deckify

A skill for creating self-contained HTML presentation decks and downloadable guides. It structures content for talks, workshops, lectures, webinars, demos, and long-form explanatory presentations.

In plain words
What is it for?
Use it to plan and produce talk, workshop, essay, or demo decks, including speaker notes, run-of-show details, lab activities, and companion guides.
Why use it?
It turns dense source material into a presentation with supporting notes, timing, exercises, or a printable guide when needed.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/zakelfassi/htmlify/deckify
Any agent
npx skills add zakelfassi/htmlify --skill deckify
Clone the repo
git clone --depth 1 https://github.com/zakelfassi/htmlify

Made for: Claude Code, Codex.

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,364 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00080 $0.02364
Opus 5 $0.00040 $0.01182
Sonnet 5 $0.00016 $0.00473
Haiku 4.5 $0.00008 $0.00236

Measured yesterday against content hash e3101a9765fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deckify 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 yesterday.

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.

skills/deckify/SKILL.md · 193 lines

How it starts

The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.

deckify

Deckify turns dense context into a browser-ready HTML deck plus a downloadable guide. It is an off-the-shelf content-creator skill: the output should be usable for a YouTube talk, live workshop, recorded lecture, webinar, internal enablement session, or publishable companion PDF.

Deckify generates HTML by default. It extends its sibling skill htmlify with:

  • deck-first narrative structure
  • speaker notes and detachable notes
  • run-of-show and chapter timing
  • demo/lab panels
  • downloadable guide/PDF mode
  • 40-60% visual coverage planning
  • image-generation illustration slots
  • browser screenshot capture when useful for visual references
  • validation for presentation and print/download use

Operating Rules

  1. Gather evidence first. Read the supplied source, repo files, docs, screenshots, existing deck/page, or prior artifact before designing the deck.
  2. Choose the smallest deck mode that fits:
    • talk-deck: YouTube/live presentation with speaker notes and run-of-show.
    • workshop-deck: talk plus exercises, labs, checkpoints, and handouts.
    • essay-deck: presentation plus downloadable long-form guide.
    • demo-deck: presentation centered around live demos and fallback screenshots.
    • launch-deck: product narrative, proof, risks, roadmap, and CTA.
    • teaching-guide: PDF-first guide with optional slide mode.
  3. Keep the output self-contained unless the user explicitly wants external assets. Inline CSS and JS. If generated images or screenshots are used, save them into the project and reference them locally.
  4. Make the first viewport presentation-ready: title, promise, audience, timing, and navigation controls.
  5. Add speaker notes for every substantive slide. Include detachable notes when the deck is for live presentation.
  6. Include a run-of-show with timestamps and chapter labels for YouTube.
  7. Include a guide/PDF mode when the user asks for a download, companion essay, handout, or post-watch material.
  8. Aim for 40-60% visual coverage for content decks unless the user asks for a text-only brief. Count full-slide visuals, companion graphics, screenshots, diagrams, demos, charts, and worksheet panels.
  9. Use visuals to clarify systems, flows, tradeoffs, proof, or examples. Do not add decorative stock-like images.
  10. When an image, screenshot, or figure references a link, article, documentation page, post, paper, or source screenshot, put the source in the visible caption/ref near the image (e.g. Source: <a href="...">Exact source title</a>). Do not leave source URLs only in a hidden manifest.
  11. Validate before final response: standalone HTML, keyboard navigation, notes, guide/print mode, media references, visual coverage, and no obvious layout overlap.

Read the full file on GitHub · 193 lines

Files

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.

Changes

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.

  1. yesterday First seen · 193 lines · 80 tokens per session scan A e3101a9765fd

Subscribe to this mod's changes

deckify is a skill published in the GitHub repository zakelfassi/htmlify (17 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 80 tokens to every session and 2,364 once invoked, about $0.0004 per session on Opus 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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