event-store-design — templates and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

cqrs-implementation — templates and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

architecture-patterns — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

Deep-dive implementation examples for DDD bounded contexts, Onion Architecture, Anti-Corruption Layers, and full project structures. Referenced from SKILL.md. Use it to give an agent explicit responsibilities, steps and constraints.

Master proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design to build maintainable, testable, and scalable systems. Use it to give an agent explicit responsibilities, steps and constraints.

REST API Best Practices captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

1. Nullable vs Non-Null : Start nullable, make non-null when guaranteed 2. Input Types : Always use input types for mutations 3. Payload Pattern : Return errors in mutation payloads 4. Pagination : Use cursor-based for infinite scroll, offset for simple cases 5. Nam. Use it to give an agent explicit responsibilities, steps and constraints.

api-design-principles — detailed patterns and worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

You MUST follow these rules exactly. Violating any of them is a failure. Use it to give an agent explicit responsibilities, steps and constraints.

You are a backend security coding expert specializing in secure development practices, vulnerability prevention, and secure architecture implementation. Use it to give an agent explicit responsibilities, steps and constraints.

1. DTCM/SRAM (Non-cacheable, fastest CPU access) - C++: attribute ((section(".dtcm.bss"))) attribute ((aligned(32))) static uint8 t buffer[512]; - Rust: [link section = ".dtcm"] [repr(C, align(32))] static mut BUFFER: [u8; 512] = [0; 512];. Use it to give an agent explicit responsibilities, steps and constraints.

You MUST follow these rules exactly. Violating any of them is a failure. Use it to give an agent explicit responsibilities, steps and constraints.

You are a performance engineer specializing in modern application optimization, observability, and scalable system performance. Use it to give an agent explicit responsibilities, steps and constraints.

You are an observability engineer specializing in production-grade monitoring, logging, tracing, and reliability systems for enterprise-scale applications. Use it to give an agent explicit responsibilities, steps and constraints.

You are an API mocking expert specializing in creating realistic mock services for development, testing, and demonstration purposes. Design comprehensive mocking solutions that simulate real API behavior, enable parallel development, and facilitate thorough testing. Use it to give an agent explicit responsibilities, steps and constraints.

fastapi-templates — detailed worked examples captures reusable agent playbook guidance for api, backend & databases. Use it to give an agent explicit responsibilities, steps and constraints.

You are a backend system architect specializing in scalable, resilient, and maintainable backend systems and APIs. Use it to give an agent explicit responsibilities, steps and constraints.

Detailed preset team configurations with task templates for common workflows. Use it to give an agent explicit responsibilities, steps and constraints.

Best practices for composing multi-agent teams, selecting team sizes, choosing agent types, and configuring display modes for Claude Code's Agent Teams feature. Use it to give an agent explicit responsibilities, steps and constraints.

Protocols for effective communication between agent teammates, including message type selection, plan approval workflows, shutdown procedures, and common anti-patterns to avoid. Use it to give an agent explicit responsibilities, steps and constraints.