openwebf-host-performance-metrics

WebF performance metrics—FP (First Paint), FCP (First Contentful Paint), and LCP (Largest Contentful Paint)—measure rendering stages. Use this Skill to instrument these timings directly on Flutter WebF hosts, capturing lifecycle events and establishing baseline measurements across devices.

dumpLoadingState provides detailed breakdowns of loading phases in WebF. This Skill uses dumpLoadingState to pinpoint performance bottlenecks during initialization and rendering, enabling you to isolate which stage causes slowness.

This Skill provides scaffolding templates—perf/loading-state-events, perf/loadingstate-dump, and perf/lcp-content-verification—that automate instrumentation setup. Add these templates to your WebF project and compare baseline measurements to track performance regression.

Yes. This Skill instruments first-render slowness detection by capturing FP, FCP, and LCP timings alongside dumpLoadingState breakdowns, letting you verify content rendering and identify render-blocking resources in WebF hosts.

This Skill satisfies requirements to integrate MCP performance APIs as part of its instrumentation workflow. It provides scaffolding and integration patterns so you don't need to wire these APIs manually.

Capture FP, FCP, LCP, and loading-state timings using this Skill's templates on your target devices. Compare measurements across runs and devices to establish reproducible baselines that reveal performance variance and bottlenecks.