Commit 158b2f4

The `agent.as_tool` function is a convenience method to make it easy to turn an agent into a tool. It supports common runtime options such as `max_turns`, `run_config`, `hooks`, `previous_response_id`, `conversation_id`, `session`, and `needs_approval`. It also supports structured input with `parameters`, `input_builder`, and `include_input_schema`.

The state options configure the nested agent run started by the tool call; the parent run's conversation state is not inherited automatically. To share client-managed history between the parent and nested runs, explicitly pass the same `session` to both. As with `Runner.run`, choose one state strategy for the nested run: a client-managed `session`, or server-managed continuation through `previous_response_id` or `conversation_id`.