Web Monitor

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name: web-monitor

description: 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.

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# Web Monitor

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

Triggers

Activate this skill when the user wants to:

NOT For

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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

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).

Tips