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Arpeggiator pad · seed-2-1-turbo

Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.

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user

Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.

assistant
thinking
Using the available Tone.js, I'll build the target pentatonic pad grid.First, verify the Tone.js file, then create the HTML file.
bash {"command":"ls /tmp/ws/tone.min.js"}
toolResult

/tmp/ws/tone.min.js

assistant
thinking
It is my plan to create the target HTML file.
write /tmp/ws/index.html (8634 bytes)
toolResult

Successfully wrote 8634 bytes to /tmp/ws/index.html

assistant
thinking
File written, verifying validity now.
bash {"command":"ls -la /tmp/ws/index.html && echo \"---\" && wc -l /tmp/ws/index.html"}
toolResult

-rw-r--r--. 1 node node 8635 Aug 13 01:24 /tmp/ws/index.html --- 291 /tmp/ws/index.html

assistant

Created `/tmp/ws/index.html` — a self-contained pentatonic pad grid app using tone.min.js: **Features:** - **15 clickable pads** (3 octaves × 5 notes) in A minor pentatonic (A, C, D, E, G) - **Polyphonic synth** (triangle wave) with reverb for pad clicks - **Arpeggiator** with play/stop button — sawtooth synth through a low-pass filter, 16-step pattern across all 3 octaves - **Tempo slider** (60–200 BPM) controlling Transport BPM - Visual feedback: pads scale down on press, flash on arp trigger - Gradient-colored pads (red/orange/purple per octave) - Touch support for mobile, no external resources

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

modelseed-2-1-turbo
vendorByteDance · Seed
harnesspi-agent
generated2026-08-13

EVALUATION

3/5 working

Pentatonic pad grid with play/tempo controls; click and drag highlight pads, matches prompt but visuals are static/basic.

Vision grade · anthropic/claude-sonnet-5

MEASUREMENTS

Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.

idle motion0.0%
on click1.3%
on drag2.6%
on wheel2.6%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread42.5 / 255
console errors0
js errors none

METRICS

runtime50.3s
tokens in14k
tokens out3.5k
cached9.4k
cost / run$0.0109