SKILL.md

name	create-changelog
description	Create a CHANGELOG.md following keepachangelog.com conventions with version history backfilled from GitHub releases or git tags. Use when the user asks to "create a changelog", "add a changelog", "initialize changelog", "start a changelog", "set up changelog", "generate changelog", or "backfill changelog".

Create Changelog

Create a changelog backfilled with version history.

Step 1: Run /changelog-rules Skill

Run /changelog-rules to load shared changelog conventions.

Step 2: Backfill Version History

Collect release history from the most authoritative source available:

1. GitHub releases (preferred): Run gh release list --limit 100 --json tagName,name,publishedAt,body to get release notes. For each release, parse the body into changelog entries.
2. Git tags (fallback): If no GitHub releases exist, run git tag --sort=-v:refname to list tags. For each consecutive tag pair, run git log <older-tag>..<newer-tag> --oneline to collect commit summaries.

For each version, classify entries into the standard change types and apply the changelog-worthiness criteria per /changelog-rules.

Step 3: Check for Existing Changelog

If the changelog file already exists, warn the user and confirm before overwriting.

Step 4: Write Changelog

Write the changelog following the /changelog-rules file structure and conventions.

Step 5: Present the Result

Briefly summarize how many versions were backfilled and which source was used (GitHub releases or git tags).