Best Claude Code Prompt for “Design System Architecture”

<verification>
Run the existing test suite and ensure all tests pass.
Verify that the application builds successfully without errors.
Confirm that the API correctly handles valid requests with a 200 status code and unauthorized requests with a 401 status code.
</verification>
<outcome>
Design and implement a robust system architecture for a [type of application]. This includes defining the core components, their interactions, and the overall data flow. The architecture should be scalable, maintainable, and secure, adhering to best practices for [type of application].
</outcome>
<context>
Review the existing codebase, paying close attention to `src/` directory structure and any established design patterns.
Refer to `docs/architecture_principles.md` for guidelines on maintainability and scalability.
Analyze the current implementation of [mention a specific existing component or feature] to understand the existing approach.
</context>
<constraints>
Do not introduce breaking changes to the existing public API.
Utilize the [specific framework/library, e.g., React, Node.js with Express] already in place.
Ensure all new code adheres to the established coding style and linting rules.
Prioritize security best practices, particularly concerning user authentication and data protection.
The architecture must support a minimum of [specific number, e.g., 1000] concurrent users without performance degradation.
</constraints>
<task_complexity>
Read through the relevant code first and summarize the current approach before making changes.
</task_complexity>
<git_operation>
Commit the changes to a new branch named `feature/system-architecture-[type of application]`.
</git_operation>