> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trynito.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Install in Codex

> Install the plugin, create a Nito account, trust the hook, and get started.

## Before You Start

* **Codex CLI** installed and working. See [Requirements](/get-started/requirements) for the minimum version.
* A **Nito account**. If you do not have one, `nito agent signup` opens the signup page once you finish step 1.

## Install

<Steps>
  <Step title="Install the nito command line tool">
    Install it globally with npm (requires Node.js 18 or newer):

    ```bash theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}}
    npm install -g nito-ai
    ```
  </Step>

  <Step title="Run setup">
    ```bash theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}}
    nito setup codex
    ```

    It keeps the plugin version-matched to your command line tool and bundles the hook that Private and Session need.
  </Step>

  <Step title="Approve access">
    Setup opens your browser. Sign in and approve.

    You may be asked twice, once for the terminal and once for the connection that powers in-chat commands. Anything you approved before is skipped.

    If the browser does not open, setup prints a URL you can visit instead.
  </Step>

  <Step title="Trust the hook">
    Codex will not run a new or changed hook until you review it, so it shows a startup notice about the Nito hook. That notice is expected. In Codex, run:

    ```text theme={"theme":{"light":"github-light","dark":"github-dark"},"languages":{"custom":["typescript","python","curl"]}}
    /hooks
    ```

    Review the Nito hook and trust it. This approves local code execution for `$nito:private` and `$nito:session`, and it is separate from your Nito sign-in rather than a second login.
  </Step>
</Steps>

That is the whole install. The plugin is ready in Codex and there is nothing further to run inside it. Go straight to [your first ask](/get-started/your-first-ask).

## What Setup Just Did

* **Installed the plugin** and pinned it to the same version as your command line tool, so the two cannot drift apart.
* **Approved access** for the terminal and for in-chat commands.
* **Logged you in**, so later private and session launches use your account without anything to reconfigure.
* **Bundled the hook** that lets `$nito:private` catch a prompt before Codex sends it anywhere. That is why the one-time trust step exists.

Codex triggers commands with a `$` rather than a `/`.

## Next

<CardGroup cols={2}>
  <Card title="Your First Private Prompt" icon="user-secret" href="/get-started/your-first-private-prompt">
    Run a prompt your harness never sends upstream.
  </Card>

  <Card title="Check Your Setup" icon="stethoscope" href="/get-started/check-your-setup">
    Confirm everything is healthy with `status` and `doctor`.
  </Card>
</CardGroup>