Documentation Auditing

Automated system to keep documentation complete, accurate, and current. Manages CLAUDE.md hierarchy and all project docs.

Purpose

Documentation drifts from code. This skill:

• Ensures every meaningful directory has CLAUDE.md
• Automatically updates docs when code changes
• Tracks freshness via git commits + timestamps
• Recommends structural improvements
• Uses git for review/approval

State File: .docsaudit.yaml

Tracks audit state for all docs.

Format:

version: 1

ignore:
  - node_modules/**
  - .git/**
  - dist/**
  - __pycache__/**

max_age_days: 90

audits:
  README.md:
    commit: abc123
    date: 2025-11-19T10:30:00Z
    scope: ["**/*"]

  src/auth/CLAUDE.md:
    commit: def456
    date: 2025-11-15T09:00:00Z
    # No scope = directory default (src/auth/**/*)

Bootstrap if missing:

• Create file with sensible defaults
• Scan existing docs
• Initialize all with current HEAD
• Infer scopes based on location

Scope System

Scope = glob patterns defining which files a doc describes

Default Scope (Automatic)

Every doc scopes to its directory:

• README.md (root) → **/* (whole project)
• src/auth/CLAUDE.md → src/auth/**/*
• docs/api.md → docs/**/*

Predictable, consistent, no special cases.

Explicit Override

docs/api.md:
  scope: ["src/api/**/*"]  # Track API code, not docs dir

Independent Docs

CONTRIBUTING.md:
  scope: []  # Explicit empty = no code dependencies

Staleness

Doc is stale if:

1. Files in scope changed since commit
2. More than max_age_days since date

Both triggers checked.

Audit Process

Step 1: Coverage Check

Goal: Every meaningful directory has CLAUDE.md

Process:

1. Find all directories (exclude hidden)
2. Check against ignore patterns
3. For non-ignored without CLAUDE.md:
   • Analyze contents
   • Would CLAUDE.md add value?
   • If yes: Create CLAUDE.md
   • If no: Add to ignore list

Decision Criteria:

Ask: "Would CLAUDE.md help understand this?"

Consider:

• Any meaningful code/content?
• Logic, utilities, modules?
• Config, data, assets needing explanation?
• Test fixtures, scripts, migrations?

If yes (even for 2-line doc) → create it.

Ignore only:

• Build artifacts (dist/, pycache)
• Dependencies (node_modules/)
• Git internals (.git/)

No file extension filtering - analyze actual content.

Step 2: Ignore Review

Goal: Un-ignore directories that grew meaningful

Process:

1. For each ignored directory:
   • Analyze current contents
   • Has it grown complex/meaningful?
   • Still makes sense to ignore?
2. If should be documented:
   • Remove from ignore list
   • Create CLAUDE.md
   • Report: "Un-ignored X - grew to Y modules"
3. If still ignorable:
   • Keep in ignore list

Examples of growth:

• tests/fixtures/ added 10 complex test scenarios
• scripts/ now has deployment orchestration
• utils/ grew from 1 to 8 helper modules

Step 3: Freshness Check

Goal: Update stale docs automatically

Process:

For each doc in audits:

1. Get scope (explicit or directory default)

2. Check staleness via TWO triggers:

   bashCopy

   # Code staleness
   git diff <last-commit>..HEAD -- <scope-patterns>
   
   # Time staleness
   days_since(date) > max_age_days
   

3. If stale:

   • Analyze code changes
   • Read current doc
   • Update doc to reflect changes
   • Preserve structure/style
   • Write updated doc

4. Update audit record:

   yamlCopy

   audits:
     path/to/doc.md:
       commit: <new-HEAD>
       date: <now>
   

Parallel processing: Use Task tool for multiple docs simultaneously.

Step 4: Sanity Check

Goal: Recommend structural improvements

Process:

Analyze overall doc structure, detect issues:

Consolidate:

• Compare doc scopes
• Check content similarity (>70% overlap)
• Recommend: "Merge A + B - they cover same topic"

Move:

• Doc location vs scope mismatch
• Example: docs/database.md with scope src/db/**/*
• Recommend: "Move to src/db/CLAUDE.md"

Delete:

• Scope patterns match zero files
• Doc obsolete, no code described
• Recommend: "Delete or archive X - no code in scope"

Split:

• Doc too large (>500 lines)
• Multiple distinct topics
• Recommend: "Split X into Y sections"

Merge:

• Multiple tiny docs (<50 lines each)
• Related scopes, similar topics
• Recommend: "Merge A, B, C into single guide"

Present recommendations, don't auto-apply - bigger decisions need human judgment.

