Web Monitor

Track web pages for changes. Stores snapshots, computes diffs, supports CSS selectors.

Triggers

Activate this skill when the user wants to:

• Watch a website for content changes
• Track price changes, new posts, or updated content on a page
• Set up page change alerts or notifications
• Check if a site has been updated since last visit
• Monitor a specific section of a page (with CSS selector)

NOT For

• Real-time alerting on dynamic topics — use the topic-monitor skill for news/topic monitoring with importance scoring
• Full page archival — this tracks diffs, not full crawl archives
• JavaScript-heavy SPAs — the monitor fetches raw HTML; dynamic content rendered by JS may not be captured accurately
• Monitoring APIs or webhooks — use cron + exec for structured data endpoints