Guide · Agent skill
How to use the Book Serif Index agent skill (install and prompts)
Updated · written with AI from the project's own documentation and checked against our catalogue data
The Book Serif Index skill (skill name book-serif-index) is a set of written design guidelines that tells an AI agent how to build web interfaces that look like an archival book reader or manuscript viewer. It sets a dark outer frame around a warm, paper-toned reading surface with serif body text, monospace index navigation, and editorial details such as drop caps, margin notes and folio markers. This guide explains what the skill changes, how to install it, how to ask for it, and where it fits and where it does not.
Book Serif Index DesignMengTo/Skills · MIT Download the skill Quick start
- 1Download the ZIP. Get the book-serif-index ZIP from the MengTo/Skills page for agent-skills/web-design/book-serif-index.
- 2Unzip into a skills folder. Place the book-serif-index folder in ~/.claude/skills/ for all projects, or in .claude/skills/ in one project.
- 3Or upload in the Claude apps. Open Settings, go to Capabilities, then Skills, and upload the skill.
- 4Make a request that names the look. Describe an archival, manuscript or literary interface and mention the content sections you need.
- 5Review the output. Check text contrast, the accent colour use and whether the index navigation matches your content.
What the skill makes the agent do
Once installed, the agent follows a detailed visual direction when you ask it to build an editorial, literary, research, lore or story-driven interface. The skill describes a two-zone layout: a darker outer shell and a lighter book-like content surface centred inside it.
Typography leads the design. Headings use a display serif or gothic-inspired style, body copy is a readable serif with generous line height, and monospace labels handle navigation, metadata and indexing. The palette stays restrained, with muted ink tones and one selective accent such as oxblood, bronze or antique gold if your brand has no accent of its own.
The skill is guidance only. It does not install tools, run scripts or change anything on your machine by itself. The agent uses it as a design brief for the code it writes.
Install the skill from the ZIP or the Claude apps
Download the ZIP for agent-skills/web-design/book-serif-index from the MengTo/Skills page. Unzip it so the book-serif-index folder sits in one of these locations: ~/.claude/skills/ for all your projects, or .claude/skills/ inside a single project folder for that project only.
If you use the Claude apps instead, open Settings, go to Capabilities, and upload the skill under Skills. Check that SKILL.md is inside the skill folder after unzipping.
- Personal install: ~/.claude/skills/book-serif-index/
- Project install: .claude/skills/book-serif-index/ inside your project
- Claude apps: Settings → Capabilities → Skills, then upload
Trigger the skill with a natural request
You do not need a special command. Describe the kind of interface you want and mention the look, for example an archive, manuscript viewer or literary catalog. The skill is designed for interfaces that should feel like a curated archival reader.
The package includes demo prompts that name the skill with a $ prefix, such as Use $book-serif-index to create a responsive standalone HTML design. Using that wording makes it explicit which skill you want.
- Use $book-serif-index to build a responsive standalone HTML landing page for an archive of 19th-century letters.
- Use $book-serif-index to design a research index page with a mono sidebar of chapters and folio footers.
- Use $book-serif-index to make a lore wiki home page with a dark shell, paper reading panel and margin notes.
Use $book-serif-index to create a responsive standalone HTML design with serif-led pages and mono index navigation.Get the best results from a prompt
The skill covers both the look and the structure, so give the agent content to place in it. Name the sections, chapters or archive groups you need, and say whether the page should feel airy and museum-like or denser and more scholarly.
The demo folder includes a product brief pattern: a page concept, a purpose, and a short list of content anchors. Copy that structure for your own project. The included demo/index.html is referenced as the visual and interaction reference, so you can point the agent at a reference file in your project in the same way.
- State the page concept and purpose in one or two sentences.
- List the content anchors: headings, chapter names and labels.
- Set the density: airy museum-like or denser scholarly indexing.
- Choose how historical the interface should feel, and how strong the accent colour should be.
Safety and requirements
The skill lists no requirements. It does not run scripts and does not use the network, so installing it does not add software or make outgoing connections. Review the SKILL.md file as you would any text you give an agent.
The skill also has limits. The paper textures and muted tones can reduce legibility if overdone, so check contrast yourself. The skill itself warns against excessive distressed effects and against overly ornate fantasy styling.
- Requires: nothing listed
- Runs scripts: no
- Uses network: no
- Check contrast and readability before publishing
Tips for better output
Use the tuning knobs the skill describes. Antiquity controls how much paper texture, warm tint and wear appear. Technical overlay controls how many catalog rails and index labels appear. Book realism controls crease depth and page shadows.
Keep accent colour concentrated in headings, active index states, callouts and notes rather than across the whole spread. Ask the agent to check the result for readable text and for a palette that stays restrained.
- Lower the paper texture first if text looks hard to read.
- Ask for index rails and folio markers only where the content needs navigation.
- Iterate on one knob at a time so you can see what changed.
What people use it for
- A literary press homepage with a dark shell, paper reading panel and drop-cap opening paragraph.
- A research archive with a mono sidebar of chapters, section trees and citation footers.
- A story-driven product page for a game or fiction project with lore entries arranged as an index.
- A museum-style exhibit page with image plates in thin framed borders and captions.
Frequently asked questions
Is the book-serif-index skill free?
The skill is published under the MIT licence, as listed on the item page. Check the licence file in the download for the full terms before you reuse it in a commercial project.
What do I need to install book-serif-index?
The skill lists no requirements, and it does not run scripts or use the network. You unzip the folder into ~/.claude/skills/ or a project's .claude/skills/, or upload it under Settings, Capabilities, Skills in the Claude apps.
How do I trigger the book-serif-index skill?
Describe an archival, manuscript or literary interface in your request, or name the skill directly with $book-serif-index as shown in the demo prompts. The skill then applies its visual direction to the code the agent writes.
Does the skill install anything or change my files?
No. The skill is a set of written design guidelines. It does not install tools or change anything on its own, and it runs no scripts.
When should I pick a different skill or design direction?
Choose another direction for bright, modern SaaS or e-commerce interfaces, since this skill steers away from that palette and feel. Also review the output carefully if you need strict accessibility or high-contrast reading, because the paper textures and muted tones may reduce legibility.
What is in the demo folder?
The demo folder contains PROMPT.md and source.json. PROMPT.md holds example prompts that use $book-serif-index, including a recreation prompt that treats demo/index.html as the reference.
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Our verdict
Use this skill if you are building editorial, literary, archive or lore-driven sites and want a clear, consistent archival design direction for an agent to follow. Pick something else for bright SaaS or e-commerce interfaces, or for projects that need high-contrast, strictly accessible reading without a separate review.
Download the skill