Docs Check Checkpoint

Documentation checkpoint that verifies docs are up-to-date with code changes.

What This Skill Does

1. •Analyzes what changed in the code
2. •Identifies documentation-relevant changes
3. •Checks if corresponding docs exist and are current
4. •Suggests documentation updates if needed
5. •Writes result to checkpoint file

Workflow

Step 1: Get Changed Files

# For uncommitted changes
git diff --name-only HEAD
git diff --name-only --cached

# For branch diff
git diff --name-only main...HEAD

Step 2: Categorize Changes

Identify what type of changes were made:

Step 3: Check Existing Documentation

Look for docs that might need updates:

# Common doc locations
ls README.md CHANGELOG.md docs/ *.md 2>/dev/null

# API docs
ls docs/API.md docs/api/ swagger.yaml openapi.yaml 2>/dev/null

# Check if changed files have corresponding docs
# e.g., if routes/api.js changed, check docs/API.md

Step 4: Analyze Documentation Gaps

For each significant change, check:

1. •API changes - Is there API documentation? Does it cover new endpoints?
2. •Config changes - Are new config options documented?
3. •Breaking changes - Is there a migration guide?
4. •New features - Is the feature documented for users?
5. •CHANGELOG - Is there a changelog entry?

Step 5: Create Structured Result

{
  "checkpoint": "docs-check",
  "timestamp": "2026-01-19T12:00:00Z",
  "passed": true,
  "changes_analyzed": 5,
  "suggestions": [
    {
      "type": "api",
      "file": "docs/API.md",
      "message": "New endpoint POST /api/spawn should be documented",
      "priority": "high"
    },
    {
      "type": "changelog",
      "file": "CHANGELOG.md",
      "message": "Consider adding changelog entry for new feature",
      "priority": "medium"
    }
  ],
  "summary": "2 documentation suggestions. None are blocking."
}

Result Fields:

• •passed: true if no critical documentation missing
• •changes_analyzed: number of changed files analyzed
• •suggestions: array of {type, file, message, priority: "high"|"medium"|"low"}
• •summary: brief human-readable summary

Step 6: Write Checkpoint File

mkdir -p .checkpoints
cat > .checkpoints/docs-check.json << 'EOF'
{
  "checkpoint": "docs-check",
  ...
}
EOF

Decision Criteria

Pass if:

• •No critical documentation gaps
• •Minor suggestions are acceptable

Fail if:

• •Breaking changes without migration guide
• •New public API without documentation
• •README claims features that don't exist

Suggestion priorities:

• •high: Should be documented before merge
• •medium: Should be documented soon
• •low: Nice to have, not blocking

Documentation Patterns to Check

API Changes

If files like routes/*.js, api/*.ts, endpoints/* changed:

• •Check docs/API.md or similar
• •Look for OpenAPI/Swagger specs
• •Verify new endpoints are documented

Configuration Changes

If files like config.js, .env.example, settings.json changed:

• •Check README configuration section
• •Verify new options are documented
• •Check for breaking config changes

CLI Changes

If argument parsing or command files changed:

• •Check --help output accuracy
• •Verify README usage section
• •Check man pages if applicable

Breaking Changes

Indicators of breaking changes:

• •Removed or renamed exports
• •Changed function signatures
• •Modified config schema
• •Database migration files

CHANGELOG

For any user-visible change:

• •Should have CHANGELOG entry
• •Entry should mention issue ID if applicable
• •Breaking changes should be clearly marked

Example Usage

When invoked as /docs-check:

Running Docs Check checkpoint...

Analyzing changed files...
Found 8 changed files:
- backend/routes/api.js (modified)
- backend/modules/spawn-handler.js (new)
- extension/hooks/useSpawn.ts (new)
- README.md (modified)
- docs/API.md (not modified)

Checking documentation coverage...

API changes detected:
- New endpoint: POST /api/spawn
- docs/API.md does not document this endpoint

New feature detected:
- Spawn functionality added
- README.md was updated (good!)

Result:
{
  "passed": true,
  "suggestions": [
    {
      "type": "api",
      "file": "docs/API.md",
      "message": "Document POST /api/spawn endpoint",
      "priority": "high"
    }
  ],
  "summary": "1 high-priority suggestion: API docs need update"
}

Checkpoint result written to .checkpoints/docs-check.json

Files to Always Check

Notes

• •This checkpoint is advisory by default (suggestions don't block)
• •For strict projects, configure to fail on high-priority suggestions
• •Always check CHANGELOG for any user-visible changes
• •Breaking changes MUST have documentation before merge