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Claude Code sub-agents for AI, backend, DevOps, frontend, mobile, rapid prototyping, and test work.
written by ForgeCat
Claude Code sub-agents for AI, backend, DevOps, frontend, mobile, rapid prototyping, and test work.
ForgeCatnpx forgecat install @forgecat/contains-studio_agents_engineering
| Agent | Description |
|---|---|
ai-engineer | Use this agent when implementing AI/ML features, integrating language models, building recommendation systems, or adding intelligent automation to applications. This agent specializes in practical AI implementation for rapid deployment. Examples:\n\n\nContext: Adding AI features to an app\nuser: "We need AI-powered content recommendations"\nassistant: "I'll implement a smart recommendation engine. Let me use the ai-engineer agent to build an ML pipeline that learns from user behavior."\n\nRecommendation systems require careful ML implementation and continuous learning capabilities.\n\n\n\n\nContext: Integrating language models\nuser: "Add an AI chatbot to help users navigate our app"\nassistant: "I'll integrate a conversational AI assistant. Let me use the ai-engineer agent to implement proper prompt engineering and response handling."\n\nLLM integration requires expertise in prompt design, token management, and response streaming.\n\n\n\n\nContext: Implementing computer vision features\nuser: "Users should be able to search products by taking a photo"\nassistant: "I'll implement visual search using computer vision. Let me use the ai-engineer agent to integrate image recognition and similarity matching."\n\nComputer vision features require efficient processing and accurate model selection.\n\n |
backend-architect | Use this agent when designing APIs, building server-side logic, implementing databases, or architecting scalable backend systems. This agent specializes in creating robust, secure, and performant backend services. Examples:\n\n\nContext: Designing a new API\nuser: "We need an API for our social sharing feature"\nassistant: "I'll design a RESTful API with proper authentication and rate limiting. Let me use the backend-architect agent to create a scalable backend architecture."\n\nAPI design requires careful consideration of security, scalability, and maintainability.\n\n\n\n\nContext: Database design and optimization\nuser: "Our queries are getting slow as we scale"\nassistant: "Database performance is critical at scale. I'll use the backend-architect agent to optimize queries and implement proper indexing strategies."\n\nDatabase optimization requires deep understanding of query patterns and indexing strategies.\n\n\n\n\nContext: Implementing authentication system\nuser: "Add OAuth2 login with Google and GitHub"\nassistant: "I'll implement secure OAuth2 authentication. Let me use the backend-architect agent to ensure proper token handling and security measures."\n\nAuthentication systems require careful security considerations and proper implementation.\n\n |
devops-automator | Use this agent when setting up CI/CD pipelines, configuring cloud infrastructure, implementing monitoring systems, or automating deployment processes. This agent specializes in making deployment and operations seamless for rapid development cycles. Examples:\n\n\nContext: Setting up automated deployments\nuser: "We need automatic deployments when we push to main"\nassistant: "I'll set up a complete CI/CD pipeline. Let me use the devops-automator agent to configure automated testing, building, and deployment."\n\nAutomated deployments require careful pipeline configuration and proper testing stages.\n\n\n\n\nContext: Infrastructure scaling issues\nuser: "Our app crashes when we get traffic spikes"\nassistant: "I'll implement auto-scaling and load balancing. Let me use the devops-automator agent to ensure your infrastructure handles traffic gracefully."\n\nScaling requires proper infrastructure setup with monitoring and automatic responses.\n\n\n\n\nContext: Monitoring and alerting setup\nuser: "We have no idea when things break in production"\nassistant: "Observability is crucial for rapid iteration. I'll use the devops-automator agent to set up comprehensive monitoring and alerting."\n\nProper monitoring enables fast issue detection and resolution in production.\n\n |
frontend-developer | Use this agent when building user interfaces, implementing React/Vue/Angular components, handling state management, or optimizing frontend performance. This agent excels at creating responsive, accessible, and performant web applications. Examples:\n\n\nContext: Building a new user interface\nuser: "Create a dashboard for displaying user analytics"\nassistant: "I'll build an analytics dashboard with interactive charts. Let me use the frontend-developer agent to create a responsive, data-rich interface."\n\nComplex UI components require frontend expertise for proper implementation and performance.\n\n\n\n\nContext: Fixing UI/UX issues\nuser: "The mobile navigation is broken on small screens"\nassistant: "I'll fix the responsive navigation issues. Let me use the frontend-developer agent to ensure it works perfectly across all device sizes."\n\nResponsive design issues require deep understanding of CSS and mobile-first development.\n\n\n\n\nContext: Optimizing frontend performance\nuser: "Our app feels sluggish when loading large datasets"\nassistant: "Performance optimization is crucial for user experience. I'll use the frontend-developer agent to implement virtualization and optimize rendering."\n\nFrontend performance requires expertise in React rendering, memoization, and data handling.\n\n |
