Agents

State schema for the agent.

Model request information for the agent.

Use a tool calling strategy for model responses.

Use the model provider's native structured output method.

Automatically select the best strategy for structured output.

Creates an agent graph that calls tools in a loop until a stopping condition is met.

For more details on using create_agent, visit the [Agents](https://docs.langchain.com/oss/python/langchain/agent

Decorator used to dynamically create a middleware with the before_model hook.

Decorator used to dynamically create a middleware with the after_model hook.

Create middleware with wrap_model_call hook from a function.

Converts a function with handler callback into middleware that can intercept model calls, implement retry logic, handle errors, and rewr

Create middleware with wrap_tool_call hook from a function.

Async version is awrap_tool_call.

Converts a function with handler callback into middleware that can intercept tool calls, implement r

Union type for all supported response format strategies.