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Arpeggiator pad · gpt-4.1-nano

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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transcript · 9 messages
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
read {"path":"index.html"}
read {"path":"tone.min.js"}
toolResult

ENOENT: no such file or directory, access '/tmp/ws/index.html'

toolResult

/*! For license information please see Tone.js.LICENSE.txt */ [Showing lines 1-1 of 3 (50.0KB limit). Use offset=2 to continue.]

assistant
read {"path":"tone.min.js"}
toolResult

/*! For license information please see Tone.js.LICENSE.txt */ [Showing lines 1-1 of 3 (50.0KB limit). Use offset=2 to continue.]

assistant

I have loaded the tone.min.js library. Next, I will create a complete HTML file with a CSS grid of pentatonic pads, a play/stop button for the arpeggiator, and the necessary JavaScript to handle interactions, synthesis, and sequencing.

write index.html (4049 bytes)
toolResult

Successfully wrote 4049 bytes to index.html

assistant

The complete HTML file has been created. It features a grid of pentatonic pads, a play/stop button for an arpeggiator, and an adjustable tempo slider. The setup synthesizes sound with a reverb effect, and clicking pads toggles active notes in the sequence. Press "Play" to start the arpeggiator and "Stop" to halt it.

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

modelgpt-4.1-nano
vendorOpenAI
harnesspi-agent
generated2026-08-01

EVALUATION

2/5 partial

Static 5x4 pad grid with Play/Tempo controls; visuals never change on click, drag, wheel, or keys, only tempo slider focus highlights.

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 click0.0%
on drag0.1%
on wheel0.0%
on enter + space7.5%
on arrow keys7.5%
on w/a/s/d0.0%
frame spread14.3 / 255
console errors0
js errors none

METRICS

runtime12.6s
tokens in6.8k
tokens out1.6k
cached2.3k
cost / run$0.0011