--- description: "Defines required technology choices: Postgres DB, .NET/Python/Rust backend, React/Tailwind frontend, OpenAPI for APIs" alwaysApply: true --- # Tech Stack - Prefer Postgres database, but ask user - For new backend projects: use .NET for structured enterprise/API services, Python for data/ML/scripting tasks, Rust for performance-critical components. For existing projects, use the language already established in that project. - For the frontend, use React with Tailwind css (or even plain css, if it is a simple project) - document api with OpenAPI