Claude Skills by majiayu000

Debugging patterns for Cloudflare Workers. Activates when troubleshooting errors, checking logs, or investigating production issues.

Deploy and manage Cloudflare Workers, Pages, KV, R2, and D1 using wrangler CLI or MCP server. Use when working with Cloudflare services, serverless functions, or edge deployments.

Deploy and manage Cloudflare Workers, Pages, KV, R2, and D1 using wrangler CLI or MCP server. Use when working with Cloudflare services, serverless functions, or edge deployments.

This skill should be used when the user asks about "DNS performance", "zone settings", "DNS analytics", "domain configuration", "DNS report", "zone list", "DNS troubleshooting", "DNSSEC", "DNS latency", or needs to monitor and optimize Cloudflare DNS.

Performs low-level Cloudflare DNS operations including adding, updating, deleting DNS records, managing zone settings, and dynamic DNS updates via Cloudflare API. Use when need manual DNS record management, dynamic DNS updates, zone settings configuration, or operations outside domain management system. Triggers on "add DNS record", "update DNS", "delete DNS record", "dynamic DNS", "Cloudflare API", or "manual DNS management". Works with Cloudflare API v4, cf-dns.sh and cf-settings.sh helper ...

Comprehensive guide for managing Cloudflare DNS with Azure integration. Use when configuring Cloudflare as authoritative DNS provider for Azure-hosted applications, managing DNS records via API, setting up API tokens, configuring proxy settings, troubleshooting DNS issues, implementing DNS security best practices, or integrating External-DNS with Cloudflare for Kubernetes workloads.

Build stateful Durable Objects for real-time apps, WebSocket servers, coordination, and persistent state. Prevents 20 documented errors. Use when: implementing chat rooms, multiplayer games, rate limiting, session management, WebSocket hibernation, or troubleshooting class export, migration, WebSocket state loss, boolean binding, RPC streams, or binding errors.

Complete guide for Cloudflare Email Routing covering both Email Workers (receiving emails) and Send Email bindings (sending emails from Workers). Use when: setting up email routing, creating email workers, processing incoming emails, sending emails from Workers, implementing email allowlists/blocklists, forwarding emails with custom logic, replying to emails automatically, parsing email content, configuring MX records for email, troubleshooting email delivery issues, or encountering email wo...

Cloudflare Email Routing for receiving/sending emails via Workers. Use for email workers, forwarding, allowlists, or encountering Email Trigger errors, worker call failures, SPF issues.

Expert-level Cloudflare Workers, CDN, edge computing, and security services

Production-tested integration patterns for connecting React frontends to Cloudflare Worker backends with Hono, Clerk authentication, and D1 databases. Prevents common frontend-backend connection issues, CORS errors, auth token failures, and race conditions. Use when: connecting frontend to backend, implementing auth flow, setting up API calls, troubleshooting CORS, fixing race conditions, auth tokens not passing, frontend-backend connection errors, 401 errors, integrating Clerk with Workers,...

Production-ready starter project for React + Cloudflare Workers + Hono with core services (D1, KV, R2, Workers AI) and optional advanced features (Clerk Auth, AI Chat, Queues, Vectorize). Complete with planning docs, session handoff protocol, and enable scripts for opt-in features. Use when: starting new full-stack project, creating Cloudflare app, scaffolding web app, AI-powered application, chat interface, RAG application, need complete starter, avoid setup time, production-ready template,...

Wire Cloudflare Workers Env typings into Hono apps. Use when working in Cloudflare Workers + Hono, when the user mentions wrangler types, worker-configuration.d.ts, or typing Bindings/Env in Hono.

Connect Workers to PostgreSQL/MySQL with Hyperdrive's global pooling and caching. Use when: connecting to existing databases, setting up connection pools, using node-postgres/mysql2, integrating Drizzle/Prisma, or troubleshooting pool acquisition failures, TLS errors, or nodejs_compat missing. Prevents 11 documented errors.

Store and transform images with Cloudflare Images API and transformations. Use when: uploading images, implementing direct creator uploads, creating variants, generating signed URLs, optimizing formats (WebP/AVIF), transforming via Workers, or debugging CORS, multipart, AVIF limits, metadata stripping, cache issues, or error codes 9401-9413.

Store key-value data globally with Cloudflare KV's edge network. Use when: caching API responses, storing configuration, managing user preferences, handling TTL expiration, or troubleshooting KV_ERROR, 429 rate limits, eventual consistency, cacheTtl errors, wrangler types issues, or remote binding configuration.

