create-theme

create-theme is a skill for Claude Code, Codex from 1weiho/open-slide. It costs 129 tokens per session (3,015 once invoked), scanned A, original, MIT.

A reusable visual style package for presentations, containing written design guidance and a runnable preview. It defines choices such as colors, type styles, layouts, fixed title or footer elements, and motion.

In plain words
What is it for?
Use it to create or extract a presentation theme and save the paired files that the slide authoring tools and theme preview can use.
Why use it?
It keeps slides in the same visual style and lets authors preview that style before using it in a presentation.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool.

Good fit Use it to create or extract a presentation theme and save the paired files that the slide authoring tools and theme preview can use.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/1weiho/open-slide/create-theme
About the project

open-slide is a React-based slide framework that lets coding agents create presentations from natural-language descriptions. It provides the canvas, scaling, navigation, hot reload, and presentation mode while agents write the slide components. The catalogue skills and instructions support agent-based slide authoring and revision.

1weiho/open-slide · 9,292 stars · on GitHub · open-slide.dev

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.

Any agent
npx skills add 1weiho/open-slide --skill create-theme
Clone the repo
git clone --depth 1 https://github.com/1weiho/open-slide

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for create-theme

README.md
[![agentmods](https://agentmods.dev/badge/skills/1weiho/open-slide/create-theme/github.svg)](https://agentmods.dev/skills/1weiho/open-slide/create-theme)
Your own site
<a href="https://agentmods.dev/skills/1weiho/open-slide/create-theme"><img src="https://agentmods.dev/badge/skills/1weiho/open-slide/create-theme/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.

agentmods 80×15 button for create-theme

Your own site · 80×15
<a href="https://agentmods.dev/skills/1weiho/open-slide/create-theme"><img src="https://agentmods.dev/badge/skills/1weiho/open-slide/create-theme.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 129 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,015 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00129 $0.03015
Opus 5.5 $0.00052 $0.01206
Sonnet 5.5 $0.00026 $0.00603
Haiku 4.5 $0.00013 $0.00301

Measured 1mo ago against content hash d1a056551f50, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

create-theme 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

packages/core/skills/create-theme/SKILL.md · 254 lines

How it starts

The opening of the file, as written. The whole thing — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create a slide theme

This skill produces a theme bundle under themes/: two paired files that together describe a reusable visual identity.

  1. themes/<id>.md — agent-facing documentation: palette, typography, layout, fixed Title/Footer/Eyebrow components, motion. This is what create-slide reads when an author picks the theme.
  2. themes/<id>.demo.tsx — a runnable mini-slide (a normal slide module: export default Page[]) that demonstrates the theme on 2–3 pages. The dev UI's Themes panel loads this file and renders it as the theme's live preview.

Both files share the same stem so the runtime can pair them automatically.

A theme is distinct from a slide's design const. The theme markdown is authoring-time aesthetic direction (copied into a real slide's source by create-slide). The demo .tsx is a self-contained preview, not a real slide — it does not appear in the slides list. A per-slide const design: DesignSystem = { … } (declared at the top of slides/<id>/index.tsx) is the runtime tokens object the user can tweak from the Design panel. The markdown commits the direction; the per-slide design const makes the slide tweakable; the demo .tsx makes the theme previewable.

You only write files under themes/<id>.md and themes/<id>.demo.tsx. Never modify real slides or other configuration. The canvas / type-scale defaults that themes can override live in the slide-authoring skill — read it before writing the theme so your overrides are stated explicitly.

Step 1 — Identify the input source

A theme can be derived from any combination of three input shapes:

  • Image references — paths or URLs to slide screenshots, mood-board images, brand assets.
  • Free-text description — prose describing the desired palette, fonts, feel.
  • An existing slide — slides/<id>/index.tsx whose visual identity should be lifted out into a reusable theme.

If the user's original message already specifies the inputs unambiguously, skip the question and proceed. Otherwise call AskUserQuestion (multi-select) so they can pick one or more sources, and ask follow-ups (paths, slide id, prose) only as needed.

Read the full file on GitHub · 254 lines

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. 1mo ago First seen · 254 lines · 129 tokens per session scan A d1a056551f50

Subscribe to this mod's changes

create-theme is a skill published in the GitHub repository 1weiho/open-slide (9,292 stars, last pushed 2d ago), licensed MIT. It adds 129 tokens to every session and 3,015 once invoked, about $0.0005 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.

Related

Other skills, from other repositories

langbot-dev

Develop, build, and debug the LangBot core backend and web frontend. Use when working inside the LangBot repository — backend (Python/Quart, src/langbot/pkg), the Vite/React web UI, HTTP API controllers/services, Alembic migrations, or the MCP server. Covers the dev environment (uv, pnpm), repo layout, the API auth…

langbot-app/LangBot · 136 tokens

web-design-engineer

Build or redesign polished browser-rendered visual artifacts with HTML/CSS/JavaScript/React: pages, dashboards, prototypes, slide decks, animations, UI mockups, and data visualizations. Use for visual front-end creation, design-system exploration, design critique, or explicit browser acceptance / QA of a web artifact.…

ConardLi/garden-skills · 96 tokens

deck-open-slide-canvas

A presentation layout system for freely arranging React components on a fixed 1920×1080 slide canvas. React is a way to build interfaces from reusable pieces.

nexu-io/html-anything · 28 tokens

deck-obsidian-claude

A visual design template for presentation slides with a dark GitHub-like background, colored lighting, gradient headings, and code-style formatting.

nexu-io/html-anything · 27 tokens

remotion-to-hyperframes

Port an existing Remotion (React) composition to HyperFrames HTML. Use ONLY when the user explicitly asks to port/convert/migrate/translate a Remotion source. Do NOT use: (a) authoring a new HyperFrames composition; (b) Remotion mentioned in passing; (c) Remotion code shared as reference only; (d) "same video as my…

calesthio/OpenMontage · 215 tokens

gsap-react

Official GSAP skill for React — useGSAP hook, refs, gsap.context(), cleanup. Use when the user wants animation in React or Next.js, or asks about GSAP with React, useGSAP, or cleanup on unmount. Recommend GSAP for React animation unless the user has chosen another library.

calesthio/OpenMontage · 68 tokens