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Matrix digital rain · claude-opus-4.8

Create the Matrix digital rain effect on a full-screen black canvas: columns of falling green katakana glyphs with a trailing fade and a brighter leading character.

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transcript · 4 messages
user

Create the Matrix digital rain effect on a full-screen black canvas: columns of falling green katakana glyphs with a trailing fade and a brighter leading character.

assistant
thinking
I'm creating the Matrix digital rain effect.
write /workspace/index.html (2363 bytes)
toolResult

Successfully wrote 2363 bytes to /workspace/index.html

assistant

Created `/workspace/index.html` — a self-contained Matrix digital rain effect. Key features: - **Full-screen black canvas** that resizes with the window - **Falling katakana glyphs** (plus digits) in columns - **Trailing fade** via a translucent black overlay drawn each frame (`rgba(0,0,0,0.06)`) - **Brighter leading character** with a near-white glow (`shadowBlur`), followed by dimmer green trails - Randomized start positions and reset timing so columns feel organic - Frame-throttled (~45ms) for that classic Matrix cadence Open it directly in any browser — no network or external resources required.

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

modelclaude-opus-4.8
vendorAnthropic · Claude
harnesspi-agent
generated2026-07-08

EVALUATION

4/5 working

Classic Matrix digital rain with fading green katakana columns and brighter leading characters, animates continuously; inputs don't add new behavior but rain persists correctly.

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 motion18.8%
on click43.9%
on drag53.1%
on wheel44.1%
on enter + space45.0%
on arrow keys47.9%
on w/a/s/d44.9%
frame spread23.9 / 255
console errors0
js errors none

METRICS

runtime21.9s
tokens in1.2k
tokens out1.4k
cached4.5k
cost / run$0.0441