Use when working with Cloudflare services (Workers, Pages, R2, D1, KV, DNS, SSL, WAF, Zero Trust, etc.). Provides comprehensive management via Wrangler CLI (primary) and direct REST API access for services not covered by Wrangler (DNS, SSL certificates, load balancers, security rules, analytics). Triggers: "deploy worker", "manage cloudflare", "cloudflare dns", "wrangler setup", "r2 bucket", "d1 database", "cloudflare api", "cf pages", "cloudflare ssl", "waf rules".

Build MCP servers on Cloudflare Workers - the only platform with official remote MCP support. TypeScript-based with OAuth, Durable Objects, and WebSocket hibernation. Prevents 24 documented errors. Use when: deploying remote MCP servers, implementing OAuth, or troubleshooting URL path mismatches, McpAgent exports, CORS issues, IoContext timeouts.

Deploy Next.js applications (App Router and Pages Router) to Cloudflare Workers using the OpenNext adapter. This skill should be used when deploying Next.js apps with SSR, ISR, or server components to Cloudflare's serverless platform. It covers setup for both new and existing projects, configuration requirements, development workflows, integration with Cloudflare services (D1, R2, KV, Workers AI), and prevention of 10+ documented errors including worker size limits, runtime compatibility, dat...

Deploy Next.js to Cloudflare Workers via OpenNext adapter. Use for SSR, ISR, App/Pages Router, or encountering worker size limits, runtime compatibility, connection scoping errors.

Use this skill whenever the user wants to improve or set up logging, tracing, metrics, and monitoring for Cloudflare Workers/Pages (e.g. Hono + TypeScript), including Wrangler tail, Workers Analytics, log structure, and integration with external tools like Sentry.

Cloudflare Pages - Full-stack JAMstack platform with global CDN, serverless functions, Git integration, and native bindings to Workers, KV, R2, D1, and Durable Objects

This skill should be used when the user asks about "R2", "D1", "KV", "Durable Objects", "Queues", "Vectorize", "Hyperdrive", "Workers Analytics", "Email Routing", "Browser Rendering", or discusses Cloudflare platform services, storage options, database choices, when to use which service, or integration patterns between Workers and platform products.

Build Python APIs on Cloudflare Workers using pywrangler CLI and WorkerEntrypoint class pattern. Includes Python Workflows for multi-step DAG automation. Prevents 11 documented errors. Use when: building Python serverless APIs, migrating Python to edge, or troubleshooting async errors, package compatibility, handler pattern mistakes, RPC communication issues.

Build async message queues with Cloudflare Queues for background processing. Use when: handling async tasks, batch processing, implementing retries, configuring dead letter queues, managing consumer concurrency, or troubleshooting queue timeout, batch retry, message loss, or throughput exceeded. Prevents 13 documented errors including multi-dev limitations, remote binding conflicts, and DLQ issues.

Use this skill to configure Cloudflare R2 buckets, access control, lifecycle policies, public/private assets, and integration with Hono Workers using read/write/delete/list operations and signed-access patterns.

Use when working with Cloudflare R2 object storage, D1 SQLite database, KV, or Workers integration - covers bindings, limits, gotchas, and best practices

Cloudflare R2 object storage - upload, download, list, delete files, presigned URLs. Trigger: When working with R2 storage, file uploads, object storage, presigned URLs.

This skill provides comprehensive knowledge for building applications with Cloudflare Sandboxes SDK, which enables secure, isolated code execution in full Linux containers at the edge. It should be used when executing untrusted code, running Python/Node.js scripts, performing git operations, building AI code execution systems, creating interactive development environments, or implementing CI/CD workflows that require full OS capabilities. Use when: Setting up Cloudflare Sandboxes, executing ...

Cloudflare Sandboxes SDK for secure code execution in Linux containers at edge. Use for untrusted code, Python/Node.js scripts, AI code interpreters, git operations.

Automatically validates Cloudflare Workers security patterns during development, ensuring proper secret management, CORS configuration, and input validation

Use this skill whenever the user wants to harden security for Cloudflare Workers/Pages APIs (e.g. Hono + TypeScript), including WAF-style protections, rate limiting, IP restrictions, secrets handling, and secure headers.

Configure and use Cloudflare Static Assets with React Router, ensuring compatibility across development and production environments with automatic fallback handling. Use when deploying React Router applications to Cloudflare Workers that need to access files from the public directory.

Expert guidance for deploying TypeScript SvelteKit apps to Cloudflare Workers (edge) with D1. Use when configuring @sveltejs/adapter-cloudflare, Wrangler config, Workers Assets, D1 bindings/migrations, or when writing precise step-by-step deployment instructions for SvelteKit on Cloudflare Workers/Pages with D1.

