Runtime Dependency Injection And Context Management

via “dependency injection and runtime context management”

Type-safe agent framework by Pydantic — structured outputs, dependency injection, model-agnostic.

Unique: Uses Python's inspect module to match function parameter types to registered dependencies at runtime, enabling zero-boilerplate dependency injection. RunContext flows through the entire agent execution (tools, system prompts, model calls) without explicit threading, leveraging Python's async context vars for async agents and thread-local storage for sync agents.

vs others: Simpler and more Pythonic than LangChain's RunnableConfig (which requires explicit passing through chains) and more flexible than Anthropic SDK (which has no built-in dependency injection), because dependencies are resolved by type annotation without manual registration in every function.