# Update Doc

> Use when user says 'update docs', 'sync documentation', 'refresh docs', or after code changes need documenting. Updates llmdoc system based on recent code changes.

- Skill: `majiayu000/update-doc` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/update-doc`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/update-doc/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/update-doc

---


# /update-doc

This skill updates the project's llmdoc documentation to reflect recent code changes.

## Pre-fetched Context

- **Llmdoc structure:** !`find llmdoc -name "*.md" 2>/dev/null | head -50`
- **Recent changes (3 commits):** !`git diff HEAD~3..HEAD --stat 2>/dev/null | head -30`
- **Affected files:** !`git diff HEAD~3..HEAD --name-only 2>/dev/null | head -30`
- **Llmdoc index:** !`cat llmdoc/index.md 2>/dev/null | head -50`

## Actions

1. **Step 1: Analyze Changes**
   - If `$ARGUMENTS` is provided, use it as the description of what changed.
   - Otherwise, analyze the pre-fetched git diff to understand what changed.

2. **Step 2: Identify Impacted Concepts**
   - Map changed files to llmdoc concepts:
     - Config files (`.eslintrc`, etc.) → `reference/coding-conventions.md`
     - Auth files → relevant architecture docs
     - New features → may need new docs
   - Create a list of impacted documents.

3. **Step 3: Update Documents**
   - For each impacted document, use `recorder` agent with this prompt:
     ```
     Task: Update documentation for <concept_name>.
     Changes: <relevant git diff summary>
     Mode: content-only
     Principle: Use fewest words necessary.
     ```

4. **Step 4: Synchronize Index**
   - After all updates complete, invoke a single `recorder` agent to:
     - Re-scan `/llmdoc` directory
     - Ensure `index.md` is consistent and up-to-date
     - Mode: full

5. **Step 5: Report**
   - Summarize all documents created/updated/deleted.

## Update Principles

- **Minimality**: Use fewest words necessary
- **Accuracy**: Based on actual code, not assumptions
- **No Code Blocks**: Reference with `path/file.ext:line` format
- **LLM-Friendly**: Write for machine consumption