Dependency Injection

Use this skill when handlers need shared services, repositories, config, or request-scoped resources.

Workflow

1. Define provider functions and wrap them with Provide.
2. Register dependencies at app/router/controller/handler scope.
3. Prefer narrow scope for overrides and testability.
4. Keep service lifecycle explicit (singleton vs request-scoped behavior).

Core Pattern

from litestar import Litestar, get
from litestar.di import Provide