Agent skill
docs-sync
Synchronizes documentation (README.md, CHANGELOG.md, API docs) with implementation. Preserves user content outside speckit markers. Updates are non-destructive and clearly delineated. Always run after /speckit.implement completes.
Install this agent skill to your Project
npx add-skill https://github.com/drillan/speckit-gates/tree/main/src/skills/docs-sync
Metadata
Additional technical details for this skill
- author
- drillan
- category
- automation
- repository
- https://github.com/drillan/speckit-gates
SKILL.md
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
- Content before the first marker is always preserved
- Content after the last marker is always preserved
- Content between different marker pairs is always preserved
- Only content within matching marker pairs is updated
- 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
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