chart-image

chart-image is a skill for Claude Code, Codex from malue-ai/dazee-small. It costs 25 tokens per session (663 once invoked), scanned A, original, MIT.

A chart-making skill that turns data into PNG images using Python's matplotlib library. It supports common charts such as bar, line, pie, scatter, horizontal bar, and stacked charts.

In plain words
What is it for?
Use it to visualize spreadsheet or CSV data, compare categories, show trends, display proportions, examine relationships, or include charts in reports.
Why use it?
It removes the need to write chart code from scratch when you need a visual summary of data. It also provides settings for readable labels, colors, and image resolution.

Skill for Claude CodeCodex

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

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/malue-ai/dazee-small/chart-image
Any agent
npx skills add malue-ai/dazee-small --skill chart-image
Clone the repo
git clone --depth 1 https://github.com/malue-ai/dazee-small

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 chart-image

README.md
[![agentmods](https://agentmods.dev/badge/skills/malue-ai/dazee-small/chart-image.svg)](https://agentmods.dev/skills/malue-ai/dazee-small/chart-image)
Your own site
<a href="https://agentmods.dev/skills/malue-ai/dazee-small/chart-image"><img src="https://agentmods.dev/badge/skills/malue-ai/dazee-small/chart-image.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 663 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 5.1 $0.00025 $0.00663
Opus 5 $0.00013 $0.00331
Sonnet 5 $0.00005 $0.00133
Haiku 4.5 $0.00003 $0.00066

Measured 5d ago against content hash fa56fab80345, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

chart-image 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.

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.

instances/xiaodazi/skills/chart-image/SKILL.md · 77 lines

What it actually says

数据图表生成

从数据生成高质量图表图片,支持柱状图、折线图、饼图、散点图等常见类型。

使用场景

  • 用户说「把这些数据做成图表」「画一个柱状图」
  • 用户提供了 Excel/CSV 数据,需要可视化
  • 与 excel-analyzer 配合,分析后自动生成图表
  • 用户说「做一个销售趋势图」「画个饼图看看占比」

执行方式

基本用法

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import matplotlib.font_manager as fm

# 中文字体支持
plt.rcParams['font.sans-serif'] = ['PingFang SC', 'Microsoft YaHei', 'SimHei', 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False

fig, ax = plt.subplots(figsize=(10, 6))

# 示例:柱状图
categories = ['一月', '二月', '三月', '四月']
values = [120, 150, 180, 200]
ax.bar(categories, values, color='#4A90D9')

ax.set_title('月度销售额', fontsize=16, fontweight='bold')
ax.set_ylabel('金额(万元)')

plt.tight_layout()
plt.savefig('/tmp/chart.png', dpi=150, bbox_inches='tight')
plt.close()

支持的图表类型

类型 方法 适用场景
柱状图 ax.bar() 分类对比
折线图 ax.plot() 趋势变化
饼图 ax.pie() 占比分析
散点图 ax.scatter() 相关性分析
水平柱状图 ax.barh() 排名对比
堆叠图 ax.bar(bottom=) 组成分析

样式规范

  • 默认配色:#4A90D9(蓝)、#E85D75(红)、#50C878(绿)、#F5A623(橙)
  • 分辨率:150 DPI(屏幕查看)或 300 DPI(打印)
  • 中文标题和标签必须设置中文字体
  • 图例放在不遮挡数据的位置

输出规范

  • 图表保存为 PNG 文件到临时目录
  • 返回文件路径供用户查看或嵌入报告
  • 自动选择最合适的图表类型(用户未指定时)
  • 数据量大时自动截断或聚合,避免图表拥挤
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 · 77 lines · 25 tokens per session scan A fa56fab80345

Subscribe to this mod's changes

chart-image is a skill published in the GitHub repository malue-ai/dazee-small (36 stars, last pushed 5mo ago), licensed MIT. It adds 25 tokens to every session and 663 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 2026-08-31.

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