context-dot-dev/webdog — reverse-engineered prompt

Build me a self hosted web app for monitoring websites so I can paste in any URL and get alerted when something changes. I want three kinds of watches, one for site links from a sitemap, one for page content, and one for product prices. Each watch should let me choose how often it checks, add a short note about what I care about, and save a history of snapshots.

When something changes, show a clear before and after view with line by line diffs, screenshots from each check, and an optional AI summary in plain English explaining what changed and why it matters. I also want notifications through Slack, email, and webhooks, plus an in app alerts inbox with read and unread states. Please include simple sign in, team invites, switching between teams, and a public read only share page for any monitored site. It should work with a database and a background worker that runs on a schedule. If anything is unclear, look up current docs online and make sensible choices.