开发技能

Migrate existing Cloudflare Sandbox apps from the stable SDK to the SDK 1.0 preview. Audit removed APIs, update the package and container image together, adapt process and terminal code, and validate the changes before production cutover.

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• Audit existing apps for APIs removed in the preview
• Update the SDK package and container image together
• Adapt command execution, terminals, and interpreter code

Integrate transactional email sending and incoming email routing with Cloudflare. The skill covers Workers and external applications, domain setup, message processing, and troubleshooting delivery issues such as authentication problems or unverified forwarding destinations.

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• Sending transactional emails from Workers or external apps
• Processing and forwarding incoming emails
• Setting up sending domains and bindings

Build or move Next.js applications to Cloudflare Workers using vinext, which implements Next.js APIs on Vite. This skill guides project setup, compatibility checks, migration, and deployment through the relevant upstream skills and documentation.

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• Starting a Next.js application on Cloudflare Workers
• Migrating an existing Next.js application to vinext
• Comparing vinext and OpenNext for a project

Build, debug, and review Cloudflare Durable Objects for applications that retain shared data and coordinate concurrent activity. It covers storage, real-time connections, scheduled tasks, configuration, and tests for features such as chat rooms and bookings.

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• Building chat rooms with shared state
• Coordinating inventory updates and bookings
• Implementing real-time notifications with WebSockets

Build, debug, and review agent applications on Cloudflare using the agents package. The skill guides implementation of persistent state, scheduled tasks, streaming chat, and integrations, consulting official documentation for the relevant APIs and configuration.

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• Build an agent that saves and synchronizes its state
• Add scheduled tasks and background workflows
• Implement streaming chat with saved messages

Develop code to collect website text and social media information. Combine lightweight extraction with browser-based fallbacks, inspect undocumented APIs, and detect paywalls or blocking pages so failed requests are not mistaken for useful content.

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• Extracting article text and titles from websites
• Adding browser fallbacks for JavaScript-heavy pages
• Detecting paywalls, login screens, and rate limits

Set up Tailwind CSS v4 and shadcn/ui in React projects using Vite. Configure reusable color variables and dark mode, troubleshoot theme switching, and follow templates and migration guidance when moving from Tailwind v3.

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• Set up Tailwind CSS v4 with shadcn/ui
• Implement light and dark theme switching
• Troubleshoot colors and CSS variables

Use structured templates to audit code, assess security threats, investigate performance, and review system architecture. Organize evidence, severity ratings, and metrics into reports with prioritized recommendations for immediate fixes and longer-term improvements.

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• Audit code quality and maintenance risks
• Map security threats and prioritize responses
• Analyze slow responses and resource bottlenecks

Create or update skills that give Claude specialized procedures, knowledge, and tool instructions. The guide covers defining use cases, organizing SKILL.md and supporting files, testing scripts, and validating a distributable skill package.

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• Turn a recurring workflow into a Claude skill
• Organize SKILL.md and supporting reference files
• Improve an existing skill after real use

Migrate code that calls OpenAI, Gemini, or Anthropic APIs to Amazon Bedrock. Assess the codebase, rewrite SDK calls, evaluate output quality, and prepare a branch for merging, or check model access without changing code.

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• Migrating existing AI API calls to Amazon Bedrock
• Evaluating output quality after switching to Bedrock
• Preparing a migration branch for review and merging

Build and deploy web and mobile apps with AWS Amplify Gen2. Define backend services in TypeScript, add authentication, data, file storage, APIs, and AI features, and connect them to supported frontend frameworks.

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• Starting a web or mobile app with Amplify Gen2
• Adding login, data access, and file uploads
• Connecting an existing backend to the frontend

Create a new agent project on AWS with AgentCore. Get help choosing a framework, generating the project structure, running it locally, and completing the first deployment and invocation, with explanations of the generated files.

