Install the CLI, sign in, pick an environment, run your first reads, and rehearse before you spend money.
A guided first hour: install and verify, sign in, run doctor, find shippable work, ask a question in plain language, and dry-run a money path.
Rehearse every money path for free: dry-run for previews, test-label mode for real labels that are never billed, and how to see a refusal on purpose.
What the CLI is for, how direct commands and natural language relate, and how a safe first session unfolds.
Browser sign-in, device sign-in, unattended runs tokens, and API keys, plus how the CLI picks between them and how to check which environment you are on.
The JSON envelope, what goes to stdout versus stderr, and the exit codes scripts and agents branch on.
The gates between an intent and a charge: confirmations, dry-run, parallel batch authorization, owner actions, and test-label mode.