List Message Batches changedapi/beta/messages/batches/list
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14 Aug 2026
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Recorded edits20to this page, all time
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134134- `"anthropic-workspace-id": optional string`
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136 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
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138 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.
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136140## Returns
137141
138142- `data: array of BetaMessageBatch`
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