What
When the /usage slash command runs, the synthetic assistant message that delivers the result can now carry a structured usage_report object, in addition to the existing markdown text. It includes session totals, plan usage rows, and extra-usage spend, and sits alongside the existing context_usage and local_command_run fields on the message.
Why
This lets remote clients render usage information as a proper card or widget instead of having to parse it back out of markdown text.
Names in the bundle/usage
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on First request touched a line naming /usage after this was published.
For complete parameter details and response schemas, see the [Claude Code Analytics API reference](https://platform.claude.com/docs/en/api/beta/organization/usage_report/retrieve_claude_code).manage-claude/claude-code-analytics-api see the edit
Confirmed since
Anthropic's documentation has since written up /usage, on Claude Code changelog.
* Fixed error hints in Claude Desktop sessions to suggest slash commands like `/usage-credits` instead of CLI flags that cannot be used therechangelog see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up /usage, on Claude Code changelog.