Claude Code Subagents · page 7

Use this agent when you need to validate code quality through testing, including running unit and integration tests, analyzing test coverage, validating error handling, checking performance requirements, or verifying build processes. This agent should be called after implementing new features or making significant code changes to ensure everything works as expected. Examples:\n\n<example>\nContext: The user has just finished implementing a new API endpoint and wants to ensure it works correctly.\nuser: "I''ve implemented the new user authentication endpoint"\nassistant: "Great! Now let me use the tester agent to run the test suite and validate the implementation"\n<commentary>\nSince new code has been written, use the Task tool to launch the tester agent to run tests and ensure everything works properly.\n</commentary>\n</example>\n\n<example>\nContext: The user wants to check test coverage after adding new features.\nuser: "Can you check if our test coverage is still above 80%?"\nassistant: "I''ll use the tester agent to analyze the current test coverage and provide a detailed report"\n<commentary>\nThe user is asking about test coverage metrics, so use the tester agent to run coverage analysis.\n</commentary>\n</example>\n\n<example>\nContext: After fixing a bug, ensuring the fix doesn''t break existing functionality.\nuser: "I''ve fixed the database connection issue in the auth module"\nassistant: "Let me use the tester agent to run the test suite and ensure the fix doesn''t introduce any regressions"\n<commentary>\nAfter bug fixes, use the tester agent to validate that existing tests still pass.\n</commentary>\n</example>

Use this agent when the user needs UI/UX execution support including interface implementation, design-system polish, responsive layouts, animations, accessibility review, or design documentation. Examples:\n\n<example>\nContext: User wants to implement a new landing page from an approved direction\nuser: "I need a modern landing page for our SaaS product with a hero section, features, and pricing"\nassistant: "I''ll use the ui-ux-designer agent to translate that approved direction into a polished implementation plan and UI output."\n<commentary>The user is requesting UI/UX execution work, so delegate to the ui-ux-designer agent to handle the design-aware implementation and polish.</commentary>\n</example>\n\n<example>\nContext: User has implemented a new feature and wants design review\nuser: "I''ve added a new dashboard widget, can you review the design?"\nassistant: "Let me first capture the current UI and then use the ui-ux-designer agent to analyze and provide design recommendations."\n<commentary>Use screenshot tools to capture current state, then delegate to ui-ux-designer for expert design analysis and suggestions.</commentary>\n</example>\n\n<example>\nContext: User mentions design inconsistencies\nuser: "The buttons across different pages look inconsistent"\nassistant: "I''ll use the ui-ux-designer agent to audit the design system and propose a more consistent implementation."\n<commentary>Design-system work requires the ui-ux-designer agent to analyze, document, and improve consistent design patterns.</commentary>\n</example>\n\n<example>\nContext: Proactive design optimization opportunity\nuser: "Here''s the new signup form I just built"\nassistant: "Let me use the ui-ux-designer agent to review the form design for accessibility, user experience, and mobile responsiveness."\n<commentary>Even without an explicit design brief, ui-ux-designer can help ensure design quality and best practices during execute-phase polish.</commentary>\n</example>

UPDATE PROCESS MODE - Analyze execution, generate rule improvements, update plan files and context. Use after completing EXECUTE mode to reconcile deviations and capture learnings.

VALIDATE MODE - Convert a written plan into an executable contract. Runs two-layer parallel fan-out (infra, test coverage, breaking changes, security + per-section feasibility agents), synthesizes findings, presents validate-menu to user, then writes validate-contract section into the plan file. Mandatory phase between PLAN and EXECUTE in RIPER-5 sequence.

Review code changes for quality, security, and best practices. Proactively use this after code modifications.

Run tests and report results concisely. Use this after code changes to verify everything works.

Analyze log files and extract actionable insights. Use when troubleshooting issues or investigating incidents.

Explore and analyze API-related code. Use when investigating endpoints, routing, or HTTP handling.

Explore and analyze authentication-related code. Use when investigating auth flows, session management, or security.

Explore and analyze database-related code. Use when investigating data models, queries, or persistence.

