Web Monitor

Monitor web pages for content changes and get alerts. Track URLs, detect updates, view diffs. Use when asked to watch a website, track changes on a page, mon...

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skill

Browser Automation

intermediate

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Last updated: April 23, 2026

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Real data. Real impact.

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Emerging

Active Users

Developers

Quick Start

Manual Installation

No automatic installation available. Please visit the source repository for installation instructions.

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Web Monitor

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

Quick Start

# Add a URL to watch
uv run --with beautifulsoup4 python scripts/monitor.py add "https://example.com" --name "Example"
Add with CSS selector (monitor specific section)
uv run --with beautifulsoup4 python scripts/monitor.py add "https://example.com/pricing" -n "Pricing" -s ".pricing-table"
Check all watched URLs for changes
uv run --with beautifulsoup4 python scripts/monitor.py check
Check one specific URL
uv run --with beautifulsoup4 python scripts/monitor.py check "Example"
List watched URLs
uv run --with beautifulsoup4 python scripts/monitor.py list
View last diff
uv run --with beautifulsoup4 python scripts/monitor.py diff "Example"
View current snapshot
uv run --with beautifulsoup4 python scripts/monitor.py snapshot "Example" --lines 50
Remove

uv run --with beautifulsoup4 python scripts/monitor.py remove "Example"

Commands

Command	Args	Description
`add`	`<url> [-n name] [-s selector]`	Add URL to watch, take initial snapshot
`remove`	`<url-or-name>`	Stop watching a URL
`list`	`[-f json]`	List all watched URLs with stats
`check`	`[url-or-name] [-f json]`	Check for changes (all or one)
`diff`	`<url-or-name>`	Show last recorded diff
`snapshot`	`<url-or-name> [-l lines]`	Show current snapshot

Output Symbols

🔔 CHANGED — page content changed (shows diff preview)
✅ No changes
📸 Initial snapshot taken
❌ Error fetching

Data

Stored in

~/.web-monitor/

(override with

WEB_MONITOR_DIR

env var):

```
watches.json
```
— watch list config
```
snapshots/
```
— stored page content + diffs

Tips

Use
```
--selector
```
to monitor specific elements (prices, article lists, etc.)
Use
```
--format json
```
for programmatic checking (heartbeat integration)
CSS selectors require beautifulsoup4 (included via
```
--with
```
flag)
Text is normalized to reduce noise from timestamps, whitespace, ads

Web Monitor

AI Skill Market Insights

Quick Start

Manual Installation

TEAR & SHARE

Tags

Exa MCP Server

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Web Monitor

Quick Start

Add with CSS selector (monitor specific section)

Check all watched URLs for changes

Check one specific URL

List watched URLs

View last diff

View current snapshot

Remove

Commands

Output Symbols

Data

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