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7575| `/design-login` | Authorize design-system access for `/design-sync` with your claude.ai account |
7676| `/design-sync [hint]` | **[Skill](/docs/en/skills#bundled-skills).** Convert your repo's React design system and upload it to [Claude Design](https://claude.ai/design), so designs it produces use your real components. Optionally name the design system, for example `/design-sync Acme DS`. A first-time sync verifies every component and can take a few hours on a large repo. Available on the Anthropic API; on Amazon Bedrock, Google Cloud's Agent Platform, Microsoft Foundry, and Claude Platform on AWS the underlying tool can't reach claude.ai, so the command is unavailable |
7777| `/desktop` | Continue the current session in the Claude Code Desktop app. Requires macOS or x64 Windows and a Claude subscription. Alias: `/app` |
78| `/diff` | Open an interactive diff viewer showing uncommitted changes and per-turn diffs. Use left/right arrows to switch between the current git diff and individual Claude turns, and up/down to browse files. Press Enter to open the selected file's diff, scroll it with up/down or PageUp/PageDown, and press Esc to return to the file list. Claude Code computes these diffs from raw git blob content, so diff drivers and `textconv` filters configured in `.gitattributes` or git config don't apply. Before v2.1.222, workspace-configured drivers and filters could rewrite the viewer's output. The open viewer also refreshes automatically when the repository's git state changes outside the session, such as a branch switch or commit in another terminal; the auto-refresh requires Claude Code v2.1.198 or later |
78| `/diff` | Review the changes in your working tree, including the edits Claude has made so far. See [Review changes with /diff](/docs/en/interactive-mode#review-changes-with-%2Fdiff) |
7979| `/doctor` | **[Skill](/docs/en/skills#bundled-skills).** Run a setup checkup that diagnoses issues and can fix them. Checks installation health, including duplicate or leftover installs, `PATH` problems, and unparseable settings files. Finds unused skills, MCP servers, and plugins versus their context cost, flags slow [hooks](/docs/en/hooks), and checks for a newer version on your [release channel](/docs/en/setup#configure-release-channel). Deduplicates local `CLAUDE.md` files against checked-in ones, trims checked-in [`CLAUDE.md`](/docs/en/memory#my-claude-md-is-too-large) files by cutting content Claude could derive from the codebase, and migrates the always-loaded guidance that remains into [skills](/docs/en/skills) and nested `CLAUDE.md` files that load on demand. Also offers to make [auto mode](/docs/en/permissions#permission-modes) your default and to [pre-approve](/docs/en/permissions) frequently denied read-only commands. Reports findings first and asks for confirmation before changing anything. From the terminal, `claude doctor` prints read-only installation diagnostics without starting a session. Alias: `/checkup`. The `CLAUDE.md` trim check requires Claude Code v2.1.206 or later. Before v2.1.205, `/doctor` opened a read-only diagnostics screen and pressing `f` sent the report to Claude |
8080| `/effort [level\|auto\|status]` | Set the [effort level](/docs/en/model-config#adjust-effort-level): `low` to `xhigh`, `max`, [`ultracode`](/docs/en/workflows#let-claude-decide-with-ultracode), or `auto`; `status` prints it. `max` and `ultracode` are session-only; the [`ultracode`](/docs/en/settings-reference#ultracode) key persists. Run it while Claude is responding and, once you confirm the [cache warning](/docs/en/prompt-caching#changing-effort-level), if Claude Code shows one, Claude Code applies the new level to the next request in that turn. Before v2.1.242, Claude Code decided from a feature flag it fetched from Anthropic whether to run the command mid-turn or queue it until the turn finished, and always queued it in a session that doesn't [fetch feature flags](/docs/en/env-vars#features-that-need-feature-flag-fetching), such as on a [third-party provider](/docs/en/third-party-integrations). Works in `-p` outside the [effort hold](/docs/en/model-config#adjust-effort-level) |
8181| `/exit` | Exit the CLI. In an attached [background session](/docs/en/agent-view#attach-to-a-session), this detaches and the session keeps running. Alias: `/quit` |