Drum machine · qwen3-235b-a22b-2507

Output saved · Stopped by an API error Cost / run $0.0070 Runtime 334.8s

A model request failed and its retries ran out. The output is the HTML saved before that.

Prompt for this run

Build a 16-step drum sequencer using the Web Audio API. 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. No third-party libraries are provided. Required behavior: - Show four labeled rows for kick, snare, hi-hat, and clap, each with 16 independently toggleable steps. Start with a simple audible pattern. - Treat the 16 steps as one bar of sixteenth notes in 4/4 time. Provide Play, Stop, Clear, and a BPM control from 60 to 180. - During playback, highlight the current step and synthesize the enabled drum voices. Editing steps or BPM must affect playback without creating duplicate sequences. - Stop cancels future hits and resets the playhead to the first step. Clear disables all steps. Starting again uses the currently displayed pattern. - Unlock audio through a user gesture and synthesize distinct percussion sounds from oscillators/noise and envelopes; do not load audio files. Verify: Toggle a step and start playback. Check that the playhead advances across the grid and responds to a BPM change. Stop and start again, checking that the displayed pattern is retained and the playhead restarts from the first step.

⛨ sandboxed Open in new tab ↗

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

modelqwen3-235b-a22b-2507

vendorQwen

harnesspi 0.87.1 · browser iteration

generated2026-10-09

METRICS

runtime334.8s

tokens in78k

tokens out3.4k

cached14k

cost / run$0.0070

Transcript · 33 messages

system

user

assistant

→ write index.html (12289 bytes)

toolResult

Successfully wrote to index.html

assistant

→ browser {"action":"reload"}

toolResult

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Drum Sequencer\nPlay\nStop\nClear\nBPM:\n120\nKick\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\nSnare\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\nHi-hat\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\nClap\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t","images":"model does not support images"}

assistant

→ browser {"action":"click","x":200,"y":150}

toolResult

assistant

→ browser {"action":"click","x":100,"y":50}

toolResult

assistant

→ browser {"action":"click","x":100,"y":100}

toolResult

assistant

→ browser {"action":"click","x":80,"y":200}

toolResult

assistant

→ browser {"action":"click","x":300,"y":80}

toolResult

assistant

→ browser {"action":"click","x":150,"y":250}

toolResult

assistant

→ browser {"action":"click","x":120,"y":300}

toolResult

assistant

→ browser {"action":"click","x":250,"y":180}

toolResult

assistant

→ browser {"action":"click","x":500,"y":120}

toolResult

assistant

→ browser {"action":"click","x":100,"y":400}

toolResult

assistant

→ browser {"action":"click","x":200,"y":450}

toolResult

assistant