chart-image

chart-image is a skill for Codex from Rylaispirit/rylai-codex-hermes-skills. It costs 27 tokens per session (419 once invoked), scanned A, original, MIT.

A workflow for turning supplied data into publication-quality chart images. It chooses a suitable chart type and requires clear scales, labels, units, legends, sources, and uncertainty information where relevant.

In plain words
What is it for?
Use it to create charts from data with time fields, categories, units, missing values, or uncertainty. It supports common plotting libraries and can produce portable SVG output when the project uses that workflow.
Why use it?
It helps prevent charts that are misleading, unexplained, or difficult to read. It also includes checking the rendered image so visual problems are caught before delivery.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: reads .claude/ paths; mentions Claude Code; mentions Codex.

Good fit Use it to create charts from data with time fields, categories, units, missing values, or uncertainty. It supports common plotting libraries and can produce portable SVG output when the project uses that workflow.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rylaispirit/rylai-codex-hermes-skills/chart-image
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.

Any agent
npx skills add Rylaispirit/rylai-codex-hermes-skills --skill chart-image
Clone the repo
git clone --depth 1 https://github.com/Rylaispirit/rylai-codex-hermes-skills

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for chart-image

README.md
[![agentmods](https://agentmods.dev/badge/skills/rylaispirit/rylai-codex-hermes-skills/chart-image/github.svg)](https://agentmods.dev/skills/rylaispirit/rylai-codex-hermes-skills/chart-image)
Your own site
<a href="https://agentmods.dev/skills/rylaispirit/rylai-codex-hermes-skills/chart-image"><img src="https://agentmods.dev/badge/skills/rylaispirit/rylai-codex-hermes-skills/chart-image/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for chart-image

Your own site · 80×15
<a href="https://agentmods.dev/skills/rylaispirit/rylai-codex-hermes-skills/chart-image"><img src="https://agentmods.dev/badge/skills/rylaispirit/rylai-codex-hermes-skills/chart-image.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 419 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00027 $0.00419
Opus 5 $0.00014 $0.00210
Sonnet 5 $0.00005 $0.00084
Haiku 4.5 $0.00003 $0.00042

Measured 10d ago against content hash 37a2efcc411c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

chart-image 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 10d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/chart.mjs), 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.

skills/chart-image/SKILL.md · 45 lines

What it actually says

Rylai Codex-Hermes-Claude Edition | Original portable workflow by Rylai

Runtime Compatibility

  • Codex: install under ~/.agents/skills/chart-image.
  • Hermes: install under ~/.hermes/skills/chart-image or expose the bundle through skills.external_dirs.
  • Claude Code: install under ~/.claude/skills/chart-image or <project>/.claude/skills/chart-image.
  • Claude.ai and Cowork: upload and enable the matching per-skill ZIP.
  • Resolve bundled files relative to this skill directory; do not depend on paths from another machine.
  • Check tools, packages, credentials, network access, and runtime capabilities before execution.

Portable Chart Image

Generate a chart image from the actual supplied data.

Workflow

  1. Inspect the schema, units, missing values, categories, and time fields.
  2. Choose a chart type that matches the analytical question.
  3. Use an available library such as Matplotlib, Seaborn, Plotly, Vega-Lite, or the repository's existing chart stack.
  4. Label axes, units, legends, source, and uncertainty where relevant.
  5. Prefer node scripts/chart.mjs for portable SVG output, or use the repository's installed plotting stack.
  6. Inspect the rendered image for clipping, unreadable labels, misleading scales, and color contrast.

Integrity

  • Do not infer values that are absent from the data.
  • Start quantitative axes at an appropriate baseline and disclose truncation.
  • Preserve a reproducible script or notebook with the output.
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 10d ago First seen · 45 lines · 27 tokens per session scan A 37a2efcc411c

Subscribe to this mod's changes

chart-image is a skill published in the GitHub repository Rylaispirit/rylai-codex-hermes-skills (55 stars, last pushed 27d ago), licensed MIT. It adds 27 tokens to every session and 419 once invoked, about $0.0001 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 2026-08-30.

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