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Create Documentation

Documents
create-documentation

Create Documentation is an Agent Skill for documents published in the LibPDF-js/core repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Generate markdown documentation for a module or feature

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QUICK START

How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy and paste the prompt below.
  3. Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/LibPDF-js/core/blob/HEAD/.opencode/skills/create-documentation/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/create-documentation, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

You are creating proper markdown documentation for a module or feature in the library.

Read WRITING_STYLE.md first for tone, formatting conventions, and anti-patterns to avoid.

Your Task

  1. Identify the scope - Based on the conversation context, determine what module, feature, or file needs documentation. Ask the user if unclear.
  2. Read the source code - Understand the public API, types, and behavior
  3. Read existing docs - Check content/docs/ for documentation to update
  4. Write comprehensive documentation - Create or update MDX docs

Documentation Structure

This project uses Fumadocs for documentation. All docs live in content/docs/ as MDX files.

content/docs/
├── index.mdx              # Landing page
├── meta.json              # Root navigation order
├── getting-started/       # Quickstart guides
│   ├── installation.mdx
│   ├── create-pdf.mdx
│   └── parse-pdf.mdx
├── guides/                # Feature guides
│   ├── drawing.mdx
│   ├── encryption.mdx
|   |-- ...
├── api/                   # API reference
│   ├── pdf.mdx
│   ├── pdf-page.mdx
│   ├── pdf-form.mdx
│   ├── ...
├── concepts/              # Conceptual docs
│   ├── pdf-structure.mdx
│   ├── object-model.mdx
│   └── incremental-saves.mdx
├── advanced/              # Advanced topics
│   └── library-authors.mdx
└── migration/             # Migration guides
    └── from-pdf-lib.mdx

Where to Put Documentation

TypeLocationWhen to use
API Referencecontent/docs/api/<class>.mdxDocumenting a class like PDF, PDFPage, PDFForm
Feature Guidecontent/docs/guides/<feature>.mdxHow-to guides for features (forms, signatures, etc.)
Conceptcontent/docs/concepts/<topic>.mdxExplaining PDF concepts (structure, objects, etc.)
Getting Startedcontent/docs/getting-started/Installation and first steps

Navigation (meta.json)

Each directory has a meta.json that controls navigation order:

{
  "title": "API Reference",
  "pages": [
    "index",
    "---Classes---",
    "pdf",
    "pdf-page",
    "pdf-form",
    "annotations",
    "---Other---",
    "errors"
  ]
}
  • Use ---Label--- for section dividers
  • Order determines sidebar appearance

MDX File Format

---
title: ModuleName
description: Brief description for SEO and previews.
---

# ModuleName

Brief description of what this module does and when to use it.

<Callout type="warn" title="my title">
  Use callouts sparingly for important warnings or beta features.
</Callout>

## Quick Start

\`\`\`typescript
import { PDF } from "@libpdf/core";
// Minimal working example
\`\`\`

---

## methodName(options)

Description of what the method does.

| Param        | Type     | Default  | Description    |
| ------------ | -------- | -------- | -------------- |
| `param`      | `string` | required | What it does   |
| `[optional]` | `number` | `10`     | Optional param |

**Returns**: `ReturnType`

\`\`\`typescript
// Usage example
\`\`\`

---

## Types

### TypeName

\`\`\`typescript
interface TypeName {
property: string;
}
\`\`\`

Fumadocs Components

<Callout type="info">Informational note</Callout>
<Callout type="warn">Warning message</Callout>
<Callout type="error">Error/danger message</Callout>

Guidelines

See WRITING_STYLE.md for complete guidelines. Key points:

  • Tone: Direct, second-person, no emojis
  • Examples: Progressive complexity, all must be valid TypeScript
  • Tables: Use Sharp-style nested parameter tables (see WRITING_STYLE.md)
  • Callouts: Use sparingly for warnings, beta features, security
  • Cross-references: Link related docs, add "See Also" sections
  • Navigation: Update meta.json when adding new pages

Process

  1. Explore the code - Read source files to understand the API
  2. Check existing docs - Look in content/docs/ for related pages
  3. Identify the audience - Who will read this? What do they need?
  4. Draft the structure - Outline sections before writing
  5. Write content - Fill in each section with examples
  6. Update navigation - Add to relevant meta.json if new page
  7. Add cross-references - Link from related docs

Begin

Analyze the conversation context to determine the documentation scope, read the relevant source code, and create comprehensive MDX documentation in content/docs/.