cjk-viz

cjk-viz is a skill for Claude Code, Codex from Zaoqu-Liu/ScienceClaw. It costs 71 tokens per session (1,779 once invoked), scanned A, original, MIT.

A setup helper for finding fonts that can display Chinese, Japanese, and Korean text in charts. It configures plotting libraries so labels, titles, legends, and minus signs render correctly.

In plain words
What is it for?
Use it before creating matplotlib, seaborn, or Plotly graphics that contain Chinese, Japanese, or Korean text.
Why use it?
Without a suitable font, CJK characters may appear as empty squares or become unreadable in exported plots. The helper checks what is actually installed instead of assuming a particular font exists.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it before creating matplotlib, seaborn, or Plotly graphics that contain Chinese, Japanese, or Korean text.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zaoqu-liu/scienceclaw/medge-cjk-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 Zaoqu-Liu/ScienceClaw --skill medge-cjk-viz
Clone the repo
git clone --depth 1 https://github.com/Zaoqu-Liu/ScienceClaw

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 cjk-viz

README.md
[![agentmods](https://agentmods.dev/badge/skills/zaoqu-liu/scienceclaw/medge-cjk-viz/github.svg)](https://agentmods.dev/skills/zaoqu-liu/scienceclaw/medge-cjk-viz)
Your own site
<a href="https://agentmods.dev/skills/zaoqu-liu/scienceclaw/medge-cjk-viz"><img src="https://agentmods.dev/badge/skills/zaoqu-liu/scienceclaw/medge-cjk-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 cjk-viz

Your own site · 80×15
<a href="https://agentmods.dev/skills/zaoqu-liu/scienceclaw/medge-cjk-viz"><img src="https://agentmods.dev/badge/skills/zaoqu-liu/scienceclaw/medge-cjk-viz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,779 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 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 $0.00071 $0.01779
Opus 5 $0.00036 $0.00890
Sonnet 5 $0.00014 $0.00356
Haiku 4.5 $0.00007 $0.00178

Measured 8d ago against content hash 96230f4f53e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cjk-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 8d 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.

skills/medge-cjk-viz/SKILL.md · 186 lines

How it starts

The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CJK 可视化字体配置

何时使用

任何绘图代码中包含中文文本(标题、轴标签、图例、注释)时,必须在绘图前 执行字体检测。不要假设某个字体一定存在。

快速使用

方式一:导入 helper(推荐)

scripts/setup_cjk_font.py 复制到工作目录,或直接引用:

import sys, os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'skills/cjk-viz/scripts'))
from setup_cjk_font import setup_cjk_font

font_name = setup_cjk_font()  # 自动检测、配置、返回字体名
# 如果返回 None,说明系统无可用 CJK 字体,会打印警告

调用后 plt.rcParams 已经配置好,直接绘图即可。

方式二:内联代码片段

如果不想引入外部文件,在脚本开头加入:

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

def _setup_cjk():
    candidates = [
        'Noto Sans CJK SC', 'Noto Sans SC', 'Source Han Sans SC',
        'WenQuanYi Micro Hei', 'WenQuanYi Zen Hei',
        'Droid Sans Fallback', 'AR PL UMing CN',
        'SimHei', 'Microsoft YaHei', 'PingFang SC',
    ]
    available = {f.name for f in fm.fontManager.ttflist}
    for name in candidates:
        if name in available:
            plt.rcParams['font.sans-serif'] = [name, 'DejaVu Sans']
            plt.rcParams['axes.unicode_minus'] = False
            return name
    # 尝试从常见路径加载 .ttf
    search_paths = [
        '/usr/share/fonts', '/usr/local/share/fonts',
        os.path.expanduser('~/.local/share/fonts'),
        os.path.join(os.path.dirname(__file__), 'fonts'),
    ]
    for base in search_paths:
        for root, _, files in os.walk(base):
            for f in files:
                if f.lower().endswith('.ttf') and any(
                    k in f.lower() for k in ['noto', 'cjk', 'hei', 'han', 'wenquan', 'droid']
                ):
                    path = os.path.join(root, f)
                    fm.fontManager.addfont(path)
                    prop = fm.FontProperties(fname=path)
                    name = prop.get_name()
                    plt.rcParams['font.sans-serif'] = [name, 'DejaVu Sans']
                    plt.rcParams['axes.unicode_minus'] = False
                    return name
    print("⚠️  未找到 CJK 字体,中文可能显示为方块。")
    print("   安装建议: apt install fonts-noto-cjk 或 pip install matplotlib-cjk-fonts")
    return None

_cjk_font = _setup_cjk()

Read the full file on GitHub · 186 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. 8d ago First seen · 186 lines · 71 tokens per session scan A 96230f4f53e8

Subscribe to this mod's changes

cjk-viz is a skill published in the GitHub repository Zaoqu-Liu/ScienceClaw (60 stars, last pushed 5mo ago), licensed MIT. It adds 71 tokens to every session and 1,779 once invoked, about $0.0004 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 2026-09-03.

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