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 glebis/claude-skills --skill tufte-reportgit clone --depth 1 https://github.com/glebis/claude-skillsWrote 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/glebis/claude-skills/tufte-report)<a href="https://agentmods.dev/skills/glebis/claude-skills/tufte-report"><img src="https://agentmods.dev/badge/skills/glebis/claude-skills/tufte-report/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/glebis/claude-skills/tufte-report"><img src="https://agentmods.dev/badge/skills/glebis/claude-skills/tufte-report.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 | $0.00149 | $0.02283 |
| Opus 5.5 | $0.00060 | $0.00913 |
| Sonnet 5.5 | $0.00030 | $0.00457 |
| Haiku 4.5 | $0.00015 | $0.00228 |
Grade A, and why
tufte-report 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 — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tufte Report — Data-Driven Infographic Skill
Create standalone HTML reports that combine editorial narrative with interactive data visualization in Edward Tufte's style: high information density, minimal chart junk, typography-first design.
Design Philosophy
Tufte's core principles drive every decision:
- Data-ink ratio: every pixel of ink should represent data, not decoration
- Small multiples: repeat a design to show comparison, not animation
- Sparklines: word-sized graphics that live inside prose
- Layering: overview first, then detail on demand
- Integration: text and graphics share the same visual space (sidenotes, not footnotes)
The report should feel like a well-edited magazine feature — you read it top to bottom, narrative carries you through the data, and every chart earns its space by answering a specific question.
Onboarding — Ask Before Building
Before writing ANY code, ask these questions. Do not proceed until all are answered:
- What data sources do you have? (CSV, JSON, SQLite, API endpoint, or raw numbers)
- What is the primary question this report should answer? (one sentence — this becomes the title and drives all design decisions)
- How many sections do you need? (cap at 8 — push back if more are requested; each section should answer one sub-question)
- What's the output format? (standalone HTML file, or embedded component)
- Time budget? Provide an estimate:
- 1-2 sections with tables only: ~200 LOC, ~5 min bypass / ~10 min manual
- 3-4 sections with 2-3 charts: ~500 LOC, ~15 min bypass / ~25 min manual
- 5-8 sections with charts + health data + sparklines: ~1200 LOC, ~30 min bypass / ~50 min manual
Scope Protection
This skill enforces hard limits to prevent scope creep:
- Max 8 sections — if the user asks for more, suggest combining related topics
- Max 2 chart types per section — a section gets one primary chart and optionally one supporting chart or table. More than that means the section should split
- Max 3 colors per chart — beyond that, use small multiples instead of rainbow legends
- No 3D charts, no pie charts, no donut charts — these violate Tufte principles
- No gratuitous animation — scroll-reveal on enter is fine; spinning, bouncing, or pulsing is not
- Every chart must have a caption — if you can't write a one-sentence caption explaining what the chart shows, the chart shouldn't exist
What ships with it
8 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 · 174 lines · 149 tokens per session scan A 0a8c3d88991b
tufte-report is a skill published in the GitHub repository glebis/claude-skills (407 stars, last pushed 2d ago), licensed MIT. It adds 149 tokens to every session and 2,283 once invoked, about $0.0006 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 2026-09-03.
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