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• Create a first agent project on AWS
• Compare Strands, LangGraph, and other supported frameworks
• Create and host a new MCP server

Connect an AgentCore agent to external APIs, MCP servers, and Lambda tools through AgentCore Gateway. Configure credentials and outbound authentication, and use Cedar policies, rules that control which tools an agent may call.

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• Connecting an agent to an external MCP server
• Exposing Lambda functions as agent tools
• Turning an OpenAPI specification into tools

Review a GitHub pull request, GitLab merge request, or local branch before merging. AWS DevOps Agent assesses correctness, release risks, and rollback concerns, then produces a saved report and concrete fixes, with optional automated testing.

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• Assess a GitHub pull request before merging
• Review release risks in a GitLab merge request
• Analyze local branch changes before release

Build or extend an application on AWS by inspecting existing code and gathering goals, constraints, and preferences through selectable questions. After approval, the skill writes the architectural scaffold and implementation directly into the project.

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• Build the first version of an app on AWS
• Add features to an existing AWS project
• Refactor code around project goals and constraints

Extend an existing AgentCore agent with memory across sessions, app integration, browser access, code execution, payments, or collaboration between agents. The skill also guides private network setup, model changes, migration from Bedrock Agent, and resource removal.

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• Add memory across conversations
• Call an agent from a web or mobile app
• Coordinate several agents

Connect AWS Lambda functions to DynamoDB tables with the required access permissions. Configure streams, which capture table changes, to trigger functions, and troubleshoot missing triggers, permission errors, or timeouts during event processing.

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• Connect a Lambda function to a DynamoDB table
• Trigger processing when DynamoDB data changes
• Investigate missing triggers or permission errors

Use the AWS Transform (ATX) CLI to inspect repositories, identify suitable code transformations, and run approved upgrades or migrations. Work locally on a few repositories or process larger collections through AWS Batch/Fargate.

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• Upgrade Java, Python, or Node.js versions
• Migrate AWS SDKs or application frameworks
• Transform many repositories through AWS Batch/Fargate

Write and debug AWS Step Functions workflows with branching, parallel tasks, retries, and approval callbacks. Use JSONata expressions to transform data, choose workflow types, test individual states with mock responses, and migrate existing JSONPath definitions.

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• Define order workflows with branching and retries
• Design workflows that pause for human approval
• Process large S3 or CSV datasets with Distributed Map

Build applications with the new EventBridge custom event buses, which route and retain events. Configure filtering, transformation, delivery, and replay, share buses across accounts, and investigate missing deliveries using logs and failure queues.

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• Routing order events to different services
• Investigating published events that never reach a queue
• Reprocessing events from the previous two days

Build multi-step AWS Lambda workflows that preserve progress across interruptions. Implement retries, waits, external callbacks, and error recovery, while checking replay behavior, the rerunning of handler code when an execution resumes.

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• Building long-running workflows that resume after interruptions
• Waiting for human approval or an external callback
• Adding retries and compensating actions after failures

Develop streaming data applications on Amazon Managed Service for Apache Flink. Get guidance on data connectors, saved processing state, resource sizing, monitoring, deployment, and version upgrades, accounting for constraints specific to the managed AWS service.

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• Build a streaming data processing application
• Connect Kinesis, Kafka, or Iceberg
• Investigate performance issues and restart loops

Add sign-up and login to web and mobile apps with Amazon Cognito and AWS Amplify client libraries. Configure multi-factor authentication, external login providers, session tokens, and API access restricted to signed-in users.

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• Add sign-up and login to a React app
• Configure Google or other external login providers
• Restrict API access to signed-in users

Write JavaScript or TypeScript code that uses AWS services through AWS SDK for JavaScript v3. Get patterns for authentication, S3 file handling, DynamoDB operations, pagination, error handling, and efficient client reuse.

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• Implement S3 downloads and large file uploads
• Read and write DynamoDB using native JavaScript types
• Configure AWS credentials and role assumption