# Changelog Scan

> Scan Codex changelog for new versions, features, and changes. Fetches official docs, parses release notes, and generates structured update report.

- Skill: `fusengine/changelog-scan-3` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add fusengine/changelog-scan-3`
- Raw SKILL.md: https://api.skillmd.com/api/skills/fusengine/changelog-scan-3/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: fusengine (https://skillmd.com/u/fusengine)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/fusengine/changelog-scan-3

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# Changelog Scan Skill

## Overview

Fetches and analyzes the official Codex changelog to detect new versions and changes.

## Data Sources

| Source | URL | Method |
|--------|-----|--------|
| Changelog | code.codex.com/docs/en/changelog.md | WebFetch |
| Docs Index | code.codex.com/docs/llms.txt | WebFetch |
| Hooks Ref | code.codex.com/docs/en/hooks.md | WebFetch |
| Plugins Ref | code.codex.com/docs/en/plugins-reference.md | WebFetch |
| CLI Ref | code.codex.com/docs/en/cli-reference.md | WebFetch |

## Workflow

1. **Fetch** changelog via WebFetch or scripts/fetch-changelog.sh
2. **Parse** version numbers and release dates
3. **Extract** changes per version (features, fixes, breaking)
4. **Compare** with last known version from state file
5. **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: `$CODEX_HOME/fusengine-cache/logs/00-changelog/{date}-state.json`

## References

- [Sources Reference](references/sources.md)
- [Report Template](references/templates/changelog-report.md)