evident-charts plugin
A plugin that teaches agents to make clear, honest charts and checks each before you see it: takeaway title, axes, labels, colors.
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- Last commit
Minimal access
Why this level
- The plugin runs local Python scripts to check data and charts.
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add plugins/evident-chartsDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- The plugin runs local Python scripts to check data and charts.
This is third-party code. Review the repository files before installing.
What it does
`evident-charts` helps Claude and other agents make clear charts and critique those you share. Before plotting it checks the data: totals mixed with their parts, duplicate rows and placeholder values. It then picks a chart type that fits the point, writes the takeaway into the title and cites the data publisher. A finished chart gets automated checks: overlapping labels, misleading axes and color problems, with matplotlib checked directly and other libraries through an SVG export. The agent then reviews the image: with a separate reviewer when the environment allows, otherwise by self-review, for up to three rounds. When asked for a critique the skill returns ranked fixes and states which checks it could not run.
Who it is for. Analysts and report authors who ask an agent for a chart for a slide, post or memo and do not want to fix rainbow colors and truncated axes.
Good fit when
- A sales table must become a chart for a LinkedIn post.
- A single chart on where the budget went goes onto a slide.
- A finished chart arrives as an image and needs critique and a fix.
- The chart title must state the takeaway, not just the topic.
Not a fit when
- An interactive panel or dashboard is needed, not a static picture.
- The graphic is not data-based: a schema, process diagram or infographic.
- The agent cannot run scripts and view images.
Example request
Chart sales.csv for a post: which regions grew fastest. Check the data and show which checks could not be run.Limitations
Checks depend on the agent tools: when one cannot run the plugin says so rather than staying silent. Scripts need Python 3.12 or newer. Matplotlib is checked directly while other libraries go through SVG, which is a less exact analysis. A separate reviewer is used only when the environment allows, otherwise self-review remains, which is weaker. The plugin does not replace editorial judgment about which takeaway is honest for the data: a human owns that choice.
How to disable. In Claude Code run `/plugin uninstall evident-charts@evident-charts`. In other agents remove the skill from the skills directory.
FAQ
How do I install it in Claude Code?
Run `/plugin marketplace add rhiever/evident-charts`, then `/plugin install evident-charts@evident-charts`.
Which agents are supported?
Claude Code, Codex, Cursor, Copilot, Gemini CLI, Antigravity and other agents with skills.
What is checked in the data?
Totals mixed with parts, duplicate rows and placeholder values.
Can a finished chart be submitted for critique?
Yes: attach the picture, the script or both and the skill returns ranked fixes.
How many image review rounds are there?
Up to three: by a separate reviewer when allowed, otherwise by the agent's self-review.
Discussion
No questions or reviews yet.
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README in short
The README covers example prompts, what the plugin does, typical flaws in agent charts, installation for Claude Code, Copilot, Cursor, Codex and Gemini CLI and requirements.