Openchart

Q: What is a Claude Code skill and how does the Openchart skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Openchart is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Content · Sub-category: image-design · Last updated: 2026-05-21

Generates OpenChart (https://github.com/tryopendata/openchart) chart, table, graph, sankey, and tilemap specs from data, and guides editorial design decisions. Use when creating visualizations, building charts, rendering data tables, generating VizSpec JSON, creating network graphs, building sankey/flow diagrams, building US state tile grid maps, answering questions about OpenChart types and encoding rules, or making design decisions about chart type selection, color strategy, typography, annotations, and editorial framing. Also covers custom D3.js infographics for cases beyond declarative specs.

About this skill (catalog notes)

Openchart includes pricing or quota commentary; 11 code blocks for direct copy-paste. At roughly 3,837 words the SKILL.md is on the longer end of the catalog distribution.

Original author: tryopendata
Indexed lastmod: 2026-05-21
Catalog position: Content · image-design
Indexed related skills: 10

How Openchart fits the catalog

Openchart sits in the Content category under the image-design sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

> Note: SVG design capabilities (logos, icons, graphics) have moved to the opendesign plugin. Install with /plugin install opendesign@opendata-skills.

<link rel="stylesheet" href="https://esm.sh/@opendata-ai/openchart-vanilla/styles.css">

What this skill does

Openchart is a community-contributed Claude Code skill in the image-design sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/openchart/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when creating visualizations, building charts, rendering data tables, generating VizSpec JSON, creating network graphs, building sankey/flow diagrams, building US state tile grid maps, answering questions about OpenChart types and encoding rules, or making design decisions about chart type selection, color strategy, typography, annotations, and editorial framing. Also covers custom D3.

Who uses this skill

The Openchart Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/openchart
curl -L https://claudskills.com/skills/openchart/SKILL.md \
  -o ~/.claude/skills/openchart/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/openchart/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/openchart/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\openchart\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Openchart Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/openchart/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Openchart skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Openchart skill?

Use Openchart when your Claude Code task falls under the Content category — specifically in the image design area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Openchart" or describe the task and let Claude pick). Browse related skills at /category/content/.

What is a Claude Code skill and how does the Openchart skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Openchart is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/tryopendata/openchart
Author: tryopendata

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

tryopendata. (2026). Openchart [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/openchart/

BibTeX

@misc{openchart-2026,
  author    = {tryopendata},
  title     = {Openchart [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/openchart/}
}

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Badge

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