What
Previously, when Claude finished writing a plan, it could ask "Claude has written up a plan. Would you like to review it as an artifact first?" before moving on. That step has been removed: exiting plan mode now goes straight to the confirmation prompt asking whether to execute the plan.
Why
This simplifies the plan-review flow to one fewer step, though it means the option to view the plan as a separate artifact document first is no longer offered here.
Names in the bundleExitPlanMode
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 Create custom subagents touched a line naming ExitPlanMode after this was published.
The second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built…sub-agents see the edit
Confirmed since
Anthropic's documentation has since written up ExitPlanMode, on Create custom subagents.
The second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built…sub-agents 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 ExitPlanMode, on Create custom subagents.