Claude Platform Docs

Batches

Create a Message Batch
messages.batches.create(**kwargs) -> MessageBatch
POST/v1/messages/batches

Send a batch of Message creation requests.

Retrieve a Message Batch
messages.batches.retrieve(message_batch_id, **kwargs) -> MessageBatch
GET/v1/messages/batches/{message_batch_id}

This endpoint is idempotent and can be used to poll for Message Batch completion. To access the results of a Message Batch, make a request to the results_url field in the response.

List Message Batches
messages.batches.list(**kwargs) -> Page<MessageBatch>
GET/v1/messages/batches

List all Message Batches within a Workspace. Most recently created batches are returned first.

Cancel a Message Batch
messages.batches.cancel(message_batch_id, **kwargs) -> MessageBatch
POST/v1/messages/batches/{message_batch_id}/cancel

Batches may be canceled any time before processing ends. Once cancellation is initiated, the batch enters a canceling state, at which time the system may complete any in-progress, non-interruptible requests before finalizing cancellation.

Delete a Message Batch
messages.batches.delete(message_batch_id, **kwargs) -> DeletedMessageBatch
DELETE/v1/messages/batches/{message_batch_id}
Retrieve Message Batch results
messages.batches.results_streaming(message_batch_id, **kwargs) -> JsonLStream<MessageBatchIndividualResponse>
GET/v1/messages/batches/{message_batch_id}/results

Streams the results of a Message Batch as a .jsonl file.

Models
class DeletedMessageBatch { type: :message_batch_deleted, id }
type: :message_batch_deleted

Deleted object type.

For Message Batches, this is always "message_batch_deleted".

id: String

ID of the Message Batch.

class MessageBatch { type: :message_batch, id, archived_at, 7 more }
class MessageBatchCanceledResult { type: :canceled }
type: :canceled
class MessageBatchErroredResult { type: :errored, error }
type: :errored
error: ErrorResponse { type: :error, error, request_id }
type: :error
error: ErrorObject
One of the following:
request_id: String
class MessageBatchExpiredResult { type: :expired }
type: :expired
class MessageBatchIndividualResponse { custom_id, result }

This is a single line in the response .jsonl file and does not represent the response as a whole.

custom_id: String

Developer-provided ID created for each request in a Message Batch. Useful for matching results to requests, as results may be given out of request order.

Must be unique for each request within the Message Batch.

Processing result for this request.

Contains a Message output if processing was successful, an error response if processing failed, or the reason why processing was not attempted, such as cancellation or expiration.

One of the following:
class MessageBatchRequestCounts { canceled, errored, expired, 2 more }
canceled: Integer

Number of requests in the Message Batch that have been canceled.

This is zero until processing of the entire Message Batch has ended.

errored: Integer

Number of requests in the Message Batch that encountered an error.

This is zero until processing of the entire Message Batch has ended.

expired: Integer

Number of requests in the Message Batch that have expired.

This is zero until processing of the entire Message Batch has ended.

processing: Integer

Number of requests in the Message Batch that are processing.

succeeded: Integer

Number of requests in the Message Batch that have completed successfully.

This is zero until processing of the entire Message Batch has ended.

Processing result for this request.

Contains a Message output if processing was successful, an error response if processing failed, or the reason why processing was not attempted, such as cancellation or expiration.

One of the following:
class MessageBatchSucceededResult { type: :succeeded, message }
type: :succeeded
message: Message { type: :message, id, container, 8 more }