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Matrix digital rain · seed-2.0-code

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 · 6 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'll create a Matrix digital rain effect as a single HTML file with embedded CSS and JavaScript. The effect will feature:

1. Full-screen black background
2. Columns of falling green katakana glyphs
3. Trailing fade effect
4. Brighter leading character for each column

Let me write the complete implementation.
write /tmp/ws/index.html (5056 bytes)
toolResult

Successfully wrote 5056 bytes to /tmp/ws/index.html

assistant
thinking
The Matrix digital rain effect has been created as a single HTML file. The implementation features:

1. Full-screen black canvas
2. Columns of falling katakana characters (with some numbers and symbols for variety)
3. Trailing fade effect using semi-transparent black overlays
4. Brighter leading characters (white/light green) for each column
5. Variable column speeds for a natural rain-like effect

Let me verify the file exists and is complete.
bash {"command":"ls -la /tmp/ws/index.html"}
toolResult

-rw-r--r--. 1 node node 5198 Aug 13 01:28 /tmp/ws/index.html

assistant
thinking
The file has been created successfully. Let me provide a brief summary of what was implemented.

The Matrix digital rain effect has been created as a single HTML file at `/tmp/ws/index.html`. The implementation includes: - **Full-screen canvas** with black background - **Falling columns** of green katakana characters (with numbers/symbols for variety) - **Trailing fade effect** using semi-transparent overlays - **Brighter leading characters** (white/light green) for each column - **Variable column speeds** for natural rain-like movement - **Responsive design** that adapts to window resizing The file is completely self-contained with no external dependencies and runs fully sandboxed.

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

modelseed-2.0-code
vendorByteDance · Seed
harnesspi-agent
generated2026-08-13

EVALUATION

4/5 working

Classic Matrix digital rain with green katakana columns, fading trails, and bright leading chars, animates continuously and consistently.

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 motion8.2%
on click40.6%
on drag52.1%
on wheel51.9%
on enter + space54.0%
on arrow keys50.3%
on w/a/s/d51.3%
frame spread17.8 / 255
console errors0
js errors none

METRICS

runtime24.1s
tokens in8.2k
tokens out1.7k
cached6.3k
cost / run$0.0060