A new SDK query method mirrors the existing reloadPlugins/reloadSkills pattern for output styles: it sends a reload_output_styles control-request subtype, which is validated in the request schema and handled by the runtime's control-request switch.
The reducer that handles cross-process sync actions (mcp_reconnect, reload_plugins, reload_skills, etc.) gained a matching reload_output_styles case, so output styles can now be hot-reloaded the same way plugins and skills are.
Names in the bundlereloadOutputStyles
Documented inclaude-code/agent-sdk/typescript
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.
Confirmed since
Anthropic's documentation has since written up reloadOutputStyles, on Agent SDK reference - TypeScript.
reloadOutputStyles(): Promise<SDKControlReloadOutputStylesResponse>;agent-sdk/typescript 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 reloadOutputStyles, on Agent SDK reference - TypeScript.