First request changedmanage-claude/usage-cost-api
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14 Aug 2026
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### Why does the usage report show a service account that I didn’t create?
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325325API usage from playground in the Claude Console (and from the legacy Anthropic Workbench before it) is not associated with an API key, so `api_key_id` is `null` even when grouping by that dimension.
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327### Why does the usage report show a service account that I didn’t create?
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329Usage from some [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) sessions is reported under an Anthropic-managed service account (`svac_...`). It isn’t listed with the service accounts that you create. See [Find session usage across your organization](https://platform.claude.com/docs/en/managed-agents/session-observability#find-session-usage-across-your-organization).
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327331### How is the default workspace represented?
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329333Usage and costs attributed to the default workspace have a `null` value for `workspace_id`.
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