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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Message Batches API changedbuild-with-claude/batch-processing

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447447### Tracking your batch
448448 
449The Message Batch's `processing_status` field indicates the stage of processing the batch is in. It starts as `in_progress`, then updates to `ended` once all the requests in the batch have finished processing, and results are ready. You can monitor the state of your batch by visiting the [Console](https://platform.claude.com/settings/workspaces/default/batches), or using the [retrieval endpoint](https://platform.claude.com/docs/en/api/retrieving-message-batches).
449The Message Batch's `processing_status` field indicates the stage of processing the batch is in. It starts as `in_progress`, then updates to `ended` once all the requests in the batch have finished processing, and results are ready. You can monitor the state of your batch by visiting the [Console](https://platform.claude.com/settings/workspaces/default/batches), or using the [retrieval endpoint](https://platform.claude.com/docs/en/api/messages/batches/retrieve).
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451451#### Polling for Message Batch completion
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605605### Listing all Message Batches
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607You can list all Message Batches in your Workspace using the [list endpoint](https://platform.claude.com/docs/en/api/listing-message-batches). The API supports pagination, automatically fetching additional pages as needed:
607You can list all Message Batches in your Workspace using the [list endpoint](https://platform.claude.com/docs/en/api/messages/batches/list). The API supports pagination, automatically fetching additional pages as needed:
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609609<CodeGroup>
610610 ```bash cURL
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951951### Canceling a Message Batch
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953You can cancel a Message Batch that is currently processing using the [cancel endpoint](https://platform.claude.com/docs/en/api/canceling-message-batches). Immediately after cancellation, a batch's `processing_status` will be `canceling`. You can use the same polling technique described earlier to wait until cancellation is finalized. Canceled batches end up with a status of `ended` and may contain partial results for requests that were processed before cancellation.
953You can cancel a Message Batch that is currently processing using the [cancel endpoint](https://platform.claude.com/docs/en/api/messages/batches/cancel). Immediately after cancellation, a batch's `processing_status` will be `canceling`. You can use the same polling technique described earlier to wait until cancellation is finalized. Canceled batches end up with a status of `ended` and may contain partial results for requests that were processed before cancellation.
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955955<CodeGroup>
956956 ```bash cURL
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