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Webpage Screenshot
by
Malenconiaprincep
· GitHub ↗
· v1.0.0
2428
Downloads
0
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9
Active Installs
1
Versions
Install in OpenClaw
/install webpage-screenshot
Description
打开指定网页并截图为图片文件。在用户要求对某 URL 截图、保存网页为图片、或需要网页快照时使用。
Usage Guidance
This skill can do what it says (take webpage screenshots) but its instructions expect you to run a project npm script and to install Playwright via npx — actions that will download and execute code. Before installing or invoking: 1) confirm the repository/script you will run (inspect package.json and the screenshot script) because npm scripts can run arbitrary commands; 2) prefer the MCP/browser snapshot mode if you only need a quick preview and want to avoid installing packages; 3) run npm/npx steps in a sandboxed environment (container/VM) if you must install Playwright; 4) ask the publisher for an explicit install spec or a self-contained script (or a known CLI dependency) so you can review what will be executed. If you cannot inspect the script or do not trust the project source, do not run the npm-based method.
Capability Analysis
Type: OpenClaw Skill
Name: webpage-screenshot
Version: 1.0.0
The `SKILL.md` file instructs the AI agent to execute a shell command (`npm run screenshot`) with user-provided arguments (`<URL>`, `[输出路径]`). This pattern introduces a significant shell injection vulnerability if the OpenClaw agent does not rigorously sanitize user inputs before executing the command. While the skill's stated purpose (webpage screenshot) is benign, the direct command execution with unsanitized user input poses a critical risk for arbitrary command execution on the host system, classifying it as suspicious due to this vulnerability.
Capability Assessment
Purpose & Capability
Name/description (webpage screenshots) matches the instructions (npm script or MCP browser). However the skill metadata claims no required binaries or env vars while the SKILL.md plainly requires npm/npx and Playwright (a browser). That undeclared dependency is an inconsistency.
Instruction Scope
SKILL.md tells the agent to run a project-provided npm script (npm run screenshot) and to run 'npx playwright install chromium'. Running an arbitrary project script can execute any code in the repository and access local files; the instructions do not constrain or validate the script, nor do they warn about sandboxing. The MCP browser option is lower-risk but only provides snapshots, not files.
Install Mechanism
There is no install spec in the skill bundle, but the instructions require running 'npm install' and 'npx playwright install chromium' which will download packages and browser binaries from external registries. That is a moderate risk because it pulls code/binaries at runtime without being declared in metadata or audited by the registry.
Credentials
The skill does not request any environment variables, credentials, or config paths. There are no explicit credential requests inconsistent with the stated purpose.
Persistence & Privilege
always is false and there is no installation step that persists or modifies other skills or system-wide settings. The skill does not request elevated persistence privileges.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install webpage-screenshot - After installation, invoke the skill by name or use
/webpage-screenshot - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
打开指定网页并截图为 PNG
Metadata
Frequently Asked Questions
What is Webpage Screenshot?
打开指定网页并截图为图片文件。在用户要求对某 URL 截图、保存网页为图片、或需要网页快照时使用。 It is an AI Agent Skill for Claude Code / OpenClaw, with 2428 downloads so far.
How do I install Webpage Screenshot?
Run "/install webpage-screenshot" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Webpage Screenshot free?
Yes, Webpage Screenshot is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Webpage Screenshot support?
Webpage Screenshot is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Webpage Screenshot?
It is built and maintained by Malenconiaprincep (@malenconiaprincep); the current version is v1.0.0.
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