Analyze root cause of bugs after location is identified. Second step in bug investigation.

Implement bug fixes after analysis is complete. Third step in bug fix pipeline.

Locate the source of bugs in the codebase. First step in bug investigation.

Verify bug fixes by running tests. Final step in bug fix pipeline.

Generate comprehensive API documentation by scanning Express route files.

Pipeline Stage 2 - Generate API documentation from a route manifest.

Pipeline Stage 3 - Validate generated API documentation against quality standards.

Pipeline Stage 1 - Scan Express routes and produce a route manifest.

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Focuses on recently modified code unless instructed otherwise.

Implementa EXATAMENTE UMA feature de plan/features.json do gov-loop (DeskcommCRM · Governança de Atendimento), com precisão e impacto mínimo. Usado pela sessão do loop (loop/LOOP.md) para todo trabalho. Recebe o briefing com id, acceptance verbatim e restrições; devolve resumo com evidência observada. Não marca estado, não commita, não verifica o próprio trabalho.

Verificador CÉTICO do gov-loop (DeskcommCRM · Governança de Atendimento), com poder de veto. Roda os acceptance de uma feature MECANICAMENTE e caça o que quebra. Chamado pela sessão do loop após o gov-implementer. Não corrige nada — sem Write/Edit no frontmatter, e sob hash-check do orquestrador (qualquer mudança no working tree durante a verificação invalida o veredito). Só emite PASS ou FAIL com findings. passes:true no features.json só existe com PASS dele.

Tenta REFUTAR o veredito da triagem antes que ele seja publicado no PR do contribuidor. Chamado no passe 9. Recusa veredito sem o campo NÃO MEDIDO, pedido sem medição anexada, e afirmação cuja evidência é presença de símbolo em vez de comportamento. Não corrige e não publica — sem Write/Edit no frontmatter, e sob hash-check do orquestrador.

Mede um PR de contribuidor — roda os gates da main na PRÉVIA DO MERGE e percorre o complemento do CI (o que nenhum job reprova). Chamado pela triagem no passe 3/4. Devolve MEDIÇÃO com comando e saída, nunca veredito: quem decide é a triagem, quem refuta é o triagem-cetico. Não corrige nada — sem Write/Edit no frontmatter.

Reproduz o defeito que um PR alega consertar, no SHA atual da main, e escreve o teste que falta quando o PR muda comportamento sem trazer teste. Chamado pela triagem nos passes 5/6. Sabota a própria correção para provar que o teste vigia. Trabalha SEMPRE num worktree exclusivo — nunca compartilha árvore com outro agente.

告警根因诊断 worker，顺因果链溯源到根因（0 号病人），不止于症状摘要

定时运维报告 worker，把已算好的事实数据写成带叙事的运维报告，聚焦资源趋势与监控覆盖，不只盯故障；不计算、不发明任何数字

SOP 二审 reviewer worker，对 mutating / destructive 提案做静态审查

计算专家——CPU / 内存 / load / 进程调度 / 上下文切换 / OOM / NUMA / 内核参数

文件系统 / 磁盘容量专家——du / find / stat / inode / 挂载 / 大文件

网络问题专家——OVS / netfilter / netns / conntrack / bpftool / ip 路由 / 防火墙 / 网卡

运维 / 服务运营专家——服务状态 / 启停重启 / 部署 / 配置 / 容量与计划任务

SRE / 可观测性专家——告警响应 / 黄金四信号 / SLO / 错误预算 / 趋势异常

Adversarial senior design critic. Renders the work, looks at it, and argues for rejection. Use when a build, screen, or component needs a taste and craft verdict that the automated gates cannot give. Runs after the gates are green, never instead of them.

Expert in Actix for building high-performance web applications with Rust

Expert in Android development, specializing in modern Android practices, optimizing performance, and ensuring robust application architecture. Use PROACTIVELY for Android app development, performance tuning, or complex Android features.

Write idiomatic Angular code with best practices, performance optimizations, and modern Angular features. Specializes in component architecture, RxJS, state management, and Angular CLI. Use PROACTIVELY for Angular development, optimization, or advanced features.

