Openchart

Quality score: 70/100 · Category: Content · Sub-category: image-design

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.

What this skill does

Openchart is a production-ready Claude Code skill (quality score 70/100) 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 skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

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.

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.