dataviz

dataviz is a skill for Claude Code, Codex from QwenLM/qwen-code. It costs 26 tokens per session (457 once invoked), scanned A, original, Apache-2.0.

A set of guidelines for choosing and designing charts, graphs, dashboards, maps, and other ways to show data visually.

In plain words
What is it for?
Use it when creating data visualizations to choose a chart type, write an informative title or annotation, select colors, and check for common design problems.
Why use it?
It helps match the visual format to the question the data should answer and checks whether colors are clear and distinguishable.

Skill for Claude CodeCodex

About the project

Qwen Code is an open-source AI coding agent that runs in a terminal and helps developers work with code through language models. It supports multiple model providers and can also be used through IDEs, desktop software, SDKs, and messaging bots.

QwenLM/qwen-code · 27,620 stars · on GitHub

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.

agentmods
npx agentmods add skills/qwenlm/qwen-code/dataviz
Any agent
npx skills add QwenLM/qwen-code --skill dataviz
Clone the repo
git clone --depth 1 https://github.com/QwenLM/qwen-code

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/qwenlm/qwen-code/dataviz.svg)](https://agentmods.dev/skills/qwenlm/qwen-code/dataviz)
Your own site
<a href="https://agentmods.dev/skills/qwenlm/qwen-code/dataviz"><img src="https://agentmods.dev/badge/skills/qwenlm/qwen-code/dataviz.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 457 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00026 $0.00457
Opus 5 $0.00013 $0.00229
Sonnet 5 $0.00005 $0.00091
Haiku 4.5 $0.00003 $0.00046

Measured 5d ago against content hash 1c9c7f32c9c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 5d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/validate_palette.js, scripts/validate_palette.test.js), 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.

packages/core/src/skills/bundled/dataviz/SKILL.md · 51 lines

What it actually says

Dataviz

Use this skill before producing a chart, dashboard, map, or data visualization.

Workflow

  1. Identify the analytic task: comparison, trend, distribution, relationship, ranking, part-to-whole, geography, or status monitoring.
  2. Choose the simplest chart form that answers that task. Read references/choosing-a-form.md when the form is not obvious.
  3. Write the finding into the title, subtitle, axis label, or direct annotation. A viewer should know what changed, what is high or low, or what decision the chart supports.
  4. Pick colors from references/palette.md, or validate any custom palette with the script below.
  5. Check references/anti-patterns.md before finalizing the design.

Palette Validation

Resolve paths relative to the skill base directory shown above this skill body. Do not assume $QWEN_SKILL_ROOT is set for normal shell commands.

Run:

node <skill-base-directory>/scripts/validate_palette.js '#1d4ed8,#b45309,#166534' --mode light

Treat FAIL as a required palette change. Treat WARN as acceptable only when the chart also uses labels, shape, texture, ordering, or another secondary encoding.

Mark Rules

  • Use categorical palettes for unordered groups; use sequential or diverging ramps only for ordered values.
  • Prefer direct labels over legends when the chart has a small number of series.
  • Keep gridlines subtle and fewer than the data marks.
  • Avoid dual axes unless both series share a clearly explained transformation.
  • Do not rely on color alone for critical distinctions.
  • Keep dashboards scan-friendly: align cards, use consistent number formats, and reserve saturated color for important state changes.
Files

What ships with it

5 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. 5d ago First seen · 51 lines · 26 tokens per session scan A 1c9c7f32c9c3

Subscribe to this mod's changes

dataviz is a skill published in the GitHub repository QwenLM/qwen-code (27,620 stars, last pushed yesterday), licensed Apache-2.0. It adds 26 tokens to every session and 457 once invoked, about $0.0001 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 2026-08-30.

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