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Focused instruction packs that teach a coding agent one job well. Browse the catalog and use any of them inside a RiverX project.

18,175Skills

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18,175 skills

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Unified Memoryaffaan-m/eccShare durable, inspectable context and handoffs between Claude, Codex, Hermes, Cursor, OpenCode, and other agents through the local ECC Memory Vault. Use when an agent must save work state, transfer context, resume another agent's task, or search shared project knowledge.02 Unified Notifications Opsaffaan-m/eccGitHub、Linear、デスクトップアラート、フック、接続された通信インターフェースを網羅する、統合されたECCネイティブワークフローとして通知を運用する。真の問題がアラートルーティング、重複排除、エスカレーション、またはインボックス崩壊である場合に使用する。01 Unify Balancecirclefin/skillsBuild browser or server unified cross-chain USDC balances with Circle App Kit or standalone Unified Balance Kit. Supports deposit, spend, getBalances, removeFund, delegates, Forwarding Service, EVM and Solana browser wallets, private keys, and Circle Wallets adapters without direct Gateway contracts or attestation handling. Unified balance operations require no kit key. Use when building chain-abstracted USDC flows or using @circle-fin/app-kit, @circle-fin/unified-balance-kit, depositFor, addDelegate, or getBalances.010 Uninstallanthropics/claude-for-legal>01 Uniprot Databasegoogle-deepmind/science-skills>-06 Unisecurityguard Academic Whistleblower Archivereason-machines/security-skillsArchive and documentation platform for academic employment transparency and whistleblowing in Chinese higher education institutions01 Uniswap Monitor Teneoteneoprotocolai/teneo-skillsAI agent for Uniswap Monitor via Teneo Protocol. Use this skill when the user needs Uniswap Monitor via the bundled Teneo CLI and you need the live commands, arguments, or pricing before execution.01 Unit Economicsanthropics/financial-servicesAnalyze unit economics for PE targets — ARR cohorts, LTV/CAC, net retention, payback periods, revenue quality, and margin waterfall. Essential for software/SaaS, recurring revenue, and subscription businesses. Use when evaluating revenue quality, building a cohort analysis, or assessing customer economics. Triggers on "unit economics", "cohort analysis", "ARR analysis", "LTV CAC", "net retention", "revenue quality", or "customer economics".01 Unit Test Application Eventsgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing Spring application events. Validates event publishing with ApplicationEventPublisher, tests @EventListener annotation behavior, and verifies async event handling. Use when writing tests for event listeners, mocking application events, or verifying events were published in your Spring Boot services.01 Unit Test Bean Validationgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing Jakarta Bean Validation (JSR-380), including @Valid, @NotNull, @Min, @Max, @Email constraints with Hibernate Validator. Generates custom validator tests, constraint violation assertions, validation groups, and parameterized validation tests. Validates data integrity logic without Spring context. Use when writing validation tests, bean validation tests, or testing custom constraint validators.03 Unit Test Boundary Conditionsgiuseppe-trisciuoglio/developer-kitProvides edge case, corner case, boundary condition, and limit testing patterns for Java unit tests. Validates minimum/maximum values, null cases, empty collections, numeric overflow/underflow, floating-point precision, and off-by-one scenarios using JUnit 5 and AssertJ. Use when writing .java test files to ensure code handles limits, corner cases, and special inputs correctly.03 Unit Test Cachinggiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing Spring Cache annotations (@Cacheable, @CachePut, @CacheEvict). Generates test code that mocks cache managers, verifies cache hit/miss behavior, tests cache key generation with SpEL expressions, validates eviction strategies, and checks conditional caching scenarios. Triggers: caching tests, test Spring cache, mock cache, Spring Boot caching, cache hit/miss verification, @Cacheable testing.01 Unit Test Config Propertiesgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing `@ConfigurationProperties` classes with `@ConfigurationPropertiesTest`. Validates property binding, tests validation constraints, verifies default values, checks type conversions, and mocks property sources for Spring Boot configuration properties. Use when testing application configuration binding, validating YAML or application.properties files, verifying environment-specific settings, or testing nested property structures.02 Unit Test Controller Layergiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing REST controllers using MockMvc and @WebMvcTest. Generates controller tests that validates request/response mapping, validation, exception handling, and HTTP status codes. Use when testing web layer endpoints in isolation for API endpoint testing, Spring MVC tests, mock HTTP requests, or controller layer unit tests.04 Unit Test Exception Handlergiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing `@ExceptionHandler` and `@ControllerAdvice` in Spring Boot applications. Validates error response formatting, mocks exceptions, verifies HTTP status codes, tests field-level validation errors, and asserts custom error payloads. Use when writing Spring exception handler tests, REST API error tests, or mocking controller advice.02 Unit Test JSON Serializationgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing JSON serialization/deserialization with Jackson and `@JsonTest`. Validates JSON mapping, custom serializers, date formats, and polymorphic types. Use when testing JSON serialization, validating custom serializers, or writing JSON unit tests in Spring Boot applications.01 Unit Test Mapper Convertergiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing mappers, converters, and bean mappings. Validates entity-to-DTO and model transformation logic in isolation. Generates executable mapping tests with MapStruct and custom converter test coverage. Use when writing mapping tests, converter tests, entity mapping tests, or ensuring correct data transformation between DTOs and domain objects.02 Unit Test Parameterizedgiuseppe-trisciuoglio/developer-kitProvides parameterized testing patterns with JUnit 5, generates data-driven unit tests using @ParameterizedTest, @ValueSource, @CsvSource, @MethodSource. Creates tests that run the same logic with multiple input values. Use when writing data-driven Java tests, multiple test cases from single method, or boundary value analysis.01 Unit Test Scheduled Asyncgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing Spring `@Scheduled` and `@Async` methods using JUnit 5, CompletableFuture, Awaitility, and Mockito. Covers mocking task execution and timing, verifying execution counts, testing cron expressions, validating retry behavior, and simulating thread pool behavior. Use when testing background tasks, cron jobs, periodic execution, scheduled tasks, or thread pool behavior.02 Unit Test Security Authorizationgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing Spring Security with `@PreAuthorize`, `@Secured`, `@RolesAllowed`. Validates role-based access control and authorization policies. Use when testing security configurations and access control logic.05 Unit Test Service Layergiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing service layer with Mockito. Creates isolated tests that mock repository calls, verify method invocations, test exception scenarios, and stub external API responses. Use when testing service behaviors and business logic without database or external services.02 Unit Test Utility Methodsgiuseppe-trisciuoglio/developer-kitProvides patterns for testing utility classes, static methods, and helper functions. Validates pure functions, null handling, edge cases, and boundary conditions. Generates AssertJ assertions and @ParameterizedTest for string utils, math utils, validators, and collection helpers. Use when testing utils, test helpers, helper functions, static methods, or verifying utility code correctness.03 Unit Test Vue Piniagithub/awesome-copilotWrite and review unit tests for Vue 3 + TypeScript + Vitest + Pinia codebases. Use when creating or updating tests for components, composables, and stores; mocking Pinia with createTestingPinia; applying Vue Test Utils patterns; and enforcing black-box assertions over implementation details.02 Unit Test Wiremock REST APIgiuseppe-trisciuoglio/developer-kitProvides patterns for unit testing external REST APIs using WireMock. Stubs API responses, verifies request details, simulates failures (timeouts, 4xx/5xx errors), and validates HTTP client behavior without real network calls. Use when testing service integrations with external APIs or mocking HTTP endpoints.02 Unit Testingpetrkindlmann/qa-skills>-02 Unit Testing Frameworkaj-geddes/useful-ai-prompts>09 Unit Testing Test Generatesickn33/agentic-awesome-skillsGenerate comprehensive, maintainable unit tests across languages with strong coverage and edge case focus.01 Unit Testsbklit/bklit-ui|01 Unitymindrally/skillsExpert in Unity and C# game development with performance optimization patterns01 Unity Animationgamedev-skills/awesome-gamedev-agent-skills>02 Unity Build Pipelinegamedev-skills/awesome-gamedev-agent-skills>02 Unity Csharp Scriptinggamedev-skills/awesome-gamedev-agent-skills>02 Unity Developerrmyndharis/antigravity-skillsBuild Unity games with optimized C# scripts, efficient rendering,01 Unity Developersickn33/agentic-awesome-skillsBuild Unity games with optimized C# scripts, efficient rendering, and proper asset management. Masters Unity 6 LTS, URP/HDRP pipelines, and cross-platform deployment.01 Unity Ecs Patternswshobson/agentsMaster Unity ECS (Entity Component System) with DOTS, Jobs, and Burst for high-performance game development. Use when building data-oriented games, optimizing performance, or working with large entity counts.02 Unity Input Systemgamedev-skills/awesome-gamedev-agent-skills>02 Unity Navmeshgamedev-skills/awesome-gamedev-agent-skills>01 Unity Physicsgamedev-skills/awesome-gamedev-agent-skills>02 Unity Scriptableobjectsgamedev-skills/awesome-gamedev-agent-skills>02 Unity Tilemap 2dgamedev-skills/awesome-gamedev-agent-skills>01 Unity Vrc Udon Sharpniaka3dayo/agent-skills-vrc-udon>-050 Unity Vrc World SDK 3niaka3dayo/agent-skills-vrc-udon>013 Univer CLIdream-num/skillsUse when installing or operating Univer CLI for .univer files, spreadsheets, documents, slides, Base databases, Board canvases, cross-Unit embedding, worktrees, Facade authoring, inspection, verification, import/export, screenshots, or viewer handoff.01 Universal Elementsdylantarre/animation-principlesUse when animating any UI element not covered by specific skills, or when applying general animation principles across multiple element types01 Universal Emotiondylantarre/animation-principlesUse when you need to achieve any emotional outcome through animation—provides a framework for mapping Disney principles to any target emotion.01 Universal Fallbackdylantarre/animation-principlesUse when the animation domain is unclear or spans multiple contexts—provides general-purpose Disney animation principle guidance.01 Universal Industrydylantarre/animation-principlesUse when designing animations for any industry or when industry-specific guidelines do not apply01 Universal Mindsetdylantarre/animation-principlesUse when approaching any animation task—establishing foundational thinking patterns, teaching animation principles, or when none of the specialized thinking styles quite fit the situation.01

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