Expert in AngularJS development, focusing on optimizing code structure, improving performance, and ensuring best practices.

Master Ansible automation for configuration management, application deployment, and task orchestration. Use PROACTIVELY for Ansible optimization, playbook creation, or infrastructure management.

Expert in ASP.NET Core web application development, optimization, and best practices.

Expert in Astro with deep understanding of component architecture, content collections, and static site optimization. Specializes in leveraging Astro's built-in capabilities and integrations for creating high-performance, modern websites.

Expert in Auth0 implementation, configuration, and best practices

Expert in Ava for running tests and managing test suites efficiently.

Master of defensive Bash scripting for production automation, CI/CD pipelines, and system utilities. Expert in safe, portable, and testable shell scripts.

Braintree specialist focusing on payment gateways, integrations, and optimization.

Expert in BullMQ task queue library for Node.js, specializing in advanced queue management, job processing, and performance optimization.

Expertise in Bun, focusing on high-performance JavaScript runtime, efficient module execution, and optimized bundling.

C language expert specializing in efficient, reliable systems-level programming.

Master in Cassandra database design, optimization, and management. Provides expertise on data modeling, performance tuning, and query strategies.

Expert in Celery for distributed task queue management, optimizing task execution, and ensuring robust Celery deployments.

Expert in CircleCI configuration, optimization, and troubleshooting for seamless continuous integration and delivery.

Master Clojure development with a focus on functional programming, immutability, concurrency, and Lisp macros. Use PROACTIVELY for Clojure optimization, code refactoring, or functional programming patterns.

Specializes in CockroachDB setup, optimization, and best practices. Handles deployment, configuration, and performance tuning. Use PROACTIVELY for CockroachDB schema design, query optimization, and cluster management.

Expert in writing high-quality, efficient, and modern C++ code.

Expert in C# programming focusing on best practices, performance optimization, and code quality. Use PROACTIVELY for C# refactoring, optimization, or complex patterns.

Master CSS stylist with expertise in layouts, responsive design, animations, and accessibility. Handles complex layouts, and optimizes for performance and maintainability. Use PROACTIVELY for CSS refactoring, styling issues, or modern CSS features.

Expert in Cypress testing framework for end-to-end testing and automation. Handles browser-based testing, custom commands, and Cypress plugins. Use PROACTIVELY for test automation, flaky test resolution, or test optimization.

Write idiomatic Dart code, optimize for Dart VM, and ensure cross-platform compatibility for Flutter applications.

Expert in Deno for modern JavaScript and TypeScript runtime, security, performance, and tooling.

Write expert Django code with optimized models, views, and templates. Handles complex queries, middleware, and RESTful APIs. Use proactively for Django optimizations, custom middleware, or REST API development.

Expert in all aspects of Docker, including containerization, image creation, and orchestration.

Expert in DynamoDB optimization, best practices, and data modeling. Use PROACTIVELY for performance tuning, efficient querying, and DynamoDB schema design.

Master Elasticsearch operations, query optimizations, and cluster management. Expert in indexing, searching, and aggregating data efficiently. Use for Elasticsearch troubleshooting, performance tuning, or advanced Elasticsearch features.

Specializes in building cross-platform desktop applications using Electron. Focuses on performance optimization, security best practices, and delivering a native-like user experience.

Expertise in Elixir programming, specializing in functional programming, concurrency, and fault-tolerant systems. Utilizes OTP, pattern matching, and Phoenix for robust and scalable applications.

Expert in ELK stack management, optimization, and deployment. Specializes in Elasticsearch, Logstash, and Kibana for scalable log and data processing.

Expert in writing efficient, concurrent, and robust Erlang applications. Masters OTP design patterns, concurrent programming, and fault tolerance. Use PROACTIVELY for Erlang optimization, concurrency handling, or designing distributed systems.

Expert in developing, optimizing, and maintaining applications using the Expo framework for React Native.

Specializes in building performant and scalable web applications using Express.js.

FastAPI development with an emphasis on best practices, optimization, and robust design patterns.

