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 holon-run/holon --skill pptxgit clone --depth 1 https://github.com/holon-run/holonWrote 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/holon-run/holon/pptx)<a href="https://agentmods.dev/skills/holon-run/holon/pptx"><img src="https://agentmods.dev/badge/skills/holon-run/holon/pptx/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/holon-run/holon/pptx"><img src="https://agentmods.dev/badge/skills/holon-run/holon/pptx.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 | $0.00030 | $0.00826 |
| Opus 5.5 | $0.00012 | $0.00330 |
| Sonnet 5.5 | $0.00006 | $0.00165 |
| Haiku 4.5 | $0.00003 | $0.00083 |
Grade A, and why
pptx 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 — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PPTX
Summary
Use this skill for .pptx presentation work. Prefer PptxGenJS for new,
layout-driven decks and python-pptx for inspection or bounded edits. Use an
available local LibreOffice or compatible renderer for visual validation.
This is a workflow and safety contract, not a presentation engine. Probe the actual environment before choosing a backend.
When To Use
- Creating a presentation from an outline, document, data set, or template
- Inspecting slide text, structure, notes, images, charts, or metadata
- Making bounded changes to an existing deck
- Rendering a deck to PDF or images for review
- Producing charts or tables from operator-provided data
Safety Boundaries
- Keep the input unchanged and write a new
.pptxby default. - Treat hyperlinks, media, macros, embedded objects, and package metadata as untrusted input.
- Never execute VBA, embedded programs, OLE actions, or linked content.
- Ask before downloading linked assets or uploading deck content.
- Do not claim lossless editing when a deck contains animations, SmartArt, embedded media, custom XML, unsupported charts, signatures, or unknown parts.
For an existing deck, inventory those features before saving it. If the chosen library cannot preserve important features, use read-only analysis, rebuild a new deck, or request manual Office editing instead.
Backend Selection
- Prefer PptxGenJS for new presentations requiring explicit placement, reusable layouts, shapes, images, tables, or charts.
- Prefer python-pptx for reading common slide content and small edits whose affected elements are represented by its object model.
- Use LibreOffice headless only when installed and approved as a local renderer or converter. Record that it is not Microsoft PowerPoint.
- Use local image tooling for montage or pixel inspection when available.
Do not silently install Node, Python packages, LibreOffice, fonts, or other system dependencies. Report the missing capability and the safe fallback.
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 · 86 lines · 30 tokens per session scan A 38a4a1cde874
pptx is a skill published in the GitHub repository holon-run/holon (166 stars, last pushed yesterday), licensed Apache-2.0. It adds 30 tokens to every session and 826 once invoked, about $0.0001 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 2026-09-07.
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