Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/event4u-app/agent-confignpx agentmods add skills/event4u-app/agent-config/html-deckWrote 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/event4u-app/agent-config/html-deck)<a href="https://agentmods.dev/skills/event4u-app/agent-config/html-deck"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/html-deck/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/event4u-app/agent-config/html-deck"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/html-deck.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 | $0.00046 | $0.01897 |
| Opus 5 | $0.00023 | $0.00949 |
| Sonnet 5 | $0.00009 | $0.00379 |
| Haiku 4.5 | $0.00005 | $0.00190 |
Grade A, and why
html-deck 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 9d 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HTML Deck
Build a slide presentation as a single HTML file with fixed-size slides that letterbox to any viewport. A deck is fixed-canvas media (default 1920×1080, 16:9) — a different medium from responsive UI and from static posters.
When to use
Cross-surface handoff. A deck often consumes upstream analysis (spreadsheet → deck, research → deck). Read the handoff envelope from
surface-agent-contracts: trustverification_already_done(don't recompute the source's numbers), carry the asset list, and keep source restrictions intact.
- The user asks for a deck, presentation, slides, or a pitch as a web/HTML deliverable.
When NOT to use: static single-image visual art (poster, PNG/PDF
one-off) → canvas-design. Responsive product
UI → fe-design + stack executor. Multiple styled
options of one screen → design-variations.
Deck fidelity floor
The deck surface's floor (per
surface-agent-contracts):
- Outline before slides. Draft the slide outline (title + one-line intent
per slide) before building any slide; when audience or tone is ambiguous, ask
once. (fixture:
ssac-deck-missing-notes.) - Labels + speaker notes. Every slide carries a stable label and speaker notes, not just on-slide text.
- Visual rhythm + readable scale. Consistent spacing/hierarchy across
slides; never sub-readable text (the type floors below). (fixture:
ssac-tiny-slide-text.) - Image/asset provenance. Real assets via the project path, no invented
brand evidence (
design-fidelity§ Asset & imagery discipline). - Export verification. Verify the deck exports/renders
(
design-artifact-verification); on a host without export capability, say what could not be verified rather than claiming a clean export.
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.
- 9d ago First seen · 154 lines · 46 tokens per session scan A 8f086e32e045
html-deck is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 46 tokens to every session and 1,897 once invoked, about $0.0002 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 2026-09-03.
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