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[changelog] 2.1.71

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Shayan Rais
2026-03-07 14:38:08 +05:00
parent dd73807ca7
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best-practice/claude-cli-startup-flags.md
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![Last Updated](https://img.shields.io/badge/Last_Updated-Mar%2002%2C%202026-white?style=flat&labelColor=555)
Complete reference of all available command-line flags, subcommands, and environment variables when launching Claude Code from the terminal.
Reference for Claude Code startup flags, top-level subcommands, and startup environment variables when launching Claude Code from the terminal.
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## Subcommands
These are not flags but top-level subcommands run as `claude <subcommand>`:
These are top-level commands run as `claude <subcommand>`:
| Subcommand | Description |
|------------|-------------|
| `claude` | Start interactive REPL |
| `claude "query"` | Start REPL with initial prompt |
| `claude update` | Update to latest version |
| `claude mcp` | Configure MCP servers (`add`, `remove`, `list`, `get`, `enable`) |
| `claude agents` | List configured agents |
| `claude auth` | Manage Claude Code authentication |
| `claude doctor` | Run diagnostics from the command line |
| `claude install` | Install or switch Claude Code native builds |
| `claude mcp` | Configure MCP servers (`add`, `remove`, `list`, `get`, `enable`) |
| `claude plugin` | Manage Claude Code plugins |
| `claude remote-control` | Manage remote control sessions |
| `claude setup-token` | Create a long-lived token for subscription usage |
| `claude update` / `claude upgrade` | Update to the latest version |
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| `CLAUDE_CODE_TMPDIR` | Override temp directory for internal files |
| `CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD=1` | Enable additional directory CLAUDE.md loading |
| `DISABLE_AUTOUPDATER=1` | Disable auto-updates |
| `CLAUDE_CODE_EFFORT_LEVEL` | Control thinking depth: `low`, `medium`, `high` |
| `CLAUDE_CODE_EFFORT_LEVEL` | Control thinking depth — see [Settings Reference](./claude-settings.md#environment-variables-via-env) |
| `USE_BUILTIN_RIPGREP=0` | Use system ripgrep instead of built-in (Alpine Linux) |
| `CLAUDE_CODE_SIMPLE` | Enable simple mode (Bash + Edit tools only) |
| `CLAUDE_BASH_NO_LOGIN=1` | Skip login shell for BashTool |