By ComposioHQ
Warns about potential security issues like command injection and XSS when editing files, and enforces structural constraints by blocking or modifying tool calls.
Modifies files
Hook triggers on file write and edit operations
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npx claudepluginhub composiohq/awesome-claude-plugins --plugin security-guidanceRigorous performance investigation workflow with baselines, profiling, and evidence-backed decisions
Streamlines pull request creation by handling the entire workflow: creating a new branch, committing changes, formatting modified files with Biome, and submitting the PR.
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<example>\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<commentary>\nAPI design requires careful consideration of security, scalability, and maintainability.\n</commentary>\n</example>\n\n<example>\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<commentary>\nDatabase optimization requires deep understanding of query patterns and indexing strategies.\n</commentary>\n</example>\n\n<example>\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<commentary>\nAuthentication systems require careful security considerations and proper implementation.\n</commentary>\n</example>
Manage auth and connect to 500+ apps using Composio. Perform real actions from Claude Code - send emails, create issues, post messages, and more.
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<example>\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<commentary>\nComplex UI components require frontend expertise for proper implementation and performance.\n</commentary>\n</example>\n\n<example>\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<commentary>\nResponsive design issues require deep understanding of CSS and mobile-first development.\n</commentary>\n</example>\n\n<example>\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<commentary>\nFrontend performance requires expertise in React rendering, memoization, and data handling.\n</commentary>\n</example>
Security reminder hook that warns about potential security issues when editing files, including command injection, XSS, and unsafe code patterns
Protect secrets and credentials from Claude Code. Blocks writes to .env files, detects API keys in shell commands, prevents hardcoded tokens, and guards service account JSON files.
Specialized security review subagent
Harness-native ECC plugin for engineering teams - 67 agents, 271 skills, 92 legacy command shims, reusable hooks, rules, MCP conventions, and operator workflows for Claude Code plus adjacent agent harnesses
Complete collection of battle-tested Claude Code configs from an Anthropic hackathon winner - agents, skills, hooks, and rules evolved over 10+ months of intensive daily use