Testing and QA

LangChain4J testing requires specialized strategies due to the non-deterministic nature of LLM responses and the complexity of AI workflows. This skill provides comprehensive patterns for unit testing with mocks, integration testing with Testcontainers, and end-to-end testing for RAG systems, AI Services, and tool...

Orchestration through Claude Code's built-in Agent Tool

This skill provides patterns for unit testing @ExceptionHandler methods and @ControllerAdvice classes using MockMvc. It covers testing exception-to-error-response transformations, HTTP status codes, error message formatting, validation error handling, and custom permission evaluators without full integration test...

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. This skill covers patterns for working with DynamoDB using AWS SDK for Java 2.x, including the Enhanced Client for type-safe operations, batch operations, transactions, and Spring Boot...

This skill provides guidance for building declarative AI Services with LangChain4j using interface-based patterns, annotations for system and user messages, memory management, tools integration, and advanced AI application patterns that abstract away low-level LLM interactions.

Configure AWS RDS databases (Aurora, MySQL, PostgreSQL) with Spring Boot applications for production-ready connectivity. This skill provides patterns for datasource configuration, connection pooling with HikariCP, SSL connections, environment-specific configurations, and integration with AWS Secrets Manager for secure...

Source details, install context, and public review data are available on the full page.

Source details, install context, and public review data are available on the full page.

Create a Geoffrey Moore-style positioning statement that clearly articulates who your product serves, what need it addresses, how it's categorized, what benefit it delivers, and how it differs from alternatives. Use this when you need to align stakeholders on product strategy, guide messaging, or test if your value...

Source details, install context, and public review data are available on the full page.

Comprehensive guide for creating and managing skills in Claude Code with auto-activation system, following Anthropic's official best practices including the 500-line rule and progressive disclosure pattern.

This skill provides patterns for unit testing Spring caching annotations (@Cacheable, @CacheEvict, @CachePut) without full Spring context. It covers testing cache behavior, hits/misses, invalidation strategies, cache key generation, and conditional caching using in-memory cache managers.

Configure AWS service clients, authentication, timeouts, HTTP clients, and implement best practices for AWS SDK for Java 2.x applications. This skill provides essential patterns for building robust, performant, and secure integrations with AWS services.

Frame epics as testable hypotheses using an if/then structure that articulates the action or solution, the target beneficiary, the expected outcome, and how you'll validate success. Use this to manage uncertainty in product development by making assumptions explicit, defining lightweight experiments ("tiny acts of...

Transform text content into structured Obsidian Canvas files with support for MindMap and freeform layouts.

This skill provides comprehensive guidance for working with Amazon RDS (Relational Database Service) using the AWS SDK for Java 2.x, covering database instance management, snapshots, parameter groups, and RDS operations.

Guide product managers through diagnosing whether they're doing context stuffing (jamming volume without intent) or context engineering (shaping structure for attention). Use this to identify context boundaries, fix "Context Hoarding Disorder," and implement tactical practices like bounded domains, episodic retrieval,...

Evaluate the financial impact of pricing changes (price increases, new tiers, add-ons, discounts) using ARPU/ARPA analysis, conversion impact, churn risk, NRR effects, and CAC payback implications. Use this to make data-driven go/no-go decisions on proposed pricing changes with supporting math and risk assessment.

Deploy web projects to Netlify using the Netlify CLI with intelligent detection of project configuration and deployment context.

Derivatives-trading-usds-futures request on Binance using authenticated API endpoints. Requires API key and secret key for certain endpoints. Return the result in JSON format.

Create an initial, assumption-based persona profile that synthesizes available user research, market data, and stakeholder knowledge into a working hypothesis about your target user. Use this to align teams early in product development, guide initial design decisions, and identify gaps in understanding that require...

Uniwind 1.5.0+ / Tailwind CSS v4 / React Native 0.81+ / Expo SDK 54+

This skill provides comprehensive patterns for AWS Key Management Service (KMS) using AWS SDK for Java 2.x. Focus on implementing secure encryption solutions with proper key management, envelope encryption, and Spring Boot integration patterns.

AWS Lambda is a compute service that runs code without the need to manage servers. Your code runs automatically, scaling up and down with pay-per-use pricing. Use this skill to implement AWS Lambda operations using AWS SDK for Java 2.x in applications and services.