beautiful-data-viz

beautiful-data-viz is a skill for Claude Code from fmschulz/omics-skills. It costs 37 tokens per session (1,410 once invoked), scanned A, original, MIT.

A set of practices for making clear, publication-quality static charts with Matplotlib or Seaborn, two Python tools for creating graphs. It focuses on readable labels, accessible colors, compact layouts, and showing the data clearly.

In plain words
What is it for?
Creating scientific figures for papers, notebooks, and presentations; choosing suitable chart types; improving labels and layouts; and making visualizations easier to interpret.
Why use it?
Charts can be difficult to read when they use poor scales, clutter, or colors that are hard to distinguish. These guidelines help match the chart type and styling to the message.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the omics-skills plugin — 34 skills, 4 agents shipped together

Good fit Creating scientific figures for papers, notebooks, and presentations; choosing suitable chart types; improving labels and layouts; and making visualizations easier to interpret.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fmschulz/omics-skills/beautiful-data-viz
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 fmschulz/omics-skills --skill beautiful-data-viz
Clone the repo
git clone --depth 1 https://github.com/fmschulz/omics-skills

Made for: Claude Code.

Or install omics-skills, the plugin that ships this one along with the rest of its 34 skills, 4 agents.

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 beautiful-data-viz

README.md
[![agentmods](https://agentmods.dev/badge/skills/fmschulz/omics-skills/beautiful-data-viz/github.svg)](https://agentmods.dev/skills/fmschulz/omics-skills/beautiful-data-viz)
Your own site
<a href="https://agentmods.dev/skills/fmschulz/omics-skills/beautiful-data-viz"><img src="https://agentmods.dev/badge/skills/fmschulz/omics-skills/beautiful-data-viz/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 beautiful-data-viz

Your own site · 80×15
<a href="https://agentmods.dev/skills/fmschulz/omics-skills/beautiful-data-viz"><img src="https://agentmods.dev/badge/skills/fmschulz/omics-skills/beautiful-data-viz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,410 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Memory Poisoning · line 37
    Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.
    Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
How audits are shown
Origin original No closer match found 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 $0.00037 $0.01410
Opus 5 $0.00018 $0.00705
Sonnet 5 $0.00007 $0.00282
Haiku 4.5 $0.00004 $0.00141

Measured 3d ago against content hash 7cfab0efb94e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

beautiful-data-viz 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 3d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (assets/beautiful_style.py, scripts/export_fixture.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.

skills/beautiful-data-viz/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Beautiful Data Viz

Create polished, publication-ready visualizations in Python/Jupyter with strong typography, clean layout, accessible color choices, and high data-ink. The default style is restrained: show the data, remove non-data decoration, label directly when possible, and add only the context needed to interpret the finding.

Instructions

  1. Clarify the message, comparison context, audience, and medium (notebook/paper/slides). If the data is one or two values, prefer a sentence; if it is a short lookup list, prefer a table.
  2. Choose the simplest chart type that answers the question. Prefer horizontal bars for ranked categories, small multiples for >4 series or dual-axis temptations, slopegraphs for before/after changes, and sparklines for compact trend context.
  3. Start gray-first: neutral series by default, one accent for the finding, and no rainbow palettes. Select an appropriate palette type only when color is carrying real information.
  4. Remove chart junk before styling: no 3D, pie charts only if explicitly requested, no decorative borders, no heavy grids, no gradient fills, no dual y-axes.
  5. Use direct labels instead of legends when series count and space allow. Keep legends only when direct labels would collide or obscure data.
  6. For manuscript/paper figures, do not add in-plot titles or subtitles; use axis labels, legends/direct labels, panel letters, and the manuscript caption instead.
  7. Place the figure caption/legend text BELOW the figure, directly under it — never above. In a notebook this means the figure (code) cell comes first and the caption (markdown) cell immediately follows it; in a document the caption goes beneath the image. A reader sees the figure, then its legend. (Journal convention: legends sit below the figure.)
  8. Apply the shared style helpers, then build the plot.
  9. Validate readability, accessibility, and export quality at the target size.
  10. Use pixi.toml for a project figure environment, or scripts/export_fixture.py — a PEP 723 script with exact version pins — for a reproducible smoke test. Annotation helpers inherit the active light/dark text color unless an explicit color is supplied.

Read the full file on GitHub · 114 lines

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago Changed 7cfab0efb94e
  2. 9d ago First seen · 114 lines · 37 tokens per session scan A 59c704e5bc5d

Subscribe to this mod's changes

beautiful-data-viz is a skill published in the GitHub repository fmschulz/omics-skills (7 stars, last pushed 4d ago), licensed MIT. It adds 37 tokens to every session and 1,410 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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