dataviz

dataviz is a skill for Claude Code, Codex from DuvvuruDeepakReddy18/system_prompts_leaks. It costs 268 tokens per session (1,915 once invoked), scanned A, a copy of Data Visualization, CC0-1.0.

A set of instructions for creating charts, graphs, plots, dashboards, or other visual displays of data.

In plain words
What is it for?
It helps design data visualizations, select color systems, and test palettes for readability and color-vision accessibility.
Why use it?
It provides checks for choosing a suitable chart form and for validating colors instead of relying on visual guesswork. It applies whether the result is code, HTML, SVG, an image, or a shared chart.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps design data visualizations, select color systems, and test palettes for readability and color-vision accessibility.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add DuvvuruDeepakReddy18/system_prompts_leaks --skill dataviz
Clone the repo
git clone --depth 1 https://github.com/DuvvuruDeepakReddy18/system_prompts_leaks

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dataviz

README.md
[![agentmods](https://agentmods.dev/badge/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz/github.svg)](https://agentmods.dev/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz)
Your own site
<a href="https://agentmods.dev/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz"><img src="https://agentmods.dev/badge/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dataviz

Your own site · 80×15
<a href="https://agentmods.dev/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz"><img src="https://agentmods.dev/badge/skills/duvvurudeepakreddy18/system_prompts_leaks/dataviz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 268 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,915 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00268 $0.01915
Opus 5 $0.00134 $0.00958
Sonnet 5 $0.00054 $0.00383
Haiku 4.5 $0.00027 $0.00192

Measured 12d ago against content hash 05cdb32c2ca0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

dataviz scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/validate_palette.js, scripts/validate_palette.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

86% identical to Data Visualization — 88 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

Anthropic/Claude Code/bundled-skills/dataviz/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Visualization

A chart is read by people and executed by you. This skill turns "make it look good" into a procedure with checks, so the result is right by construction rather than by taste.

The method here is design-system-agnostic. Nothing in the procedure, the form heuristic, the six checks, or the mark specs is specific to one product. A design system supplies a small set of parameters (its ramps, a categorical order, a diverging pair, a status palette, a texture, its surfaces, its filter components); the method consumes them unchanged. A validated default palette is the reference instance, fully specified in references/palette.md. To target your brand, read that file's structure and substitute its values — touch nothing else.

The single most important habit: the color part is computable, so compute it. Never eyeball whether a palette is colorblind-safe — run scripts/validate_palette.js.

The procedure — do these in order

Color comes LAST. Most bad charts pick colors first.

  1. Pick the form. What is the data's job — magnitude, identity, polarity, a single headline, change-over-time? The job picks the chart type, and sometimes the answer is not a chart (a stat tile or hero number). → references/choosing-a-form.md
  2. Assign color by the job it does. Categorical (identity), sequential (magnitude), diverging (polarity), or status (state) — each has one rule. Assign categorical hues in fixed order, never cycled. → references/color-formula.md
  3. VALIDATE the palette — run the script, don't reason about ΔE. node scripts/validate_palette.js "<hex,hex,…>" --mode light (relative to this skill's base directory — or load it as <script type="module"> in the chart's own page, where it reads data-palette off <body> and logs a console.table report). It returns pass/fail on the lightness band, chroma floor, adjacent-pair CVD separation, and contrast. Fix anything that FAILs before continuing. Re-run for --mode dark with that mode's surface.
  4. Apply mark specs & spacers. Thin marks, 4px rounded data-ends anchored to the baseline, 2px lines, ≥8px markers, a 2px surface gap between fills (stacked segments and adjacent bars alike) and a 2px surface ring on overlapping marks, selective direct labels. → references/marks-and-anatomy.md
  5. Add the hover layer — by default. An HTML/SVG chart is interactive; ship a crosshair+tooltip on line/area and a per-mark hover tooltip on bar/dot/cell. The only form that skips it is a bare stat tile with no plot. Hit targets bigger than the mark; filters in one row above the charts. → references/interaction.md
  6. Final accessibility pass. For ≥ 2 series a legend is always present and ≤ 4 are also direct-labeled (a single series needs no legend box — the title names it), so identity is never color-alone; a table view exists; dark mode is selected — its own steps from the same ramps, validated against the dark surface, not an automatic flip; texture is available for the CVD/print/forced-colors case.
  7. Render it and look at it. The validator checks color, not layout — open or screenshot the output and eyeball it for label collisions, geometry, and overflow before calling it done.

Read the full file on GitHub · 113 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 113 lines · 0 tokens per session scan A 05cdb32c2ca0

Subscribe to this mod's changes

dataviz is a skill published in the GitHub repository DuvvuruDeepakReddy18/system_prompts_leaks (5 stars, last pushed 2mo ago), licensed CC0-1.0. It adds 268 tokens to every session and 1,915 once invoked, about $0.0013 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to Data Visualization, differing in 88 lines, and is treated as a copy.

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