MCP & Integration Commands

These commands connect Claude Code to external services and integrations — MCP servers that extend its tool set, IDE plugins, GitHub Actions, Slack, and the Claude desktop app.

/mcp

Manage Model Context Protocol server connections

/login

/logout

Sign out from your Anthropic account

/install

Install or update the Claude Code binary

/install-github-app

Set up Claude GitHub Actions

/install-slack-app

Install the Claude Slack app

/feedback

Submit feedback or report a bug

/upgrade

Upgrade to the Max plan

/mcp

Manages MCP (Model Context Protocol) server connections for the current session. Opens an interactive management panel, or accepts sub-commands for non-interactive use. Arguments: [enable | disable [server-name]] [reconnect <server-name>]
Immediate: yes

Interactive panel

Running /mcp without arguments opens the MCP management panel where you can:

See all configured servers and their connection status
Enable or disable individual servers
View error messages for failed connections
Trigger a manual reconnect

> /mcp

Sub-commands

Enable / disable servers

> /mcp enable filesystem
> /mcp disable github
> /mcp enable all
> /mcp disable all

When target is all, every non-IDE server is toggled. When a specific name is given, only that server is affected.

Reconnect a server

Force a disconnected server to reconnect:

> /mcp reconnect filesystem

Configuring MCP servers

MCP servers are declared in settings.json (user or project level). Claude Code connects to them at startup and makes their tools available under the mcp__<server>__<tool> naming convention.

stdio server
HTTP server
Multiple servers

A local server process spawned by Claude Code:

{
  "mcpServers": {
    "filesystem": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/home/user/project"],
      "env": {}
    }
  }
}

A remote server reached over HTTP:

{
  "mcpServers": {
    "myapi": {
      "type": "http",
      "url": "https://mcp.example.com/sse",
      "headers": {
        "Authorization": "Bearer ${MY_API_TOKEN}"
      }
    }
  }
}

Add as many servers as you need — each gets its own key:

{
  "mcpServers": {
    "filesystem": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/tmp"]
    },
    "github": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-github"],
      "env": {
        "GITHUB_PERSONAL_ACCESS_TOKEN": "${GITHUB_TOKEN}"
      }
    },
    "postgres": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-postgres", "${DATABASE_URL}"]
    }
  }
}

Environment variable interpolation (${VAR_NAME}) is supported in env values and in args. Variables are resolved from the shell environment at startup.

MCP server tool naming

Every tool provided by a connected MCP server is available to Claude under the name:

mcp__<server-name>__<tool-name>

For example, a server named github with a tool create_issue is invoked as mcp__github__create_issue. You can add these names to permission allow/deny rules in settings.json.

Authentication

If an MCP server requires OAuth, Claude Code will surface an authentication tool in place of the server’s real tools. Claude can call it to start the OAuth flow and return an authorization URL for the user to complete. See McpAuthTool for details.

Signs in to your Anthropic account using OAuth. After authentication, Claude Code uses your account’s API key and subscription for all requests. Arguments: none
Non-interactive: no
Disabled by: DISABLE_LOGIN_COMMAND=1 environment variable

When to use

First-time setup on a new machine.
Switching to a different Anthropic account.
After your session token has expired.

> /login

  Opening browser for authentication...
  Waiting for authorization...
  ✓ Signed in as [email protected] (Pro)

API key authentication

If you prefer to use an API key directly, set the ANTHROPIC_API_KEY environment variable instead of using /login. The /login command is disabled when this variable is set.

export ANTHROPIC_API_KEY="sk-ant-..."
claude

/logout

Signs out from the currently authenticated Anthropic account. Revokes the local session token. Arguments: none
Non-interactive: no
Disabled by: DISABLE_LOGOUT_COMMAND=1 environment variable

> /logout

  Signed out from [email protected].

After /logout, Claude Code will not be able to make API calls until you run /login again or set ANTHROPIC_API_KEY.

/install

Installs or reinstalls the Claude Code native binary to ~/.local/bin/claude. This is the self-update pathway for users who installed via npm and want to migrate to the native binary, or who need to repair a broken installation. Arguments: [--force] [--target latest|stable|<version>]

> /install

Check existing installation

Detects any existing npm-based or binary installations and reports their state.

Clean up npm installation

Removes any npm-installed versions to avoid conflicts.

