Claude · Schema

MessageBatch

A message batch object representing an asynchronous batch of message requests.

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Name	Type	Description
id	string	Unique identifier for the message batch.
type	string	Object type. Always "message_batch".
processing_status	string	The processing status of the batch.
request_counts	object	Tallies of requests by their status within the batch.
ended_at	string	RFC 3339 datetime when the batch ended processing.
created_at	string	RFC 3339 datetime when the batch was created.
expires_at	string	RFC 3339 datetime when the batch results will expire.
results_url	string	URL to retrieve the batch results. Available when the batch is complete.