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Web Monitor

Name: Web Monitor
Author: dinghaibin

作者 BIN · GitHub ↗ · v1.0.0 · MIT-0

cross-platform ⚠ suspicious

总下载

当前安装

版本数

在 OpenClaw 中安装

/install dinghaibin-web-monitor

功能描述

Monitor web pages for content changes with CSS selector targeting, change detection via hashing, and notification integration. Use for price tracking, conten...

使用说明 (SKILL.md)

Web Monitor — Page Change Detection & Alerts

Track web pages for content changes using hash-based comparison. Supports CSS selector extraction, interval-based monitoring, change history, and configurable notification delivery.

Quick Start

# Compare current page with previous snapshot
python scripts/monitor.py --url https://example.com --compare state.json

# Monitor with a CSS selector
python scripts/monitor.py --url https://example.com --selector ".price" --compare state.json

Usage

python scripts/monitor.py --url URL [OPTIONS]

Options:
  --url URL              Page URL to monitor (required)
  --selector SELECTOR    CSS selector to extract specific content
  --compare FILE         Compare with previous snapshot from FILE
  --state-file FILE      Save current state to FILE (default: state.json)
  --interval SEC         Auto-monitor at interval (seconds)
  --notify COMMAND       Command to run on change detected
  --json                 Output as JSON
  --max-retries N        Connection retries on failure (default: 3)

Examples

# Simple page check
python scripts/monitor.py --url https://example.com/page --compare state.json

# Monitor a price element
python scripts/monitor.py --url https://shop.example.com/product \
  --selector ".product-price" --compare price-state.json

# Continuous monitoring
python scripts/monitor.py --url https://example.com \
  --interval 3600 --compare state.json --notify "echo 'Changed!'"

# JSON output for pipeline
python scripts/monitor.py --url https://example.com --json

State File Format

{
  "url": "https://example.com/page",
  "selector": ".price",
  "hash": "sha256hash...",
  "timestamp": "2026-01-15T14:30:00Z"
}

Features

Hash-based change detection — reliable content comparison
CSS selector extraction — monitor specific page sections
State persistence — stores snapshots for comparison
Interval monitoring — automatic periodic checks
Notification hooks — trigger commands on changes
No external dependencies — uses only Python stdlib
SSL/HTTPS support — secure page fetching
JSON output — structured data for automation

安全使用建议

Review carefully before installing. Avoid using it for sensitive or security-critical monitoring unless TLS verification is fixed, use only trusted notification commands, and enable `--hash-only` when monitoring pages whose content should not be saved locally.

能力评估

⚠ Purpose & Capability

The monitoring, hashing, state-file, and notification behavior is purpose-aligned, but scripts/monitor.py disables TLS verification (`ctx.check_hostname = False`, `ctx.verify_mode = ssl.CERT_NONE`) while SKILL.md advertises `SSL/HTTPS support — secure page fetching`.

ℹ Instruction Scope

The skill documents a broad notification hook (`--notify COMMAND`) and scripts/monitor.py executes it with `os.system(args.notify)` when a change is detected; this is disclosed and purpose-aligned, but users should treat it as arbitrary shell execution.

✓ Install Mechanism

No install spec or automatic dependency installation is present; the included script uses Python standard-library imports, and optional notification examples are user-directed.

⚠ Credentials

For a web monitor that may trigger alerts from remote page content, disabling HTTPS validation in scripts/monitor.py is not proportionate because network attackers can spoof monitored content.

ℹ Persistence & Privilege

Persistence is local and user-selected, but scripts/monitor.py stores full fetched content by default in output data (`'content': content if not args.hash_only else None`); use `--hash-only` for private pages.

如何使用

确保已安装 OpenClaw（本地或 Docker 部署）
在对话框中输入安装命令：/install dinghaibin-web-monitor
安装完成后，直接呼叫该 Skill 的名称或使用 /dinghaibin-web-monitor 触发
根据 Skill 的参数说明提供必要输入，即可获得结构化输出

版本历史

v1.0.0

Initial release

元数据

Slug dinghaibin-web-monitor

版本 1.0.0

许可证 MIT-0

累计安装 0

当前安装数 0

历史版本数 1

常见问题

Web Monitor 是什么？

Monitor web pages for content changes with CSS selector targeting, change detection via hashing, and notification integration. Use for price tracking, conten... 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件，目前累计下载 56 次。

如何安装 Web Monitor？

在 OpenClaw 或 Claude Code 对话框中运行命令「/install dinghaibin-web-monitor」即可一键安装，无需额外配置。

Web Monitor 是免费的吗？

是的，Web Monitor 完全免费，采用 MIT-0 许可证，可自由下载、安装和使用。

Web Monitor 支持哪些平台？

Web Monitor 跨平台运行，可在任意部署了 OpenClaw / Claude Code 的环境中使用（cross-platform）。

谁开发了 Web Monitor？

由 BIN（@dinghaibin）开发并维护，当前版本 v1.0.0。