Metadata class to be used in Annotated types to provide information about a given type. For example: class MyParams(TypedDict): acco

This is a legacy class as it will be replaced by `APIResponse` and `AsyncAPIResponse` in the `_response.py` file in the next major release.

Raised when an API response has a status code of 4xx or 5xx.

In certain situations you need to be able to represent a case where a default value has to be explicitly removed and `None` is not an appropriate

Provides the core interface to iterate over an asynchronous stream response.

A sentinel singleton class used to distinguish omitted keyword arguments from those passed in with the value None (which may have different b

Stores the necessary information to build the request to retrieve the next page. Either `url` or `params` must be set.

Provides the core interface to iterate over a synchronous stream response.

Attempted to read or stream content, but the content has already been streamed. This can happen if you use a method like `.iter_lines()`

A decoder for [JSON Lines](https://jsonlines.org) format. This class provides an async iterator over a byte-iterator that parses each JSON Line

Wrapper over AsyncMessageStream that is returned by `.stream()` so that an async context manager can be used without `await`ing the original c

Context manager for ensuring that a request is not made until it is entered and that the response will always be closed when the context manag

Wrapper over BetaAsyncMessageStream that is returned by `.stream()` so that an async context manager can be used without `await`ing the origin

Wrapper over MessageStream that is returned by `.stream()`. ```py with client.beta.messages.stream(...) as stream: for chunk in strea