| name | changelog-scan |
| description | Scan Claude Code changelog for new versions, features, and changes. Fetches official docs, parses release notes, and generates structured update report. Use when: checking for new Claude Code versions, features, or changes since the last known release. |
| argument-hint | [--since <version>] |
| user-invocable | true |
Changelog Scan Skill
Overview
Fetches and analyzes the official Claude Code changelog to detect new versions and changes.
Data Sources
| Source | URL | Method |
|---|
| Changelog | code.claude.com/docs/en/changelog.md | WebFetch |
| Docs Index | code.claude.com/docs/llms.txt | WebFetch |
| Hooks Ref | code.claude.com/docs/en/hooks.md | WebFetch |
| Plugins Ref | code.claude.com/docs/en/plugins-reference.md | WebFetch |
| CLI Ref | code.claude.com/docs/en/cli-reference.md | WebFetch |
Workflow
- Fetch changelog via the harness CLI (ported from the old
fetch-changelog into @fusengine/harness):
bun ${CLAUDE_PLUGIN_ROOT}/../node_modules/@fusengine/harness/dist/cli/bin.mjs changelog
It fetches code.claude.com/docs/en/changelog.md, parses versions (current MDX <Update label="X.Y.Z"> format + legacy ## vX.Y.Z fallback), writes state to ~/.claude/logs/00-changelog/<date>-state.json, and prints JSON {latest, new_since_last_check, recent_versions}. WebFetch on the same URL is the manual fallback.
- Parse version numbers and release dates
- Extract changes per version (features, fixes, breaking)
- Compare with last known version from state file
- Generate report using templates/changelog-report.md
Version Detection
Parse patterns from changelog:
## vX.Y.Z or ## X.Y.Z - Version headers### Breaking Changes - Breaking section### New Features - Features section### Bug Fixes - Fixes section
State File
Location: ~/.claude/logs/00-changelog/{date}-state.json
References
