Arpeggiator pad · kimi-k3.1-pro
Output generated Cost / run $0.1750 Runtime 188.1s
Prompt for this run
Build a pentatonic synthesizer pad grid and arpeggiator using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
METRICS
Transcript · 24 messages
Build a pentatonic synthesizer pad grid and arpeggiator using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
thinking
Kimi needs to build this. Should inspect files.
{"command":"ls -la && printf '\\n--- files ---\\n' && find . -maxdepth 2 -type f -printf '%p\\n'","timeout":10}total 356 drwx------ 3 node node 4096 Oct 24 01:40 . drwxrwxrwt 8 root root 4096 Oct 24 01:40 .. drwxr-xr-x 3 node node 4096 Oct 24 01:40 .home -rw-r--r-- 1 node node 349169 Oct 24 01:40 tone.min.js --- files --- ./tone.min.js
thinking
Should create polished app. Should synth reverb works Tone.Reverb. Pads two octave pentatonic C D E G A C D E G A = ten. Separate toggle each pad, nonempty initial e.g C4 E4 G4 A4 C5. Pad grid aesthetic. One self contained external local tone script allowed. Should have interactions robust. Sequence indicator ascending current, tempo changes. Tone.Transport.scheduleRepeat eighth. Repeated play no duplicates. Could use Transport.start with one schedule repeat persistent; state isPlaying gating. Start schedule once at init or ensure. User click pad audio init gesture async. Show audio status. Play scheduler one. Should tempo range 60-180 with slider and number? Tempo control with +/- and range, BPM display. selection check toggles separate. click pad triggersAttackRelease voice through reverb. Sequence playback active visual pad and sequence chips. stop no new notes and active clear. Use Tone.PolySynth perhaps reverb connected. Should release tails. create single PolySynth voices Synth, envelope. Reverb configured decay etc; synth.connect(reverb), reverb.toDestination. Reverb generation async but no need ready. Effects. Use Tone.getTransport() newer. tone version inspect header.
{"command":"head -c 500 tone.min.js","timeout":10}/*! For license information please see Tone.js.LICENSE.txt */ !function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.Tone=e():t.Tone=e()}("undefined"!=typeof self?self:this,(()=>(()=>{var t={382:function(t,e,s){!function(t,e,s,n){"use strict";function i(t){return t&&"object"==typeof t&&"default"in t?t:{default:t}}var o=i(e),r=i(s),a=i(n),c=function(t,e,s){return{endTime:e,insertTime:s
thinking
I'll write. Design responsive desktop atmospheric dark, peach acid lime accents. Large title "TEN / TONES", waveform subtle CSS, no canvas perhaps decorative SVG inline. Top status, transport panel left timeline sequence, pads main. Ten pads grid 5x2 or 5 columns. At mobile 2 cols. Each pad keyboard shortcut keys A S D F G H J K L ;? 10. Buttons separate selection circle top right and pad click body. Labels note. Active classes transient with setTimeout but repeated avoid stale timer via map. Arp active should keep only current step. Manual marks and sequence active possible use data flags and CSS. Could class .is-playing and .is-manual. Current sequence rail chips update and next. Sequence sorted notes static data order. scheduleRepeat callback obtains selectedNotes at callback; increments step index only if nonempty. empty no notes. Tempo changes transport.bpm.rampTo? immediate value. Sequence visible reflects check toggles, current step cleared if no current selection. For selected notes in ascending pitch. Use current selected sorted list each step, cursor modulo length. Selection changes during playback naturally. Highlight sequence UI from schedule callback using Tone.getDraw().schedule. Potential if tempo changes current scheduled. fine. Transport.start repeated if state not started; isPlaying gate. Stop transport.stop? If stop transport resets and no new; can pause then? transport.stop prevents scheduled repeat? persistent repeat remains and restart works. stop also releaseAll? Existing release tails should decay, don't release all. transport.stop leaves synth manual untouched. I can call transport.stop(); sequence reset. schedule created only once at audio initialization. Play after init schedule. If schedule created once after synth init. Transport initial suspended. On play ensure audio and scheduler then transport.start. no overlap. Audio init concurrent clicks guard promise. Use ensureAudio with tone.start, synth setup. Tone.context state. start in gesture. error catch. Pads buttons and toggles semantic: each card div with main button and toggle button separate. Note trigger button aria-label play note. toggle aria-pressed. CSS. Keyboard optional keydown ignore range and buttons? only if no input and no repeat. play note via click. Space toggle play except button focused to avoid. Nice. Use icon inline SVG. JS no audio external. Reverb wet .45. PolySynth maxPolyphony. volume -9. Master perhaps Tone.Volume. Simpler synth.connect(reverb), reverb.toDestination. Add Tone.Filter? all synth. arp note duration "8n" perhaps release 1.4 leads overlapping voices intended. Manual duration "2n". Active visual 220ms. Sequence rail with position, notes and plus if none. Live step number. Tempo slider update output, gradient custom. Start selection C4 E4 G4 C5. Should have ten labeled. Octave "LOW" C4-A4 and "HIGH" C5-A5. Kimi will create.
index.html (19484 bytes)Successfully wrote to index.html
thinking
Kimi should test browser.
