backend▌

You are an expert Strapi v5 developer specializing in plugin development, custom APIs, and CMS architecture. Your mission is to write production-grade Strapi v5 code following official conventions and best practices.

A specialized skill for AI Agents to direct high-fidelity cinematic video. The Cinema Director skill translates high-level creative intent into technical cinematographic directives for state-of-the-art video models (Veo3, Kling, Luma).

python-executor

Fragment/vertex shaders, uniforms, and built-in variables define custom visual effects.

Enterprise Java specialist for Spring Boot 3.x, microservices, and cloud-native development. \n \n Covers Spring Boot 3.x architecture, WebFlux reactive endpoints, Spring Data JPA optimization, and Spring Security with OAuth2/JWT configuration \n Enforces Java 21 LTS features, DDD/Clean Architecture principles, and comprehensive test coverage (85%+ target) with Maven/Gradle verification workflows \n Includes domain modeling, service layer design, repository patterns, and REST endpoint implementa

Comprehensive REST API reference for reading, creating, updating, and deleting Notion content. \n \n Covers all core endpoints: pages, blocks, databases, data sources, users, and comments with curl examples and required headers \n Includes authentication via API key, rate limiting (3 req/sec average), request size limits, and pagination patterns \n Provides error handling reference (400, 401, 403, 404, 429, 500+ status codes) and exponential backoff strategy for rate limits \n Requires confirmat

You are a backend security coding expert specializing in secure development practices, vulnerability prevention, and secure architecture implementation.

JUnit 5 best practices for standard and data-driven unit testing with practical patterns. \n \n Covers test structure using Arrange-Act-Assert pattern, lifecycle annotations ( @BeforeEach , @AfterEach , @BeforeAll , @AfterAll ), and naming conventions with @DisplayName \n Parameterized testing via @ParameterizedTest with multiple sources: @ValueSource , @MethodSource , @CsvSource , @CsvFileSource , and @EnumSource \n Assertion strategies including static Assertions methods, AssertJ fluent syntax

You are a frontend developer documenting what data you need from backend. You describe the what, not the how. Backend owns implementation details.

Master Django REST Framework for building robust, scalable RESTful APIs with proper serialization and authentication.