mobile-app-builder | Use this agent when developing native iOS or Android applications, implementing React Native features, or optimizing mobile performance. This agent specializes in creating smooth, native-feeling mobile experiences. Examples:\n\n\nContext: Building a new mobile app\nuser: "Create a TikTok-style video feed for our app"\nassistant: "I'll build a performant video feed with smooth scrolling. Let me use the mobile-app-builder agent to implement native performance optimizations."\n\nVideo feeds require careful mobile optimization for smooth scrolling and memory management.\n\n\n\n\nContext: Implementing mobile-specific features\nuser: "Add push notifications and biometric authentication"\nassistant: "I'll implement native push notifications and Face ID/fingerprint auth. Let me use the mobile-app-builder agent to ensure proper platform integration."\n\nNative features require platform-specific implementation and proper permissions handling.\n\n\n\n\nContext: Cross-platform development\nuser: "We need this feature on both iOS and Android"\nassistant: "I'll implement it using React Native for code reuse. Let me use the mobile-app-builder agent to ensure native performance on both platforms."\n\nCross-platform development requires balancing code reuse with platform-specific optimizations.\n\n |
rapid-prototyper | Use this agent when you need to quickly create a new application prototype, MVP, or proof-of-concept within the 6-day development cycle. This agent specializes in scaffolding projects, integrating trending features, and building functional demos rapidly. Examples:\n\n\nContext: Starting a new experiment or app idea\nuser: "Create a new app that helps people overcome phone anxiety"\nassistant: "I'll help you create a phone anxiety app. Let me use the rapid-prototyper agent to scaffold this project and build an MVP."\n\nWhen starting any new project or experiment, use the rapid-prototyper to quickly set up the foundation and core features.\n\n\n\n\nContext: Need to test a trending feature or viral concept\nuser: "I saw this TikTok trend about AI avatars, can we build something around that?"\nassistant: "That's a great trending opportunity! I'll use the rapid-prototyper agent to quickly build a prototype app featuring AI avatars."\n\nFor capitalizing on trends and viral content, the rapid-prototyper can quickly create testable prototypes.\n\n\n\n\nContext: Validating a business idea with minimal investment\nuser: "We need to test if people would pay for a subscription box curation app"\nassistant: "Let's validate that idea with a quick prototype. I'll use the rapid-prototyper agent to build an MVP with basic subscription and curation features."\n\nBusiness validation requires fast prototyping to test market fit before full investment.\n\n\n\n\nContext: Creating demo apps for stakeholder presentations\nuser: "We're meeting with investors next week and need to show them our vision"\nassistant: "I'll help create a compelling demo. Let me use the rapid-prototyper agent to build a functional prototype that showcases your vision."\n\nInvestor demos and stakeholder presentations benefit from working prototypes rather than just mockups.\n\n |
test-writer-fixer | Use this agent when code changes have been made and you need to write new tests, run existing tests, analyze failures, and fix them while maintaining test integrity. This agent should be triggered proactively after code modifications to ensure comprehensive test coverage and suite health. Examples:\n\n\nContext: The user has just implemented a new feature or modified existing code.\nuser: "I've updated the user authentication logic to support OAuth"\nassistant: "I've successfully updated the authentication logic. Now let me run the test-writer-fixer agent to ensure all tests pass with these changes."\n\nSince code changes were made, use the Task tool to launch the test-writer-fixer agent to run relevant tests and fix any failures.\n\n\n\n\nContext: The user has refactored a module or changed function signatures.\nuser: "Please refactor this payment processing module to use async/await"\nassistant: "I've completed the refactoring to use async/await throughout the payment module."\n\nassistant: "Now I'll use the test-writer-fixer agent to run the tests and fix any issues caused by the refactoring."\n\nAfter refactoring code, proactively use the test-writer-fixer agent to ensure tests still pass.\n\n\n\n\nContext: The user has fixed a bug or made a critical change.\nuser: "Fix the race condition in the data synchronization service"\nassistant: "I've identified and fixed the race condition by implementing proper locking mechanisms."\n\nassistant: "Let me run the test-writer-fixer agent to verify the fix doesn't break existing functionality."\n\nAfter bug fixes, use the test-writer-fixer agent to ensure the fix works and doesn't introduce regressions.\n\n\n\n\nContext: Code lacks test coverage for critical functionality.\nuser: "Our payment processing module has no tests"\nassistant: "That's a critical gap. Let me use the test-writer-fixer agent to create comprehensive tests for the payment module including edge cases and error scenarios."\n\nCritical modules without tests are high-risk areas that need immediate test coverage.\n\n\n\n\nContext: After implementing a new feature that needs tests.\nuser: "I've added the social sharing functionality"\nassistant: "Great! The social sharing is implemented. Now let me use the test-writer-fixer agent to write tests that ensure this feature works correctly across different platforms."\n\nNew features should always include comprehensive test coverage from the start.\n\n |
| Field | Value |
|---|---|
| Author | Contains Studio |
| Original repository | https://github.com/contains-studio/agents/tree/main/engineering |
| Version | 0.0.0 |
| Original commit | a5a480c324cac64b9c569bca0b2f297d517240cb |
| License | Unknown |
| Source platform | Claude Code agents |
| Platform | Status |
|---|---|
| Claude Code | Partial |
| Cursor | Partial |
| Codex | Partial |
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forgecat
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Evaluated 7/1/2026