GB-Power-Market-JJ 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, monitor for new posts/content, set up page change alerts, or check if a site has been updated. Supports CSS selectors for targeted monitoring.

install

source · Clone the upstream repo

git clone https://github.com/GeorgeDoors888/GB-Power-Market-JJ

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/GeorgeDoors888/GB-Power-Market-JJ "$T" && mkdir -p ~/.claude/skills && cp -r "$T/openclaw-skills/skills/bloodandeath/keats-web-monitor" ~/.claude/skills/georgedoors888-gb-power-market-jj-web-monitor && rm -rf "$T"

OpenClaw · Install into ~/.openclaw/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/GeorgeDoors888/GB-Power-Market-JJ "$T" && mkdir -p ~/.openclaw/skills && cp -r "$T/openclaw-skills/skills/bloodandeath/keats-web-monitor" ~/.openclaw/skills/georgedoors888-gb-power-market-jj-web-monitor && rm -rf "$T"

manifest: openclaw-skills/skills/bloodandeath/keats-web-monitor/SKILL.md

source content

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

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). For OpenClaw workspace integration, set

WEB_MONITOR_DIR=$WORKSPACE/data/web-monitor

(where

$WORKSPACE

is your agent workspace path).

```
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