← Back to Skills Marketplace
5893
Downloads
3
Stars
35
Active Installs
1
Versions
Install in OpenClaw
/install web-perf
Description
Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed.
Usage Guidance
Install only if you want the agent to inspect the target web project and use browser performance tooling. Consider pinning or separately reviewing the Chrome DevTools MCP package before running the suggested npx command, especially in sensitive environments.
Capability Analysis
Type: OpenClaw Skill
Name: web-perf
Version: 1.0.0
The skill is classified as suspicious primarily due to the 'Phase 5: Codebase Analysis' section in `SKILL.md`. This section instructs the AI agent to 'Search for configuration files' (e.g., `webpack.config.js`, `package.json`). While this action is plausibly related to web performance analysis, it implicitly instructs the agent to access and read local files. If the agent possesses file system access capabilities, this constitutes a high-risk behavior, even without clear malicious intent for exfiltration or unauthorized modification. Additionally, the `SKILL.md` recommends the user configure their environment by running `npx -y chrome-devtools-mcp@latest`, which introduces a supply chain risk as `npx -y` downloads and executes the latest version of a package without explicit confirmation, though this is a user setup instruction, not an agent action.
Capability Assessment
Purpose & Capability
The described capability is web performance analysis; inspecting build and package configuration files fits that purpose and does not by itself show credential access, exfiltration, or mutation.
Instruction Scope
The reviewed evidence points to bounded diagnostic instructions for performance analysis, not hidden role changes, prompt overrides, unrelated data access, or automatic high-impact actions.
Install Mechanism
The setup guidance references `npx -y chrome-devtools-mcp@latest`, which is user-directed but unpinned and therefore has normal supply-chain risk.
Credentials
Local project file reads and browser/devtools access are proportionate for performance auditing, though users should run it only in repositories and browser sessions they intend to analyze.
Persistence & Privilege
No artifact-backed evidence shows persistence, privilege escalation, background workers, credential harvesting, or durable local indexing.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install web-perf - After installation, invoke the skill by name or use
/web-perf - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of the web-perf skill – a web performance audit tool powered by Chrome DevTools MCP.
- Audits Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index) and provides detailed breakdowns.
- Identifies render-blocking resources, network dependency chains, and caching issues.
- Spots high-level accessibility gaps with a snapshot tool.
- Offers workflow and tool usage checklist for step-by-step auditing.
- Includes clear output formatting and actionable, prioritized recommendations.
- Guides analysis of codebase optimizations when source code is available; otherwise audits third-party sites externally.
Metadata
Frequently Asked Questions
What is Web Perf?
Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed. It is an AI Agent Skill for Claude Code / OpenClaw, with 5893 downloads so far.
How do I install Web Perf?
Run "/install web-perf" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Web Perf free?
Yes, Web Perf is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Web Perf support?
Web Perf is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Web Perf?
It is built and maintained by elithrar (@elithrar); the current version is v1.0.0.
More Skills