Drum machine · grok-4.3

Output generated Cost / run $0.0256 Runtime 63.6s

Prompt for this run

Build a 16-step drum machine with a clickable grid for kick, snare, hi-hat, and clap, all sounds synthesized with the Web Audio API, plus play/stop and an adjustable BPM.

⛨ 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

modelgrok-4.3

vendorxAI · Grok

harnesspi-agent

generated2026-07-22

METRICS

runtime63.6s

tokens in16k

tokens out6.4k

cached9.5k

cost / run$0.0256

Transcript · 8 messages

user

Build a 16-step drum machine with a clickable grid for kick, snare, hi-hat, and clap, all sounds synthesized with the Web Audio API, plus play/stop and an adjustable BPM.

assistant

thinking

The task is: "Build a 16-step drum machine with a clickable grid for kick, snare, hi-hat, and clap, all sounds synthesized with the Web Audio API, plus play/stop and an adjustable BPM. Write it ALL in...The task is to build a 16-step drum machine using Web Audio API, all in one index.html file, no external resources.

I need:

- Grid: 4 rows (instruments: kick, snare, hi-hat, clap), 16 columns (steps).

- Clickable: toggle pattern for each instrument 16 steps.

- Play/Stop button.

- Adjustable BPM (e.g., slider 60-200).

- All sounds synthesized with Web Audio API.

- Self-contained, runs sandboxed.

- CSS in <style>, JS in <script>, inline.

- End with index.html present in current dir /workspace.

→ bash {"command":"ls -la /workspace"}

toolResult

total 4 drwxrwxrwx 2 node node 64 Jul 22 16:54 . drwxr-xr-x 1 root root 4096 Jul 22 16:54 ..

assistant

thinking

The directory is empty. I need to create index.html with a self-contained 16-step drum machine.
The task is to build a 16-step drum machine using Web Audio API, all in a single HTML file with inline CSS and JS. It needs a clickable grid for kick, snare, hi-hat, clap, play/stop, and adjustable BPM.

→ write /workspace/index.html (21120 bytes)

toolResult

Successfully wrote 21120 bytes to /workspace/index.html

assistant

thinking

The file has been written successfully.

→ bash {"command":"ls -la /workspace && wc -l /workspace/index.html"}

toolResult

total 28 drwxrwxrwx 3 node node 96 Jul 22 16:55 . drwxr-xr-x 1 root root 4096 Jul 22 16:54 .. -rw-r--r-- 1 node node 21130 Jul 22 16:55 index.html 664 /workspace/index.html

assistant

thinking

The self-contained index.html file has been successfully created with a complete 16-step drum machine implementation. All requirements are met:

Done! `index.html` is ready — a fully self-contained 16-step drum machine with: - Clickable 4×16 grid (kick/snare/hi-hat/clap) - Web Audio API synthesized sounds (kick, snare, hi-hat, clap) - Play/pause toggle + Stop - BPM slider (60–200) that adjusts in real-time while playing - Step highlighting + keyboard shortcuts (Space / S)