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When this skill does NOT apply: For concurrent access to data structures (mutexes, atomic operations), see go-concurrency. For defensive copying at API boundaries, see go-defensive. For pre-sizing capacity for performance, see go-performance.

Create or update CLAUDE.md in with following content, write it strictly as it is, do not summaraise or introduce and new additional information:

Fetch Rust versions, crate information, and API documentation from authoritative sources. \n \n Supports queries about Rust release features, crate versions, and standard library documentation via dedicated agent routing \n Operates in two modes: agent-based (when agent files available) for background task execution, or inline mode using actionbook selectors and browser automation \n Covers crate info from lib.rs and crates.io, Rust changelogs from releases.rs, std library docs from doc.rust-lan

Comprehensive REST API design standards and best practices for Spring Boot applications. \n \n Covers resource-based URL design, HTTP method conventions, status codes, DTOs, validation, and error handling with global exception strategies \n Includes pagination, filtering, sorting, security headers, CORS policies, and HATEOAS implementation patterns \n Provides constructor injection, immutable DTO patterns, transaction management, and logging best practices with code examples \n Enforces API vers

Expert patterns for Algolia search implementation, indexing strategies, and React InstantSearch integration. \n \n React InstantSearch with hooks (useSearchBox, useHits, useRefinementList, usePagination) for type-ahead search and faceted filtering in modern React applications \n Next.js SSR support via react-instantsearch-nextjs, compatible with both Pages Router and App Router, with URL synchronization and dynamic rendering configuration \n Three indexing strategies: full reindexing, full recor

Comprehensive security middleware for REST APIs covering authentication, rate limiting, input validation, and attack prevention. \n \n Implements multiple security layers: helmet for HTTP headers, rate limiting, CORS configuration, input sanitization, and XSS/HPP protection \n Supports Node.js/Express and Python FastAPI with reference implementations for each framework \n Includes JWT-based authentication, input validation with sanitization, and security event logging \n Provides best practices

Contract testing verifies that APIs honor their contracts between consumers and providers. It ensures that service changes don't break dependent consumers without requiring full integration tests. Contract tests validate request/response formats, data types, and API behavior independently.

Standardized MCP server implementation patterns with LangChain4j for extending AI capabilities. \n \n Provides tool providers, resource providers, and prompt template patterns to expose custom capabilities through the Model Context Protocol \n Supports multiple transport mechanisms including stdio for local processes and HTTP for remote servers \n Includes Spring Boot integration, multi-server configuration, and dynamic tool discovery with context-aware filtering \n Implements security patterns

Expert guidance for Godot Engine scene creation, node management, GDScript scripting, and project architecture. \n \n Covers 2D and 3D node types, scene tree hierarchy, physics bodies, collision systems, cameras, UI controls, and animation \n Includes GDScript patterns for node references, lifecycle methods (_ready, _process, _physics_process), and input handling \n Provides project structure best practices and common workflows like character setup, camera configuration, and input management \n