Agent skill

Add Viz Entry

by holtzy in holtzy/dataviz-inspiration

Add a new data-visualization entry to the dataviz-inspiration gallery.

No licenceAuto-check passedData & Analytics

Install Add Viz Entry

skills CLI
$ npx skills add holtzy/dataviz-inspiration --skill add-viz-entry -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install holtzy/dataviz-inspiration add-viz-entry --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/holtzy/dataviz-inspiration.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/add-viz-entry .claude/skills/add-viz-entry && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
add-viz-entry
GitHub stars
147
Token cost
~2.9k tokens
SKILL.md length
1,314 words
Files
1
Skills in repo
2
Repo updated
First seen
Licence
None found

At a glance

Add a new data-visualization entry to the dataviz-inspiration gallery.

  • Works in 7 steps: Find the next id. Ids are split across… → Get the images. When the user… → Resolve the url = the ORIGINAL project,… → …
  • The user pastes messy content (a link
  • SKILL.md covers Files & vocab, Schema (VizItem), Procedure and Example entry (id 319), plus 2 more sections
  • Calls magick and npx; reaches cw.com.tw

What it does

Add Viz Entry is an agent skill from holtzy/dataviz-inspiration. Add a new data-visualization entry to the dataviz-inspiration gallery. Use when the user pastes messy content (a link, screenshots, notes) about a viz and wants it added to the site. Handles the viz-list.ts entry, image placement, chart-type tagging, and the two descriptions.

Its SKILL.md is about 2.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Data & Analytics, covering Data visualization. The repository describes itself as: A collection of viz I love.

When your agent uses it

  • The user pastes messy content (a link
  • Notes) about a viz and wants it added to the site

Example prompts

  • “/add-viz-entry”

Requirements

  • Python 3
  • Node.js

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Find the next id. Ids are split across two files now, so scan BOTH and take the max
  2. Get the images. When the user pastes/attaches screenshots, Claude Code embeds the
  3. Resolve the url = the ORIGINAL project, not where the user found it (a LinkedIn/
  4. Write the two descriptions in ENGLISH (the list is English even when the viz is in
  5. Judgment calls — pick a sensible value, then FLAG it for the user (these are rarely in
  6. Bump the count. Increment TOTAL_VIZ_COUNT by 1 in util/viz-types.ts (it drives the
  7. Verify: grep -n "id: ", confirm both image files exist in public/img/, and

What it can do on your machine

Read from SKILL.md and the folder at commit 783f466. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • magick
    • npx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • cw.com.tw

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Add Viz Entry loads about 2.9k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 1,314 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~2.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,314 words (~2,900 tokens).

“Turn a messy paste (a URL, one or two screenshots, a few notes) into a clean VizItem appended to util/viz-list.ts, with images placed in public/img/.”

— opening of SKILL.md by holtzy
name
add-viz-entry

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/add-viz-entry of holtzy/dataviz-inspiration.

Open the folder on GitHubat commit 783f466

Compare with similar skills

Add Viz Entry next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Add Viz Entry compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Add Viz Entry this skillholtzy/dataviz-inspiration147—~2.9kAutomated safety check: PassNone
MatplotlibzLanqing/codex-claude-academic-skills4.7k17 repos~2.9kAutomated safety check: PassMIT
Chart Visualizationbytedance/deer-flow84k1 repos~840Automated safety check: PassMIT
Scientific Visualizationmims-harvard/OptimusKG14719 repos~6.3kAutomated safety check: PassMIT
SeabornzLanqing/codex-claude-academic-skills4.7k15 repos~4.9kAutomated safety check: PassBSD-3-Clause
Plot From DataTrae1ounG/paper-plot-skills8721 repos~583Automated safety check: PassNone

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More from holtzy/dataviz-inspiration

  • Linkedin Post

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    Draft a LinkedIn post announcing the latest data-viz additions to dataviz-inspiration.com, and stage the highlighted projects' images in public/linkedin/.

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Questions about Add Viz Entry

What does Add Viz Entry do?

Add a new data-visualization entry to the dataviz-inspiration gallery. Add Viz Entry is an agent skill from holtzy/dataviz-inspiration. Add a new data-visualization entry to the dataviz-inspiration gallery.

When should I use Add Viz Entry?

Add Viz Entry fits situations like: the user pastes messy content (a link; notes) about a viz and wants it added to the site.

How do I install Add Viz Entry in Claude Code?

Run `npx skills add holtzy/dataviz-inspiration --skill add-viz-entry -a claude-code`. Or copy the skill folder (.claude/skills/add-viz-entry in holtzy/dataviz-inspiration) into .claude/skills/add-viz-entry in your project. Claude Code loads it when a task matches its description.

How do I install Add Viz Entry in Codex?

Run `npx skills add holtzy/dataviz-inspiration --skill add-viz-entry -a codex`. Or copy the skill folder (.claude/skills/add-viz-entry in holtzy/dataviz-inspiration) into .agents/skills/add-viz-entry in your project. Codex loads it when a task matches its description.

Can I use Add Viz Entry in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add holtzy/dataviz-inspiration --skill add-viz-entry -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/add-viz-entry, .gemini/skills/add-viz-entry, .github/skills/add-viz-entry and .opencode/skills/add-viz-entry in your project.

What does Add Viz Entry need to run?

Going by SKILL.md and its folder, Add Viz Entry needs the command-line tools its instructions call (magick and npx). Our summary lists: Python 3; Node.js.

Does Add Viz Entry access the network?

SKILL.md names 1 domain. In commands or code: cw.com.tw; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Add Viz Entry safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Add Viz Entry use?

No licence was found for Add Viz Entry or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Add Viz Entry use?

About 2.9k tokens (SKILL.md is roughly 12k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Add Viz Entry?

Skills that share tags, products or a category with Add Viz Entry: Matplotlib (zLanqing/codex-claude-academic-skills, 4.7k stars), Chart Visualization (bytedance/deer-flow, 84k stars), Scientific Visualization (mims-harvard/OptimusKG, 147 stars) and Seaborn (zLanqing/codex-claude-academic-skills, 4.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Add Viz Entry?

holtzy (a GitHub user) maintains it in holtzy/dataviz-inspiration, which has 147 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 7, 2026.

Source: holtzy/dataviz-inspiration on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.