zebbern/claude-code-guide · skills/chart-image/SKILL.md
chart-image skillA
Generate publication-quality PNG chart images from data, supporting line, bar, area, candlestick, pie, and heatmap charts. Triggers when the user asks to visualize data, create a graph, plot a time series, or generate a chart for a report, alert, or dashboard. Runs as a lightweight, headless Node.js process without a browser.
Latest version
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[](https://markdownregistry.com/a/art_ygmddoiuqlwe6yp6)
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Versions
Audit of the latest version
A 17 of 17 checks passed. Deterministic, no model, same answer every run.
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10628 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
GitHub
zebbern/claude-code-guide · 4,603 stars · license MIT · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ygmddoiuqlwe6yp6 GET https://markdownregistry.com/api/v1/resolve?ref=zebbern/claude-code-guide/chart-image GET https://markdownregistry.com/api/v1/blob/7399868d1e6ed2193b0294a927078b96e0626dd2ab654826f0b7f8dd8103a873