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Piano synth · qwen-2.5-72b-instruct

Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.

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transcript · 5 messages
user

Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.

assistant
write index.html (3284 bytes)
bash {"command":"ls"}
toolResult

Successfully wrote 3284 bytes to index.html

toolResult

tone.min.js

assistant

The single-page web app has been created and saved to `index.html`. It includes a playable piano keyboard that uses the `tone.min.js` library to synthesize notes with an ADSR envelope. The keys can be played using the mouse and the specified computer keys (a, s, d, f, g, h, j, k, l). You can now open `index.html` in a web browser to test the piano keyboard.

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

modelqwen-2.5-72b-instruct
vendorQwen
harnesspi-agent
generated2026-08-01

EVALUATION

2/5 partial

Small static piano keyboard renders with labels turning blue on interaction, but no visible key press/animation or black keys.

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 drag0.0%
on wheel0.0%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread10.3 / 255
console errors0
js errors
  • Start time must be strictly greater than previous start time

METRICS

runtime34.7s
tokens in4.7k
tokens out1.0k
cached0
cost / run$0.0021