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 Mathews-Tom/armory --skill marp-slidesgit clone --depth 1 https://github.com/Mathews-Tom/armoryWrote 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/mathews-tom/armory/marp-slides)<a href="https://agentmods.dev/skills/mathews-tom/armory/marp-slides"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/marp-slides/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/mathews-tom/armory/marp-slides"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/marp-slides.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Prompt Injection · line 61 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
- high Anti-Refusal · line 87 Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
- medium MCP Rug Pull · line 80 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00081 | $0.01462 |
| Opus 5.5 | $0.00032 | $0.00585 |
| Sonnet 5.5 | $0.00016 | $0.00292 |
| Haiku 4.5 | $0.00008 | $0.00146 |
Grade A, and why
marp-slides 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 16d 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 — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MARP Slides Skill
Author slide decks as plain Markdown using the MARP ecosystem (Marpit + Marp Core + marp-cli) and export to PDF, PowerPoint, or self-contained HTML. Decks are single .md files, git-friendly, and themable with plain CSS.
When This Skill Triggers
- User asks for a MARP deck by name
- User wants "markdown slides" or "slides from markdown"
- User wants a
.mdfile they can commit to git and regenerate deterministically - User mentions
marp-cli, Marpit directives, or asks to theme slides with CSS - User wants CLI-exportable PDF or PPTX sourced from a text document
When NOT to Use This Skill
| User wants | Use instead |
|---|---|
| Reveal.js / browser-native HTML presentation with scroll nav | html-presentation |
Edit a binary .pptx with native PowerPoint features (animations, transitions set in PowerPoint) |
document-skills:pptx |
| Static poster or single-page visual | concept-to-image |
| Animated Manim explainer video | animate |
Step 0: Gather Requirements
Before generating anything, confirm in a single message. Use defaults silently for anything the user declines to specify — never ask twice.
| Parameter | Options | Default |
|---|---|---|
| Export target | pdf, pptx, html, all |
pdf |
| Theme | dark-dashboard, light-editorial, or MARP built-in (default, gaia, uncover) |
dark-dashboard |
| Aspect ratio | 16:9, 4:3 |
16:9 |
| Slide count | integer or auto |
auto |
| Visual density | minimal (text-first), standard (mixed), dashboard (charts + metric cards) |
standard |
| Branding | logo path, accent color hex | none |
Step 1: Load References On-Demand
Do NOT read all reference files up front. Based on user intent, load only what is needed. This keeps the skill within armory's token-efficiency budget.
| User intent | Load |
|---|---|
| Any deck (always required) | references/DIRECTIVES.md — Marpit directives, frontmatter schema, image syntax |
| Custom theme or CSS styling | references/THEMES.md — dark-dashboard and light-editorial starter CSS |
| Charts, dashboards, metric cards, SVG visuals | references/COMPONENTS.md — SVG chart recipes, cards, status tags, icons |
| Export to PDF/PPTX/HTML or image | references/EXPORT.md — marp-cli flags, Chrome dependency, --html flag |
| User wants a concrete example to match | references/examples/ — 3 curated decks: dashboard.md, editorial.md, technical.md |
What ships with it
9 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.
- 16d ago Changed c2deeba6e576
- 1mo ago First seen · 94 lines · 81 tokens per session scan A 736cd852217e
marp-slides is a skill published in the GitHub repository Mathews-Tom/armory (337 stars, last pushed yesterday), licensed MIT. It adds 81 tokens to every session and 1,462 once invoked, about $0.0003 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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