Create a Message Batch changedapi/messages/batches/create
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23
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14 Aug 2026
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Recorded edits22to this page, all time
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from line 23, old and new numbered
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2424- `"anthropic-user-profile-id": optional string`
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26 The user profile ID to attribute the requests in this batch to. Use when acting on behalf of a party other than your organization. Requires the `user-profiles` beta header. Applies to every request in the batch; an individual request whose `user_profile_id` body field conflicts with this header is errored.
26 The user profile ID to attribute the requests in this batch to. Use when acting on behalf of a party other than your organization. Applies to every request in the batch; an individual request whose `user_profile_id` body field conflicts with this header is errored.
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2828- `"anthropic-workspace-id": optional string`
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