Download binary

Downloads the latest (or specified) release to a temporary path.

Install to PATH

Moves the binary to ~/.local/bin/claude (macOS/Linux) or %USERPROFILE%\.local\bin\claude.exe (Windows).

Shell setup

Checks that ~/.local/bin is in $PATH and prints instructions if shell configuration needs updating.

/install-github-app

Sets up Claude GitHub Actions for a repository, allowing Claude Code to review pull requests and respond to GitHub issues automatically. Arguments: none
Availability: claude.ai subscribers and direct API users
Non-interactive: no
Disabled by: DISABLE_INSTALL_GITHUB_APP_COMMAND=1

> /install-github-app

The wizard walks you through:

GitHub OAuth — authenticate with GitHub to access the target repository.
Repository selection — choose which repository to configure.
API key setup — create or select a CLAUDE_CODE_API_KEY secret in the repository.
Workflow creation — add .github/workflows/claude.yml to the repository.
App installation — optionally install the Claude GitHub App for richer integration.

After setup, Claude Code responds to @claude mentions in pull request comments and issues.

The GitHub Actions integration uses the Anthropic API key you provide, billed against your account. It is not included in the claude.ai subscription.

/install-slack-app

Connects Claude Code to your Slack workspace, enabling you to interact with Claude directly from Slack channels. Arguments: none
Availability: claude.ai subscribers
Non-interactive: no

> /install-slack-app

Follows the Slack OAuth flow to authorize the Claude app for your workspace. After installation, mention @Claude in any Slack channel or DM to start a conversation.

/desktop

Transfers the current session to the Claude Desktop app. The conversation history is handed off and the session continues in the desktop client. Aliases: app
Availability: claude.ai subscribers, macOS and Windows (x64) only
Arguments: none

> /desktop

This command is only available on macOS and Windows (x64). It requires the Claude Desktop app to be installed. Linux is not currently supported.

/ide

Opens the IDE integration setup panel for connecting Claude Code to VS Code, JetBrains IDEs, or other supported editors. The integration enables inline diff views, permission UI, and file-level context sharing. Arguments: none

> /ide

/feedback

Opens a feedback submission dialog for sending bug reports or feature requests to Anthropic. Aliases: bug
Arguments: [report]
Non-interactive: no
Disabled on: Bedrock, Vertex, Foundry deployments; when DISABLE_FEEDBACK_COMMAND=1; when essential-traffic-only mode is active

> /feedback
> /feedback report

The report sub-command pre-selects the bug report category.

/upgrade

Opens the plan upgrade flow for claude.ai subscribers who want to move from the Pro plan to Max for higher rate limits and more Opus access. Arguments: none
Availability: claude.ai subscribers (non-enterprise)
Disabled by: DISABLE_UPGRADE_COMMAND=1

> /upgrade

If you regularly hit Opus rate limits or need longer uninterrupted sessions, /upgrade walks you through switching to the Max plan directly in the terminal.

Built-in Tools

Slash Commands

Analysis Reports

MCP & Integration Commands

/mcp

/login

/logout

/install

/install-github-app

/install-slack-app

/feedback

/upgrade

/mcp

Interactive panel

Sub-commands

Enable / disable servers

Reconnect a server

Configuring MCP servers

MCP server tool naming

Authentication

When to use

API key authentication

/logout

/install

/install-github-app

/install-slack-app

/desktop

/ide

/feedback

/upgrade

Build docs developers (and LLMs) love

Built-in Tools

Slash Commands

Analysis Reports

/mcp

/login

/logout

/install

/install-github-app

/install-slack-app

/feedback

/upgrade

​/mcp

​Interactive panel

​Sub-commands

​Enable / disable servers

​Reconnect a server

​Configuring MCP servers

​MCP server tool naming

​Authentication

​/login

​When to use

​API key authentication

​/logout

​/install

​/install-github-app

​/install-slack-app

​/desktop

​/ide

​/feedback

​/upgrade

Build docs developers (and LLMs) love

/mcp

Interactive panel

Sub-commands

Enable / disable servers

Reconnect a server

Configuring MCP servers

MCP server tool naming

Authentication

/login

When to use

API key authentication

/logout

/install

/install-github-app

/install-slack-app

/desktop

/ide

/feedback

/upgrade