length)]; return `s("${sound}${pattern}")`; }