Step 5: Update State

Write final .docsaudit.yaml with:

• New audit records
• Updated ignore list
• Current timestamp

All changes staged for git review.

CLAUDE.md Generation

When: Creating new CLAUDE.md file

Analysis:

1. Read directory structure
2. List all files
3. Sample code files:
   • Imports/exports
   • Class/function names
   • Module patterns
4. Check existing README/comments
5. Understand purpose and relationships

Template:

# [Module Name]

## Purpose
[1-2 sentences: what this does]

## Key Components
- [file/class]: [purpose]
- [file/class]: [purpose]

## Dependencies
- Uses: [other modules]
- Used by: [other modules]

## Notes
[Important context, conventions, gotchas]

Keep concise:

• 2-line CLAUDE.md better than none
• Add value, avoid obvious
• Focus on non-obvious context
• Explain "why" not "what"

Examples:

# tests/fixtures/auth

JWT tokens and auth payloads for testing.
Tokens are expired but have valid structure.

# scripts/deployment

Production deployment utilities.
Run via `just deploy <env>` - never manually.
Handles DB migrations, health checks, rollback.

Doc Updates

When: Doc is stale (code or time)

Process:

1. Get changes:

   bashCopy

   git diff <last-commit>..HEAD -- <scope>
   

2. Summarize:

   • Files added/removed/modified
   • Key code changes (new functions, refactored modules)
   • Significant diffs

3. Read current doc:

   • Understand structure
   • Identify sections
   • Note style

4. Determine updates:

   • Which sections affected by changes?
   • What needs adding/removing/updating?
   • Preserve unaffected sections

5. Rewrite:

   • Update affected sections
   • Maintain doc structure
   • Match existing style
   • Keep concise

6. Write updated doc

Preserve:

• Overall structure
• Heading hierarchy
• Writing style
• Unaffected content

Update:

• Obsolete information
• New features/modules
• Changed behavior
• Refactored code

Output Format

Structure:

Documentation Audit Report

Coverage (CLAUDE.md files):
  Created (N):
    + path/to/new.md (reason)

  Un-ignored (N):
    + path/to/unignored.md (reason)

Freshness (content updates):
  Updated (N):
    ~ path/to/updated.md (summary)

  Already current (N):
    ✓ path/to/current.md

Recommendations:
  ⚠ Issue: description
  ⚠ Issue: description

Files changed: N
Review: git diff
Commit: git commit -am "docs: automated audit"

Symbols:

• + Created/added
• ~ Updated/modified
• ✓ Already current
• ⚠ Recommendation

Ignore Patterns

System defaults:

ignore:
  - node_modules/**
  - .git/**
  - dist/**
  - build/**
  - __pycache__/**
  - "*.pyc"
  - .pytest_cache/**
  - .mypy_cache/**
  - coverage/**
  - htmlcov/**

Add project-specific:

• Generated code directories
• Vendor dependencies
• Build outputs
• IDE files

Review regularly - directories grow, become meaningful.

Error Handling

Git errors:

• git diff fails → report error, continue others
• File locked → skip, report
• Merge conflict → manual resolution needed

Analysis errors:

• Can't parse code → create basic CLAUDE.md
• Unclear structure → ask for manual review
• Missing scope files → flag as potential delete

Fail gracefully, report clearly.

Workflow

Standard:

/docsaudit
# Reviews output
git diff
# If good:
git commit -am "docs: automated audit updates"
# If not:
git restore .

First time (bootstrap):

/docsaudit --init
# Creates .docsaudit.yaml
# Initializes all existing docs
git add .docsaudit.yaml
git commit -m "docs: initialize audit tracking"

# Then regular audits
/docsaudit

Specific directory:

/docsaudit src/auth
# Audits only src/auth and below

Dry run:

/docsaudit --dry-run
# Reports what would change
# Doesn't modify anything

Performance

Parallel processing:

• Use Task tool for multiple doc updates
• Each doc update independent
• Faster for projects with many docs

Git efficiency:

• git diff is cheap, recalculate always
• No caching needed
• Incremental by design (only stale docs updated)

Success Criteria

System working if:

1. Every meaningful directory has CLAUDE.md
2. Docs update when code changes
3. Structural issues flagged
4. Workflow: audit → review → commit
5. Zero manual tracking needed

Philosophy

Comprehensive coverage:

• CLAUDE.md everywhere it adds value
• Even 2-line docs beat nothing
• Context is cheap, confusion is expensive

Automated maintenance:

• System does the work
• Git provides review
• Commit or revert

Continuous improvement:

• Regular audits catch drift
• Sanity checks improve structure
• Documentation evolves with code

Trust but verify:

• Automation creates/updates
• Human reviews via git
• Best of both worlds