Oh My PPT is a local-first desktop application that uses AI to create, edit, present, and export editable HTML-based slide presentations. It is for people making presentations, lessons, stories, reports, or pitches who want to describe their content and then adjust the resulting pages, visuals, animations, and layouts.
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 arcsin1/oh-my-ppt --skill standard-4-3-layout-skillgit clone --depth 1 https://github.com/arcsin1/oh-my-pptWrote 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/arcsin1/oh-my-ppt/standard-4-3-layout-skill)<a href="https://agentmods.dev/skills/arcsin1/oh-my-ppt/standard-4-3-layout-skill"><img src="https://agentmods.dev/badge/skills/arcsin1/oh-my-ppt/standard-4-3-layout-skill/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/arcsin1/oh-my-ppt/standard-4-3-layout-skill"><img src="https://agentmods.dev/badge/skills/arcsin1/oh-my-ppt/standard-4-3-layout-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00068 | $0.01083 |
| Opus 5 | $0.00034 | $0.00541 |
| Sonnet 5 | $0.00014 | $0.00217 |
| Haiku 4.5 | $0.00007 | $0.00108 |
Grade A, and why
standard-4-3-layout-skill 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 6d 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 — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Standard 4:3 Layout Skill
This skill is the layout source of truth for standard-4-3 pages, usually 1600x1200.
A 4:3 page is a square-ish presentation canvas. It supports readable talk-track slides, balanced data + insight pairs, compact matrices, and diagrams with generous margins. Its best layouts use depth through hierarchy, not by spreading many columns across the width.
Deep details live in the references:
references/catalog.md- named 4:3 presentation patterns and 1600x1200 zone skeletons.references/checklist.md- P0/P1/P2 structural self-check for delivery.
Preflight
Before writing HTML, decide:
- Message - the one sentence this slide should make the audience remember.
- Primary object - chart, table, matrix, diagram, hero number, conclusion block, image, or comparison.
- Reading path - title/claim -> primary object -> interpretation/action.
- Density - low for cover/quote/hero number, medium for most slides, high only for compact tables or matrices.
- Pattern - use a structure from
references/catalog.mdas a starting point when it helps the reading path; it is not a closed template menu, and a fresh composition is welcome when it serves the page thesis. - Budget - estimate width and height together; 4:3 failures are often width pressure, not only height pressure.
Use the canvas dimensions from the prompt. If custom dimensions are supplied, preserve the same square-ish relationships.
Canvas Grammar
- Favor one-column, two-zone, 2x2, or center + rail structures.
- Two real content columns are usually enough. Three columns work only for short metric chips or labels.
- Keep side margins and gutters generous enough for projection readability.
- Use row-based tables and grouped insight rows when information has several dimensions.
- Use grid/flex document flow for text-bearing modules. Independent text/content modules occupy their own cells and must not overlap or escape the canvas. Absolute positioning is only for background accents, connector lines, non-text decoration, and intentional image/video background composition; text or transparent panels may intentionally sit over media.
- Independent content modules must retain an actual nonzero gap. Compact spacing is valid when it suits the composition.
- Body copy, ordinary labels, and card descriptions default to at least 24px (Tailwind
text-2xlortext-[24px]). Only a genuinely high-density bounded module may use 21px after restructuring; mark itdata-ppt-density="high"and compensate its grid/flex footprint if it is scaled. Headings are at least 32px (text-3xlor larger) with no upper cap; auxiliary source/footer text is at least 16px. These floors preserve the same displayed 18px / 16px / 24px / 12px semantic minimums on this 1200px-high canvas.
What ships with it
3 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.
- 6d ago Changed · +1 lines 7cba68703bf6
- 11d ago First seen · 73 lines · 68 tokens per session scan A caa30f595343
standard-4-3-layout-skill is a skill published in the GitHub repository arcsin1/oh-my-ppt (1,946 stars, last pushed 5d ago), licensed Apache-2.0. It adds 68 tokens to every session and 1,083 once invoked, about $0.0003 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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