# Harvest Monitor

> Web change monitoring - track changes on pages, detect updates, changelog diffs

- Skill: `majiayu000/harvest-monitor` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/harvest-monitor`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/harvest-monitor/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/harvest-monitor

---


# Harvest Monitor

Track changes on web pages over time. Compare current content against cached versions to detect updates, new releases, breaking changes, and documentation modifications.

## Usage

```bash
# Monitor a page for changes
/harvest-monitor https://docs.example.com/changelog

# Compare against last cached version
/harvest-monitor https://docs.example.com/api --diff

# Track multiple pages
/harvest-monitor --watchlist ~/.claude/cache/agents/harvest/watchlist.json
```

## How It Works

1. Fetch current page content
2. Check cache for previous version
3. Compute diff (content-level, not HTML-level)
4. Categorize changes (added, removed, modified)
5. Report significant changes
6. Update cache with current version

## Output

```markdown
# Change Report: [URL]
> Checked: [timestamp]
> Previous: [cached timestamp]
> Status: CHANGED / NO CHANGE

## Changes Detected
### Added
- [New content]

### Modified
- [Changed content - before → after]

### Removed
- [Removed content]

## Impact Assessment
[What these changes mean for our project]
```

## Watchlist Format

```json
{
  "pages": [
    {
      "url": "https://docs.example.com/changelog",
      "frequency": "daily",
      "notify": ["migrator", "shipper"]
    }
  ]
}
```

## Integration

- **migrator**: Track dependency changelogs for breaking changes
- **shipper**: Monitor deployment status pages
- **tech-radar**: Track technology evolution

## Rules

- Cache previous versions locally
- Content-level diff, not HTML diff
- Ignore style/layout changes
- Only report meaningful content changes
- Max 1 check per hour per URL