Migrate Cloudflare Workers to Bun with runtime compatibility analysis. Use when converting Workers to Bun, migrating from Cloudflare bindings, or moving from edge to server deployment.

Investigate and resolve Cloudflare configuration issues using API-driven evidence gathering. Use when troubleshooting ERR_TOO_MANY_REDIRECTS, SSL errors, DNS issues, or any Cloudflare-related problems. Focus on systematic investigation using Cloudflare API to examine actual configuration rather than making assumptions.

Sets up a new Cloudflare Tunnel from scratch for secure remote access to home network services. Use when creating a new tunnel, replacing an expired tunnel token, or setting up remote access for a fresh installation. Triggers on "setup cloudflare tunnel", "create tunnel", "new tunnel token", "configure remote access", "cloudflare tunnel from scratch", or "tunnel not configured". Works with .env, docker-compose.yml, and Cloudflare Zero Trust.

Diagnoses and fixes Cloudflare Tunnel connectivity issues including stuck tunnels, failed connections, Error 1033, and tunnel registration problems. Use when remote access not working, tunnel shows disconnected in dashboard, Error 1033 on tunnel connection, or cloudflared container restarting. Triggers on "tunnel not connecting", "tunnel down", "Error 1033", "remote access broken", "fix tunnel", or "cloudflared not working". Works with Cloudflare Tunnel (cloudflared), QUIC connection health, ...

Add bot protection with Turnstile (CAPTCHA alternative). Use when: protecting forms, securing login/signup, preventing spam, migrating from reCAPTCHA, integrating with React/Next.js/Hono, implementing E2E tests, or debugging CSP errors, token validation failures, Chrome/Edge first-load issues, multiple widget rendering bugs, timeout-or-duplicate errors, or error codes 100*/106010/300*/600*.

Build semantic search with Cloudflare Vectorize V2. Covers async mutations, 5M vectors/index, 31ms latency, returnMetadata enum changes, and V1 deprecation. Prevents 14 errors including dimension mismatches, TypeScript types, testing setup. Use when: building RAG or semantic search, troubleshooting returnMetadata, V2 timing, metadata index, dimension errors, vitest setup, or wrangler --json output.

Diagnose and create Cloudflare VPC Services for Workers to access private APIs in AWS, Azure, GCP, or on-premise networks. Use when troubleshooting dns_error, configuring cloudflared tunnels, setting up VPC service bindings, or routing Workers to internal services.

Set up Cloudflare Workers with Hono routing, Vite plugin, and Static Assets. Prevents 10 errors including export syntax, routing conflicts, Vite 8 nodejs_compat, base option regression, and cache corruption. Use when: creating Workers projects, configuring Hono/Vite, or troubleshooting export syntax, API route conflicts, HMR issues, or Vite 8+ compatibility.

Use this skill whenever the user wants to deploy, configure, or refine deployment of a Hono/TypeScript backend (or similar Worker) to Cloudflare Workers/Pages using Wrangler, including wrangler.toml, environments, bindings, and basic release workflows.

Cloudflare Workers, KV, Durable Objects, and edge computing development. Use for serverless APIs, caching, rate limiting, real-time features. Activate on "Workers", "KV", "Durable Objects", "wrangler", "edge function", "Cloudflare". NOT for Cloudflare Pages configuration (use deployment docs), DNS management, or general CDN settings.

Query and analyze Cloudflare Workers logs. Use for debugging workers, checking error rates, viewing request logs. Activates with phrases like "check worker logs", "what errors are in the worker", "cloudflare logs", "worker observability".

Build edge-first TypeScript applications on Cloudflare Workers. Covers Workers API, Hono framework, KV/D1/R2 storage, Durable Objects, Queues, and testing patterns. Use when creating serverless workers, edge functions, or Cloudflare-deployed services.

Cloudflare Workers AI essentials - text generation, embeddings, image generation, streaming. Trigger: When working with Workers AI, LLMs, text generation, embeddings, image generation.

This skill should be used when the user asks about "KV namespace", "R2 bucket", "D1 database", "Hyperdrive", "create binding", "list workers", "worker code", "storage binding", "database query", "object storage", "key-value store", "connection pooling", or needs to manage Cloudflare Workers storage and compute resources.

Complete CI/CD guide for Cloudflare Workers using GitHub Actions and GitLab CI. Use for automated testing, deployment pipelines, preview environments, secrets management, or encountering deployment failures, workflow errors, environment configuration issues.

Cloudflare Workers local development with Wrangler, Miniflare, hot reload, debugging. Use for project setup, wrangler.jsonc configuration, or encountering local dev, HMR, binding simulation errors.