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. Biases towards retrieval from current documentation over pre-trained knowledge.
99
100%
Does it follow best practices?
Impact
95%
1.15xAverage score across 3 eval scenarios
Low
Low-risk findings worth noting
The canonical home for this skill is web-perf in cloudflare/skills
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
This skill’s required workflow mainly uses Chrome DevTools MCP tool calls (e.g., `navigate_page(url: "<target-url>")`, `performance_start_trace(...)`, `list_network_requests(...)`) which will cause runtime ingestion of the target page’s DOM/trace/network text (outsider-authored web content) into the agent context via the tool responses.
- Repository
- openai/plugins
- Commit
11c74d6
- Audited
- Security analysis
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.