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

# Claude Code

> This is a lightweight guide to walk you through the installation of Claude Code, an AI-powered coding environment by Anthropic.

Claude Code is an AI-powered coding environment that integrates Anthropic's Claude for fast code generation, refactoring, and explanation.
It brings conversational AI directly into your development workflow while working with your local files.

<Info>
  Agent Responses on this page are illustrative. Exact phrasing from your AI
  model may vary depending on the model, settings, and repository context.
</Info>

<Steps>
  <Step title="Download & install">
    * Download Claude Code from the **[Claude Code installation page](https://claude.ai/claude-code/install)**
    * Run the installer
    * Once installed, open Claude Code
    * Open your project folder

    <Warning>
      Claude may read files you open or reference to provide context for assistance. Avoid storing API keys, credentials, or other sensitive material in your project, and rotate any exposed secrets.
    </Warning>
  </Step>

  <Step title="Hello Claude Code!">
    Start your first Claude chat with a simple, non-destructive query:

    1. Open a new chat in Claude Code
    2. In your new chat, try a quick repository overview:

    ```text theme={"dark"}
    Explain this repository and list the top-level folders.
    ```

    **Agent Response:**

    <img src="https://mintcdn.com/chkk/jVz5fXAMivd3Hr6E/images/ai/claude-code-installation-init-response.png?fit=max&auto=format&n=jVz5fXAMivd3Hr6E&q=85&s=7aeea13a2f661d4b42fcd4db35d6ae14" alt="Claude Code Agent Response" width="3024" height="868" data-path="images/ai/claude-code-installation-init-response.png" />
  </Step>

  <Step title="Claude Code Basics">
    In Claude Code, you can streamline everyday coding tasks with a few core concepts:

    1. **Projects & Context:** Open a project folder so Claude can read the files you reference and provide grounded assistance.
    2. **Chats:** Use chats to ask questions, generate or refactor code, and review suggested changes before applying them.
    3. **Models:** Choose an available Claude model that fits your task. Higher‑capability models help with complex refactors; lighter models respond faster for quick iterations.
    4. **MCP Tools:** Connect external tools and data sources via MCP for richer, task‑specific context.
    5. **CLI:** Use the integrated terminal to run the Claude Code CLI for scripted flows and automation.

    <Tip>
      Explore **[Claude Code CLI Reference](https://docs.anthropic.com/en/docs/claude-code/cli-reference)** to learn available commands, and refer to product docs for current model options and guidance.
    </Tip>
  </Step>

  <Step title="Claude Code MCP Support">
    Claude Code supports the **Model Context Protocol (MCP)**, allowing it to connect to external tools and data sources for richer, task‑specific context.

    Chkk’s **Upgrade Agent** integrates via the **Upgrade Context MCP server** to deliver **Minimal Relevant Context** (MRC) for safe Infrastructure‑as‑Code (IaC) upgrades. See the [Upgrade Agent guide](/ai/upgrade-agent).
  </Step>
</Steps>

<Card title="Quickstart - Upgrade Agent" icon="window" color="#F7941D" href="/overview/quickstart-upgrade-agent" horizontal={true}>
  See how Claude Code + Chkk Upgrade Agent can automatically generate ready‑to‑merge PRs to upgrade hundreds of Cloud Native Projects safely and at scale.
</Card>