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 lfurze/claude-skills --skill slide-upgradegit clone --depth 1 https://github.com/lfurze/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/lfurze/claude-skills/slide-upgrade)<a href="https://agentmods.dev/skills/lfurze/claude-skills/slide-upgrade"><img src="https://agentmods.dev/badge/skills/lfurze/claude-skills/slide-upgrade/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/lfurze/claude-skills/slide-upgrade"><img src="https://agentmods.dev/badge/skills/lfurze/claude-skills/slide-upgrade.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 | $0.00130 | $0.02078 |
| Opus 5 | $0.00065 | $0.01039 |
| Sonnet 5 | $0.00026 | $0.00416 |
| Haiku 4.5 | $0.00013 | $0.00208 |
Grade C, and why
slide-upgrade scanned grade C with 1 finding 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 10d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf /tmp/pptx-unpacked && mkdir -p /tmp/pptx-unpacked How it starts
The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slide Upgrade
Convert any input — PPTX, Markdown, or a plain prompt — into a visually stunning, Canva-quality HTML slide deck. Images are base64-encoded into the HTML; videos (too large for inline embedding) are copied to a media/ folder alongside the HTML with relative path references. The output looks like it was designed in Canva or Figma, not PowerPoint.
Design Philosophy
The output should feel like a contemporary creative portfolio or Canva template, not a corporate PowerPoint. Key principles:
- Massive, bold typography — headings should dominate the slide (100-200px, condensed, uppercase)
- Full-colour backgrounds — bold yellow, deep blue, rich black, vibrant red — not just white
- Confident whitespace — don't fill every pixel; let elements breathe
- Photo-forward layouts — images bleed to edges, use geometric crops (circles, arches, diagonals)
- Visual hierarchy through scale — the difference between heading and body should be dramatic (5-10x)
- Slide numbering — prominent slide numbers (01, 02, 03) add editorial structure
- Horizontal rules — use lines to separate and structure content, not boxes
- Type as hero — on many slides, the typography IS the design; no images needed
Inputs
PPTX File
- Unzip the PPTX and parse the raw XML (see
references/pptx-extractor.md) — do not use python-pptx, it misses videos, shape-fill images, and SVGs - Read each slide XML to extract text, images, videos, tables, and backgrounds
- Redesign from scratch — don't try to replicate the PPTX layout; reimagine it with Canva-quality design
- Base64-encode images for self-contained HTML; copy videos to a
media/folder alongside the HTML with relative path references
Markdown File
- Read the
.mdfile - Split on
---horizontal rules for slide breaks (if present) - If no explicit breaks, use heading hierarchy:
# H1= section dividers,## H2= individual slides - Parse content per slide, then design
What ships with it
2 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.
- 10d ago First seen · 156 lines · 130 tokens per session scan C 94a4b97dd143
slide-upgrade is a skill published in the GitHub repository lfurze/claude-skills (23 stars, last pushed 6mo ago), licensed MIT. It adds 130 tokens to every session and 2,078 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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