Commands

Slash commands

Slash commands are entered within the Claude Code interactive session. They start with / and execute instantly.

CLI flags

Flags are passed when running claude from the terminal, before or after the prompt.

claude [flags] [prompt]
claude --model opus "refactor this file"
claude -p "what does this function do?" < mi_archivo.py

Available models

You can change the model with --model, /model, or in the configuration. The default value depends on your account type and provider, so the most reliable approach is to use aliases:

Keyboard shortcuts in interactive session

Example commands

Headless session in CI/CD

# Generate a PR summary in JSON
claude -p --output-format json "summarize the changes in the last commit"

# Review security of a file
claude -p "review possible vulnerabilities in src/api/auth.ts" < /dev/null

Change model for a session

claude --model opus
# You now use the Opus alias for the entire session

View installation diagnostics

# Inside Claude Code:
/doctor

# From the terminal:
claude doctor