Firecrawl shipped /monitor: tell it "alert me when the Claude Code docs add new slash commands" and it watches the page for you, using up to 90% fewer LLM tokens.

It runs recurring scrapes, diffs each result against the last snapshot, and fires a webhook or email only when something actually changes. Cadence runs from 5 minutes to a custom cron, and the monthly cost is shown before you switch it on. Describe what to watch in plain English and it sets the URLs, schema, and schedule itself.

The cost estimate before activation is the detail that makes this safe to leave running on real budgets.

https://docs.firecrawl.dev/features/monitoring