{"action":"reload"}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO STANDBY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n120\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAY\nSTOP\nLIVE SEQUENCE\n04 STEPS\nC4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Looks good. Now test pad click active and console errors. Click coordinate first pad center.
{"action":"click","x":119,"y":413}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n120\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAY\nSTOP\nLIVE SEQUENCE\n04 STEPS\nC4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Active checked. Play click then inspect motion perhaps delay.
{"action":"click","x":964,"y":423}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n120\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAYING\nSTOP\nLIVE SEQUENCE\n04 STEPS\nC4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Perhaps scheduler not advancing? Screenshot immediate no highlight okay. Motion.
{"action":"motion"}Frame 1, +0ms
[Browser image supplied to model]
Frame 2, +562ms
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Frame 3, +1105ms
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Frame 4, +1654ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n120\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAYING\nSTOP\nLIVE SEQUENCE\n04 STEPS\nC4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Works. Should have selection and tempo. Could click D4 select at (344,334) then tempo via click x1100 y354 value ~160.
{"action":"click","x":345,"y":335}{"command":"grep -n \"scheduleRepeat\\|Tone.start\\|type=\\\"range\\\"\" index.html","timeout":10}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n120\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAYING\nSTOP\nLIVE SEQUENCE\n05 STEPS\nC4\nD4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
80: <input id="tempo" type="range" min="60" max="180" value="120" step="1"> 138: await Tone.start(); 148: schedulerId = Tone.getTransport().scheduleRepeat(onStep, '8n');
thinking
I'll click range.
{"action":"click","x":1090,"y":355}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n156\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAYING\nSTOP\nLIVE SEQUENCE\n05 STEPS\nC4\nD4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Should repeated Play no sched overlap code. Stop console.
{"action":"click","x":1084,"y":423}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"PENTA / 01\nAUDIO READY\nC MAJOR PENTATONIC · 10 VOICES\nPlay the in-between.\n\nA small instrument for wide-open ideas. Tap a tone, build a sequence, let it drift.\n\nNOTE GRID\nC4 — A5\nA\nC4\nS\nD4\nD\nE4\nF\nG4\nG\nA4\nH\nC5\nJ\nD5\nK\nE5\nL\nG5\n;\nA5\nIncluded in arpeggio\nTap note to audition\nARPEGGIATOR\n156\nBPM\nTempo in beats per minute\n60\nEIGHTH NOTES\n180\nPLAY\nSTOP\nLIVE SEQUENCE\n05 STEPS\nC4\nD4\nE4\nG4\nC5\n\nAscending pitch order. Changes apply on the next step.\n\nSYNTHESIZED IN REAL TIME · REVERB ON\nKEYS A S D F G / H J K L ;","images":"attached"}
thinking
Potential bug async play double click before ensureAudio resolves: both see playing false, await same then first sets true second returns, okay. Manual ensureAudio first then play gets same. good. Requirement "Stop prevents new arpeggiator notes" race Draw scheduled after stop guarded. Transport.stop. Reverb tail. Good. Should test empty selection no new notes not necessary readily but can. Code solid. However separate selection toggle while clicking note may pad .active interference manualTimers and currentNote stale. stop currentNote reset. on manual active currentNote may be old note same? okay. Could mention autoplay warnings expected no errors. Kimi will keep the response concise, include the file and checks.
Built `index.html` with: - Ten synthesized C-major pentatonic pads across C4–A5 - Reverb, active-pad feedback, and keyboard controls - Independent sequence toggles with a nonempty default selection - Ascending eighth-note arpeggiator - Play, Stop, and live 60–180 BPM tempo control - Safe repeated Play behavior and release/reverb tails after Stop - Responsive interface with live sequence highlighting Verified in the browser: pad activation, audio initialization, playback, live note-selection updates, tempo changes from 120 to 156 BPM, sequence highlighting, and stopping playback. No audio-initialization or scheduling errors appeared; only the expected pre-gesture autoplay warnings.