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.
npx skills add TasiTech/tasi-harness --skill chart-generatorgit clone --depth 1 https://github.com/TasiTech/tasi-harnessWrote 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.
[](https://agentmods.dev/skills/tasitech/tasi-harness/chart-generator)<a href="https://agentmods.dev/skills/tasitech/tasi-harness/chart-generator"><img src="https://agentmods.dev/badge/skills/tasitech/tasi-harness/chart-generator/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.
<a href="https://agentmods.dev/skills/tasitech/tasi-harness/chart-generator"><img src="https://agentmods.dev/badge/skills/tasitech/tasi-harness/chart-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00061 | $0.00590 |
| Opus 5.5 | $0.00024 | $0.00236 |
| Sonnet 5.5 | $0.00012 | $0.00118 |
| Haiku 4.5 | $0.00006 | $0.00059 |
Grade A, and why
chart-generator 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 2mo ago.
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.
How it starts
The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Chart Generator
Scope
Use this skill to turn tabular data into chart assets and chart specifications. It is domain-neutral: do not assume Walmart, sales, unemployment, or any other business-specific fields unless the user provides them.
This skill provides a bundled zero-dependency Node.js script for SVG chart generation. SVG is the default source asset because it preserves text and vector quality. If the final document requires PNG, generate SVG first and then use a downstream renderer, office export workflow, or file-format skill to convert or embed as needed.
Workflow
- Inspect the data request: Identify the dataset path, chart purpose, audience, required chart type, and output location.
- Validate fields: Confirm the referenced CSV columns exist and contain usable numeric/date/category values. State assumptions if column names are inferred.
- Choose a chart:
- Line chart for trends over time or ordered values.
- Bar chart for category comparison or ranking.
- Scatter plot for relationships between two numeric fields.
- Correlation heatmap for relationships among multiple numeric fields.
- Create a chart spec: Follow chart-spec.md. Keep the spec explicit about columns, aggregation, sorting, labels, size, and export path.
- Run the script: Use
scripts/generate_chart.mjswith--input,--spec, and--output. - Return assets and interpretation: Report the generated SVG path, intended insertion format, and 1-3 findings the chart supports.
Script Usage
node scripts/generate_chart.mjs --input data.csv --spec chart-spec.json --output output/chart.svg
The script supports:
barlinescatterheatmap
The script writes an SVG file and a sidecar manifest JSON at <output>.manifest.json.
Output Guidance
For Word/PDF/PPTX insertion:
- Prefer SVG for PPTX and modern Word when vector support is acceptable.
- Prefer PNG when maximum compatibility is required; convert the generated SVG using an available downstream renderer.
- Keep charts readable at final document size: short titles, clear axis labels, limited legends, and no crowded category labels.
What ships with it
3 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.
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.
- 2mo ago First seen · 58 lines · 61 tokens per session scan A 2e1e4d340bc3
chart-generator is a skill published in the GitHub repository TasiTech/tasi-harness (11 stars, last pushed 1mo ago), licensed MIT. It adds 61 tokens to every session and 590 once invoked, about $0.0002 per session on Opus 5.5. 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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