Retrieve a Message Batch changedapi/beta/messages/batches/retrieve
Nearest release: v2.1.280, published 20 hours after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+4added
Lines−0removed
From line
121
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits19to this page, all time
The whole hunk
from line 121, old and new numbered
/
from line 121
121121
122122- `"anthropic-workspace-id": optional string`
123123
124 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
125
126 Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.
127
124128## Returns
125129
126130- `BetaMessageBatch object`
No line in this hunk matches that.