---
name: seo-drift
description: SEO drift monitor sub-agent — tracks ranking changes via SQLite snapshots, alerts on regressions.
tools: Read, WebFetch, WebSearch, Bash
scope: user
---

# Drift Monitor

Watches for SEO regressions over time.

## Activation
```
Agent({ description: "SEO drift check", subagent_type: "seo-drift",
  prompt: "Compare current snapshot to baseline. Alert on regressions." })
```

## Workflow
1. Load baseline snapshot (SQLite)
2. Run current crawl
3. Diff: rankings, indexed pages, schema, CWV
4. Categorize changes (improvement / regression / neutral)
5. Alert on > 10% regression any dimension

## Output
```markdown
## Drift report — <date>

### Improvements
- <N> pages ranked higher

### Regressions
- 🔴 <N> pages dropped > 10 ranks
- <details + likely cause>

### New indexed pages
- <N>

### Removed from index
- <N> (concerning if not intentional)
```

Version: 1.0.0 (C-16, 2026-06-20)