webperf-loadingIntelligent loading performance analysis with automated workflows for TTFB investigation (DNS/connection/server breakdown), render-blocking detection, script...
Install via ClawdBot CLI:
clawdbot install nucliweb/webperf-loadingGrade Fair — based on market validation, documentation quality, package completeness, maintenance status, and authenticity signals.
Sends data to undocumented external endpoint (potential exfiltration)
post → https://example.com/hero.avifPotentially destructive shell commands in tool definitions
exec(Calls external URL not in known-safe list
https://github.com/nucliweb/webperf-snippetsAI Analysis
The skill appears to be a legitimate web performance analysis tool using Chrome DevTools. The 'UNKNOWN_DATA_SINK' signal likely refers to a benign example URL within a script (e.g., checking resource hints), and the 'UNSAFE_SHELL' signal is a false positive from analyzing JavaScript code snippets that use `exec()` for internal browser APIs, not system shell commands. No evidence of credential harvesting, obfuscation, or unauthorized data exfiltration was found in the provided definition.
Generated Mar 21, 2026
An online retailer experiences slow page loads during peak traffic, leading to cart abandonment. Using the Complete Loading Performance Audit workflow, the team identifies render-blocking third-party scripts and optimizes TTFB through server breakdown analysis, improving conversion rates.
A news website struggles with flash of invisible text (FOIT) affecting user experience. The Font Loading Optimization workflow helps audit font usage, validate preloads, and eliminate render-blocking fonts, ensuring faster content readability.
A SaaS platform notices sluggish interactions after deploying new features. The Script Performance Deep Dive workflow analyzes script loading patterns, separates first vs third-party impacts, and resolves async/defer conflicts to enhance responsiveness.
A travel booking site faces high TTFB due to slow API responses. The Server/Backend Performance Investigation workflow breaks down DNS, connection, and server times, identifying inefficient third-party endpoints for optimization.
An educational platform has bloated CSS causing slow initial renders. The CSS Optimization Workflow detects critical CSS, analyzes media queries, and reduces inline CSS overhead to improve FCP for global learners.
Agencies or freelancers offer specialized web performance audits using this skill to diagnose loading issues for clients. They charge per audit or retainer, focusing on metrics like TTFB and FCP to drive client ROI through faster sites.
Companies integrate this skill into their monitoring or development platforms to provide automated performance insights. Revenue comes from subscription tiers offering advanced analytics, such as script breakdowns and resource hint validation.
Large enterprises use this skill internally to maintain high-performance web applications, reducing bounce rates and infrastructure costs. It supports continuous optimization workflows, indirectly boosting revenue through improved user engagement.
💬 Integration Tip
Integrate with Chrome DevTools MCP via the mcp-server field for seamless script execution; use cross-skill features like Core Web Vitals for comprehensive audits.
Scored Apr 19, 2026
Audited Apr 16, 2026 · audit v1.0
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