Slash command
Set or view the default environment for cloud agents spawned from Claude Code sessions.
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Rewind code and/or conversation to a checkpoint. As of v2.1.191, restore context from before /clear ran. Aliases: /checkpoint, /undo.
diagnostics
Show session cost, plan usage limits, and activity stats. Includes breakdown by skill, subagent, plugin, and MCP server on paid plans.
code-review
Review changed code for cleanup opportunities and apply the fixes. Four review agents run in parallel covering reuse, simplification, efficiency, and abstraction level.
session-management
Start a new conversation with empty context. Previous session stays in /resume; use /rewind (v2.1.191+) to undo a clear in-session. Aliases: /reset, /new.
parallel-agents
View and manage background work in the current session. Stops from the tasks panel are permanent as of v2.1.191.
planning
Research preview: generate a few editable UI artboards for a feature before you build it, then have Claude implement the one you pick.