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 liormesh/trestle --skill visualizegit clone --depth 1 https://github.com/liormesh/trestleWrote 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/liormesh/trestle/visualize)<a href="https://agentmods.dev/skills/liormesh/trestle/visualize"><img src="https://agentmods.dev/badge/skills/liormesh/trestle/visualize/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/liormesh/trestle/visualize"><img src="https://agentmods.dev/badge/skills/liormesh/trestle/visualize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00167 | $0.00875 |
| Opus 5.5 | $0.00067 | $0.00350 |
| Sonnet 5.5 | $0.00033 | $0.00175 |
| Haiku 4.5 | $0.00017 | $0.00088 |
Grade A, and why
visualize 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 1mo 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 — 40 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/visualize - build a visual artifact (HTML or PDF)
Produce ONE self-contained file the user can open by double-clicking - no server, no internet, no build step. HTML by default; PDF when the deliverable has to be a PDF. This is an on-demand skill: run it when asked, don't auto-convert things the user didn't ask to see visually.
First action - load context
Read the visualization book's table of contents, then pull only the chapters this request needs:
- Book:
books/dataviz/_toc.mdin the knowledge base (the canonical, writable copy). If it isn't there, fall back tobook/dataviz/_toc.mdbeside this skill (the copy shipped with the installer). - Always load
ch02-self-contained-html.md- the core craft; every artifact is one self-contained file. - Load
ch03-charts-and-data.mdif the request involves numbers, metrics, or charts. - Load
ch04-pdf-output.mdif the output must be a PDF. - Skim
ch01-when-and-format.mdif it's unclear whether to build at all, or which format fits. - Check
ch05-gotchas.mdbefore shipping.
Read the book and apply it - don't reproduce it here.
Flow
- Decide what, and whether. Per ch01: is a visual actually the right call, or is markdown fine? If yes, pick the artifact type - plan/spec, report, data dashboard, or explainer - and the format (HTML unless the user asked for PDF).
- Build one self-contained file per ch02: inline all CSS and JS, embed images/fonts as
data:URIs, no external requests, responsive, readable in both light and dark, print-friendly. For data, apply ch03 (right chart, accessible color, labels/legend, tables that scroll). - Save it somewhere sensible and open it. Default: a
visualizations/folder in the current project (create it), or the path the user names. Use a clear filename ({topic}-{kind}.html). Then open it so the user sees it right away. - PDF, if asked: build the HTML first (steps 2-3), then produce the PDF per ch04. Default is print-to-PDF from the browser (zero dependency); use an automated tool only if one is already installed, and say which.
- Iterate: if the user marks up or asks for changes, keep editing the same file.
What ships with it
6 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.
- 1mo ago First seen · 40 lines · 0 tokens per session scan A 5ad0428422ca
visualize is a skill published in the GitHub repository liormesh/trestle (2 stars, last pushed 2mo ago), licensed MIT. It adds 167 tokens to every session and 875 once invoked, about $0.0007 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 2026-08-31.
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