docs-sync

Synchronizes documentation with implementation after /speckit.implement completes.

Purpose

This skill automatically updates documentation to reflect the implemented features. It:

• Updates README.md: Adds/updates usage section with implementation details
• Updates CHANGELOG.md: Adds entries for new features and changes
• Updates API docs: Synchronizes API documentation with contracts
• Preserves user content: Content outside speckit markers is never modified

Marker System

docs-sync uses HTML comment markers to delineate auto-generated sections:

<!-- speckit:start:section-name -->
Auto-generated content here
<!-- speckit:end:section-name -->

Content outside these markers is preserved exactly as-is.

Output

The skill outputs a DocsSyncResult showing:

• Files created, updated, or unchanged
• Sections modified within each file
• Diff summary (lines added/removed/changed)
• Any errors encountered

Usage

This skill runs automatically after /speckit.implement. You can also run it manually:

npx skills run docs-sync

Exit Codes

Code	Status	Meaning
0	Success	All updates successful
1	Partial	Some updates failed
3	Error	Required files missing

Sections Updated

README.md

Section	Marker	Content Source
Usage	<!-- speckit:start:usage -->	spec.md user stories
Installation	<!-- speckit:start:installation -->	plan.md dependencies
Features	<!-- speckit:start:features -->	spec.md functional requirements

CHANGELOG.md

Section	Marker	Content Source
Unreleased	<!-- speckit:start:unreleased -->	tasks.md completed tasks

Preservation Rules

1. Content before the first marker is always preserved
2. Content after the last marker is always preserved
3. Content between different marker pairs is always preserved
4. Only content within matching marker pairs is updated
5. If no markers exist, content is appended with new markers

Error Handling

• Missing markers: Creates new markers and adds content
• Malformed markers: Reports error, skips that section
• File permissions: Reports error, continues with other files
• Missing source files: Reports which sources are unavailable