/ Claude Code v2.1.205

The doctor:fix slash-command shorthand has been removed. Use /doctor instead — it now performs the same comprehensive checks and applies fixes after confirmation.

The old /doctor description ("Diagnose and verify your Claude Code installation and settings") has been replaced. The command is now a full repair tool, not a passive display.

References to "run /doctor" in MCP error messages have been replaced with "run claude doctor" (for settings/install issues) or "run /mcp" / "run /plugin" for server-specific problems.

How sure we are

One source agreesOne thing we can check says the same as this entry.

Anthropic's release notes agree/doctor is now a full setup checkup that can diagnose and fix issues; /checkup is its alias

See this entry in the whole of v2.1.205 →

The build it came inv2.1.205

8 Jul 2026 · 18 entries, this one is #18.

Either side of it

v2.1.204Older
v2.1.206Newer

Open the release →

Names in this entry

clidoctor
claude doctor now lists each sandbox credential-masking problem separately with a specific fix.
slash/doctor
Skill. 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, and checks for a newer version on your release channel. Deduplicates local CLAUDE.md files against checked-in ones, trims checked-in CLAUDE.md files by cutting content Claude could derive from the codebase, and migrates the always-loaded guidance that remains into skills and nested CLAUDE.md files that load on demand. Also offers to make auto mode your default and to pre-approve 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. Run /doctor prompt-audit to have Claude audit your CLAUDE.md files, skills, and other configuration for outdated or conflicting instructions instead of running the checkup. The prompt-audit subcommand requires Claude Code v2.1.283 or later. 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
slash/mcp
Manage MCP server connections and OAuth authentication. Run with no argument to open the interactive list, pass reconnect <server> to reconnect one disconnected server, or pass enable/disable with a server name or all to change connection state without opening the dialog. Also available in non-interactive mode (-p), where running it with no argument prints a text summary of server status instead of opening the list; requires Claude Code v2.1.205 or later
slash/plugin
Manage Claude Code plugins. Run with no argument to open the plugin menu, or pass a subcommand such as list, install, enable, or disable to act directly. Claude Code can activate a plugin during the install; the install summary tells you whether it did or whether to run /reload-plugins

Anthropic's note

Upstream's own release notes for v2.1.205 name something this entry names, so the two are probably about the same change. Probably: the pairing is made on a shared name rather than on the words around it.

/doctor is now a full setup checkup that can diagnose and fix issues; /checkup is its alias

Is this right?