chart-visualization

A tool for turning data into visual charts and diagrams, with 26 chart types such as line, bar, pie, map, and network charts.

In plain words
What is it for?
Use it to create plots, diagrams, and other visual summaries from data you provide.
Why use it?
It helps choose a suitable way to show the data instead of making you design the chart yourself.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/comisai/comis/chart-visualization
Any agent
npx skills add comisai/comis --skill chart-visualization
Clone the repo
git clone --depth 1 https://github.com/comisai/comis

Made for: Claude Code, Codex.

Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 912 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00098 $0.00912
Opus 5 $0.00049 $0.00456
Sonnet 5 $0.00020 $0.00182
Haiku 4.5 $0.00010 $0.00091

Measured yesterday against content hash 876a2b5976b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

chart-visualization scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/generate.cjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/daemon/bundled-skills/chart-visualization/SKILL.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Chart Visualization

Generate charts and data visualizations from user data. Selects the best chart type from 26 options, extracts parameters from detailed specs, and generates a chart image via a bundled Node.js script.

All script paths below are relative to this skill's directory. Resolve them against the directory containing the manifest file shown in <location> (e.g., if <location> is ~/.comis/skills/chart-visualization/SKILL.md, then scripts/generate.js means ~/.comis/skills/chart-visualization/scripts/generate.js). Invoke the resolved script by its absolute path while keeping the tool working directory inside the execution workspace. Never set cwd to the skill directory; it is outside workspace bounds. In command examples below, replace each relative scripts/... path with its resolved absolute path.

Workflow

1. Select chart type

Analyze the user's data to determine the best chart type:

  • Time series: generate_line_chart (trends), generate_area_chart (accumulated), generate_dual_axes_chart (two scales)
  • Comparisons: generate_bar_chart (categorical), generate_column_chart, generate_histogram_chart (frequency)
  • Part-to-whole: generate_pie_chart, generate_treemap_chart (hierarchical)
  • Relationships & flow: generate_scatter_chart (correlation), generate_sankey_chart (flow), generate_venn_chart (overlap)
  • Maps: generate_district_map (regions), generate_pin_map (points), generate_path_map (routes)
  • Hierarchies: generate_organization_chart, generate_mind_map
  • Specialized: generate_radar_chart (multi-dimensional), generate_funnel_chart (stages), generate_liquid_chart (percentage), generate_word_cloud_chart (text frequency), generate_boxplot_chart / generate_violin_chart (distribution), generate_network_graph (node-edge), generate_fishbone_diagram (cause-effect), generate_flow_diagram (process), generate_spreadsheet (tabular/pivot)

2. Extract parameters

Read the full file on GitHub · 71 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 71 lines · 98 tokens per session scan A 876a2b5976b3

Subscribe to this mod's changes

chart-visualization is a skill published in the GitHub repository comisai/comis (5 stars, last pushed 2d ago), licensed Apache-2.0. It adds 98 tokens to every session and 912 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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