Guidelines for system design, project structure, and architectural decisions.

Patterns for writing clean, maintainable, and testable code.

Manages practice rules. Use when user states a preference or approach, or asks to add/modify rules for coding, architecture, tooling, or best practices.

Go conventions for hexagonal architecture, project structure, error handling, testing, and observability. Use when writing Go services.

JS/TS conventions for syntax, modules, and types. Use when writing or reviewing JavaScript/TypeScript code.

Security practices including secrets management, input validation, SSRF prevention, and production hardening. Use for security-sensitive code.

Development tooling standards including Deno runtime, JSR package registry, and configuration files. Use when setting up projects, managing dependencies, or configuring build tools.

Workflow rules for task execution, respecting user code, and git commits. Use when planning or executing development tasks.