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cloudflare/web-perf

Analysiert die Webleistung mithilfe von Chrome DevTools MCP. Misst Core Web Vitals (LCP, INP, CLS) und ergänzende Metriken (FCP, TBT, Speed Index), identifiziert renderblockierende Ressourcen, Netzwerkabhängigkeitsketten, Layoutverschiebungen, Caching-Probleme und Zugänglichkeitslücken. Verwenden Sie es, wenn Sie aufgefordert werden, die Seitenladeleistung, Lighthouse-Scores oder die Website-Geschwindigkeit zu auditieren, zu profilieren, zu debuggen oder zu optimieren. Bevorzugt die Abfrage aktueller Dokumentation gegenüber vortrainiertem Wissen.

Was ist web-perf?

Die Fähigkeit `cloudflare/web-perf` ist ein leistungsstarkes Werkzeug für Entwickler und KI-Agenten, um Webseiten mithilfe der Chrome DevTools MCP (Model Context Protocol) einer detaillierten Leistungsanalyse zu unterziehen. Sie erfasst essentielle Core Web Vitals wie Largest Contentful Paint (LCP), Interaction to Next Paint (INP) und Cumulative Layout Shift (CLS) sowie ergänzende Metriken wie First Contentful Paint (FCP), Total Blocking Time (TBT) und den Speed Index. Darüber hinaus identifiziert das Tool renderblockierende Ressourcen, Netzwerkabhängigkeitsketten, Layoutverschiebungen, ineffizientes Caching und Zugänglichkeitslücken. Diese Fähigkeit ist besonders nützlich, wenn ein Audit, Profiling, Debugging oder eine Optimierung der Seitenladegeschwindigkeit und Lighthouse-Scores angefordert wird. Sie basiert auf der Chrome DevTools MCP und bevorzugt die Abfrage aktueller Dokumentation gegenüber vortrainiertem Wissen, was eine hohe Präzision und Aktualität der Analyseergebnisse gewährleistet. Unterstützte Plattformen sind unter anderem Claude Code, Cursor, Codex und andere KI-gestützte Entwicklungsumgebungen, die das MCP-Protokoll implementieren.

Funktioniert mit~Claude Code~Codex CLI~Cursor

Part ofAgent Workflows

npx skills add https://github.com/cloudflare/skills/tree/main/skills/web-perf

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Dokumentation

Was macht web-perf?

Individual skills in this repo

This repo contains 15 individual skills — each has its own dedicated page.

cloudflare/agents-sdk

Build AI agents on Cloudflare Workers using the Agents SDK. Load when creating stateful agents, durable workflows, real-time WebSocket apps, scheduled tasks, MCP servers, chat applications, voice agents, or browser automation. Covers Agent class, state management, callable RPC, Workflows, durable execution, queues, retries, observability, and React hooks. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/building-ai-agent-on-cloudflare

Builds AI agents on Cloudflare using the Agents SDK with state management, real-time WebSockets, scheduled tasks, tool integration, and chat capabilities. Generates production-ready agent code deployed to Workers. Use when: user wants to "build an agent", "AI agent", "chat agent", "stateful agent", mentions "Agents SDK", needs "real-time AI", "WebSocket AI", or asks about agent "state management", "scheduled tasks", or "tool calling". Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/building-mcp-server-on-cloudflare

Builds remote MCP (Model Context Protocol) servers on Cloudflare Workers with tools, OAuth authentication, and production deployment. Generates server code, configures auth providers, and deploys to Workers. Use when: user wants to "build MCP server", "create MCP tools", "remote MCP", "deploy MCP", add "OAuth to MCP", or mentions Model Context Protocol on Cloudflare. Also triggers on "MCP authentication" or "MCP deployment". Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/cloudflare

Comprehensive Cloudflare platform skill covering Workers, Pages, storage (KV, D1, R2), AI (Workers AI, Vectorize, Agents SDK), feature flags (Flagship), networking (Tunnel, Spectrum), security (WAF, DDoS), and infrastructure-as-code (Terraform, Pulumi). Use for any Cloudflare development task. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/cloudflare-email-service

Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing). Use when building email sending (Workers binding or REST API), email routing, Agents SDK email handling, or integrating email into any app — Workers, Node.js, Python, Go, etc. Also use for email deliverability, SPF/DKIM/DMARC, wrangler email setup, MCP email tools, or when a coding agent needs to send emails. Even for simple requests like "add email to my Worker" — this skill has critical config details.

cloudflare/cloudflare-one

Design, configure, troubleshoot, or review Cloudflare One Zero Trust and SASE deployments. Use cloudflare-one-migrations for migration planning from other vendors.

cloudflare/durable-objects

Create and review Cloudflare Durable Objects. Use when building stateful coordination (chat rooms, multiplayer games, booking systems), implementing RPC methods, SQLite storage, alarms, WebSockets, or reviewing DO code for best practices. Covers Workers integration, wrangler config, and testing with Vitest. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/sandbox-migrate-to-next

Migrate Cloudflare Sandbox apps from stable @cloudflare/sandbox to @cloudflare/sandbox@next (SDK 1.0 preview). Use sandbox-next for apps already on the preview.

cloudflare/sandbox-next

Build or maintain Cloudflare Sandbox apps on @cloudflare/sandbox@next (SDK 1.0 preview). Use sandbox-migrate-to-next when porting a stable app.

cloudflare/sandbox-sdk

Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/sandbox-stable

Build or maintain Cloudflare Sandbox apps on the stable @cloudflare/sandbox package. Use sandbox-next for preview apps and sandbox-migrate-to-next for stable-to-preview migrations.

cloudflare/skills

Build, migrate, and deploy Next.js apps on Cloudflare Workers with vinext. Use when starting a Next.js project on Cloudflare, moving an existing app to Workers, choosing between vinext and OpenNext, or setting up vinext for Workers. For setup, migration, or deployment, install vinext's upstream skills with `npx skills add cloudflare/vinext` if missing, then read and follow the applicable skill and docs.

cloudflare/turnstile-spin

Set up, repair, or migrate to Cloudflare Turnstile bot verification in an existing frontend and backend, including server-side Siteverify.

cloudflare/workers-best-practices

Reviews and authors Cloudflare Workers code against production best practices. Load when writing new Workers, reviewing Worker code, configuring wrangler.jsonc, or checking for common Workers anti-patterns (streaming, floating promises, global state, secrets, bindings, observability). Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

cloudflare/wrangler

Cloudflare Workers CLI for deploying, developing, and managing Workers, KV, R2, D1, Vectorize, Hyperdrive, Workers AI, Containers, Queues, Workflows, Pipelines, and Secrets Store. Load before running wrangler commands to ensure correct syntax and best practices. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.