authentication changedmanage-claude/authentication
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128128The [Admin API](https://platform.claude.com/docs/en/manage-claude/admin-api) accepts a personal key or service account key only if the key isn't scoped to a specific workspace.
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130You can find a workspace's ID in the **ID** column of [Settings → Workspaces](https://platform.claude.com/settings/workspaces) in the Claude Console, or by calling the [List Workspaces](https://platform.claude.com/docs/en/api/admin/workspaces/list) endpoint. Neither lists the Default Workspace's ID: read it from the `anthropic-workspace-id` [response header](https://platform.claude.com/docs/en/manage-claude/workspaces#identify-the-workspace-behind-an-api-response) of any request that runs there (for example, one made with a workspace key from the Default Workspace), or from `scope.workspace_id` on such a key in [List API Keys](https://platform.claude.com/docs/en/api/admin/api_keys/list).
130You can find a workspace's ID in the **ID** column of [Settings → Workspaces](https://platform.claude.com/settings/workspaces) in the Claude Console, or by calling the [List Workspaces](https://platform.claude.com/docs/en/api/admin/workspaces/list) endpoint. List Workspaces omits the Default Workspace; its ID is in the `anthropic-workspace-id` [response header](https://platform.claude.com/docs/en/manage-claude/workspaces#identify-the-workspace-behind-an-api-response) of any request that runs there.
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132132<CodeGroup>
133133 ```bash cURL
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