WebPerf Snippets and Agent SKILLs: deterministic audits with Chrome DevTools MCP
Claude Code report showing Usercentrics scripts causing performance issues by combining 'preload' and 'async'. It recommends removing preloads or using fetchpriority='low' to avoid competing with critical LCP resources.
I've been using WebPerf Snippets in my audits for years.
Scripts to measure LCP, INP, CLS, TTFB, Render Blocking...
The next step: turning them into tools an AI agent can use autonomously.
But there's a design decision that makes all the difference.
🧵
#WebPerf #WebPerformance #AI #DevTools #MCP