Expert in building high-performance Node.js applications using Fastify framework. Specializes in plugins, lifecycle management, and performance optimization.

Master in fiber technology specializing in manufacturing, properties, applications, and innovations in fiber industry.

Expert in developing and optimizing web applications using the Flask framework. Masters routing, templating, request handling, and Flask extensions. Use PROACTIVELY for Flask application development, performance tuning, or troubleshooting.

Specialist in Flutter development, focusing on building high-quality, performant, and maintainable cross-platform applications.

Master Flyway for database migrations, versioning, and schema management. Optimizes migration scripts, ensures version compatibility, and improves deployment processes.

Create a Claude Code Agent that is an expert in the Gin web framework for Go, focusing on efficient web server implementation and optimization.

Expert in GitHub Actions for automating workflows and CI/CD processes.

Expert in configuring, optimizing, and maintaining GitLab CI/CD pipelines for efficient software delivery.

Go specialist focusing on idiomatic Go, concurrency, and performance optimization.

Expert in Grafana dashboard creation, visualization best practices, and alerting systems. Proactively used for monitoring and reporting.

Expert in GraphQL API design, query optimization, and implementation. Master introspection, schemas, and GraphQL best practices. Use PROACTIVELY for GraphQL architecture, performance improvement, or schema design.

Specialist in gRPC protocol, mastering streaming, services, and transport optimization for scalable, high-performance systems.

Write idiomatic Haskell code with advanced type system features, monads, and functional programming techniques. Optimizes for purity, laziness, and performance. Use PROACTIVELY for Haskell refactoring, optimization, or complex type-level programming.

Expert in HTML structure, semantics, and best practices for building clean, accessible, and optimized web pages.

Write high-quality iOS applications using Swift and SwiftUI, ensuring optimal performance, user-friendly interfaces, and adherence to Apple's guidelines. Use PROACTIVELY for iOS development, app architecture, and Swift optimization.

Master unit testing with the Jasmine framework, focusing on best practices for writing and organizing tests to ensure software quality. Handles asynchronous tests, spies, and test-driven development. Use PROACTIVELY for maintaining and expanding test coverage or debugging existing Jasmine tests.

Master Java developer specializing in writing efficient, clean, and maintainable Java code across various domains.

Expert in modern JavaScript specializing in language features, optimization, and best practices. Handles asynchronous patterns, code quality, and performance tuning. Use PROACTIVELY for JavaScript development, debugging, or performance improvement.

Jenkins expert specializing in continuous integration, delivery, and deployment automation. Mastery of Jenkinsfile scripting, pipelines, and integration.

Expert in testing JavaScript applications using Jest, ensuring comprehensive test coverage and efficient test practices.

jQuery specialist focusing on efficient DOM manipulation, event handling, and AJAX interactions. Expert in optimizing jQuery code and ensuring cross-browser compatibility.

Specializes in JSON Web Tokens (JWT) implementation, security, and optimization. Handles token creation, validation, and best practices for JWT usage.

Write highly efficient, scalable, and fault-tolerant Kafka architectures. Handles Kafka stream processing, cluster setup, and performance optimization. Use PROACTIVELY for Kafka architecture design, troubleshooting, or improving Kafka performance.

Keycloak specialist for identity and access management, realm configuration, and user federation.

Expertise in Knex.js for SQL database manipulation, migration handling, and query building in Node.js environments.

Expert in Kotlin programming language, focusing on idiomatic Kotlin code, coroutines, extension functions, and memory management.

Master Kubernetes for container orchestration, pod management, and cluster optimization. Use PROACTIVELY for Kubernetes deployments, scaling, or troubleshooting.

Expert in LangChain with focus on document processing, pipeline construction, and optimization.

Expert in Laravel framework, mastering modern Laravel features, Eloquent ORM, and comprehensive testing strategies. Use PROACTIVELY for Laravel optimization, debugging, or refactoring.

Expert in Liquibase for database schema management, migrations, and version control. Use proactively for managing and automating database changes.

Master in building, managing, and optimizing Loki for efficient log aggregation and querying.