Skip to main content

Gemini CLI Setup and First Run

1. What installation actually gives you​

Gemini CLI is designed as a terminal-first agent. The setup goal is to reach a state where:

  1. the CLI launches,
  2. authentication works,
  3. the agent can read local context,
  4. the permission model is understandable.

2. Authentication is the real first-run step​

With Gemini CLI, installation is only half the work. The meaningful first decision is how the tool will authenticate:

  • user account flow,
  • API-based workflow,
  • or a more managed organizational setup.

That choice affects both developer ergonomics and company governance.

3. Practical first-run flow​

A good first-run sequence is:

  1. install the CLI,
  2. authenticate with one supported path,
  3. open a small local project,
  4. ask for one low-risk task,
  5. inspect what the agent wants to read or run.

4. Keep the first task narrow​

Use one simple coding or shell task first. That helps you understand:

  • the prompt style,
  • the permission prompts,
  • the command behavior,
  • the output style.

5. Why the first session matters​

Gemini CLI is a tool that gets more powerful as it gains access to your environment. The first session is where you establish whether that power feels understandable and safe for your team.