> **Building with AI coding agents?** If you're using an AI coding agent, install the official Scalekit plugin. It gives your agent full awareness of the Scalekit API — reducing hallucinations and enabling faster, more accurate code generation.
>
> - **Claude Code**: `/plugin marketplace add scalekit-inc/claude-code-authstack` then `/plugin install <auth-type>@scalekit-auth-stack`
> - **GitHub Copilot CLI**: `copilot plugin marketplace add scalekit-inc/github-copilot-authstack` then `copilot plugin install <auth-type>@scalekit-auth-stack`
> - **Codex**: run the bash installer, restart, then open Plugin Directory and enable `<auth-type>`
> - **Skills CLI** (Windsurf, Cline, 40+ agents): `npx skills add scalekit-inc/skills --list` then `--skill <skill-name>`
>
> `<auth-type>` / `<skill-name>`: `agent-auth`, `full-stack-auth`, `mcp-auth`, `modular-sso`, `modular-scim` — [Full setup guide](https://docs.scalekit.com/dev-kit/build-with-ai/)

---

# Build with AI

Pick the auth feature you need below. Each page gives you a ready-to-paste prompt for your coding agent — Claude Code, Cursor, GitHub Copilot CLI, or OpenCode. The agent reads your codebase, applies consistent patterns, and generates production-ready auth code in minutes.

```bash title="Step 1 — Add the marketplace (Claude REPL)" showLineNumbers=false
    /plugin marketplace add scalekit-inc/claude-code-authstack
    ```

    ```bash title="Step 2 — Install your auth plugin (Claude REPL)" showLineNumbers=false
    # options: full-stack-auth, agent-auth, mcp-auth, modular-sso, modular-scim
    /plugin install agent-auth@scalekit-auth-stack
    ```

    Now ask your agent to implement Scalekit auth in natural language.
  ```bash title="Step 1 — Install the Scalekit Auth Stack" frame="terminal" showLineNumbers=false
    curl -fsSL https://raw.githubusercontent.com/scalekit-inc/codex-authstack/main/install.sh | bash
    ```

    Step 2 — Restart Codex, open **Plugin Directory**, select **Scalekit Auth Stack**, and enable your auth plugin.

    Now ask your agent to implement Scalekit auth in natural language.
  ```bash title="Step 1 — Add the marketplace" frame="terminal" showLineNumbers=false
    copilot plugin marketplace add scalekit-inc/github-copilot-authstack
    ```

    ```bash title="Step 2 — Install your auth plugin" frame="terminal" showLineNumbers=false
    # options: full-stack-auth, agent-auth, mcp-auth, modular-sso, modular-scim
    copilot plugin install agent-auth@scalekit-auth-stack
    ```

    Now ask your agent to implement Scalekit auth in natural language.
  The Scalekit Auth Stack is pending Cursor Marketplace review. Install it locally in Cursor:

    ```bash title="Step 1 — Install the Scalekit Auth Stack" frame="terminal" showLineNumbers=false
    curl -fsSL https://raw.githubusercontent.com/scalekit-inc/cursor-authstack/main/install.sh | bash
    ```

    Step 2 — Restart Cursor, open **Settings > Cursor Settings > Plugins**, and enable your auth plugin.

    Now ask your agent to implement Scalekit auth in natural language.
  Works with OpenCode, Windsurf, Cline, Gemini CLI, Codex, and 35+ more agents via the [Vercel Skills CLI](https://vercel.com/docs/agent-resources/skills).

    ```bash title="Step 1 — Browse available skills" frame="terminal" showLineNumbers=false
    npx skills add scalekit-inc/skills --list
    ```

    ```bash title="Step 2 — Install a specific skill" frame="terminal" showLineNumbers=false
    npx skills add scalekit-inc/skills --skill adding-mcp-oauth
    ```

    Now ask your agent to implement Scalekit auth in natural language.
  <ResponsiveCardGrid columnsDesktop={3} columnsLarge={3}>
  <FoldCard
    title="Full Stack Auth"
    iconKey="fsa"
    href="/dev-kit/build-with-ai/full-stack-auth/"
    clickable={true}
  />
  <FoldCard
    title="Agent Auth"
    iconKey="bot"
    href="/dev-kit/build-with-ai/agent-auth/"
    clickable={true}
  />
  <FoldCard
    title="MCP Auth"
    iconKey="mcp"
    href="/dev-kit/build-with-ai/mcp-auth/"
    clickable={true}
  />
  <FoldCard
    title="Modular SSO"
    iconKey="sso"
    href="/dev-kit/build-with-ai/sso/"
    clickable={true}
  />
  <FoldCard
    title="Modular SCIM"
    iconKey="scim"
    href="/dev-kit/build-with-ai/scim/"
    clickable={true}
  />
</ResponsiveCardGrid>

## Documentation for AI agents

Load these files to give your agent full context about Scalekit APIs and integration patterns:

| File | Contents | When to use |
|------|----------|-------------|
| [`/llms.txt`](/llms.txt) | Structured index with routing hints per product area | Most queries — smaller context |
| [`/llms-full.txt`](/llms-full.txt) | Complete documentation for all pages | When exhaustive context is needed |
| [`sitemap-0.xml`](https://docs.scalekit.com/sitemap-0.xml) | Full URL list of all documentation pages | Crawling or indexing all pages |

---

## More Scalekit documentation

| Resource | What it contains | When to use it |
|----------|-----------------|----------------|
| [/llms.txt](/llms.txt) | Structured index with routing hints per product area | Start here — find which documentation set covers your topic before loading full content |
| [/llms-full.txt](/llms-full.txt) | Complete documentation for all Scalekit products in one file | Use when you need exhaustive context across multiple products or when the topic spans several areas |
| [sitemap-0.xml](https://docs.scalekit.com/sitemap-0.xml) | Full URL list of every documentation page | Use to discover specific page URLs you can fetch for targeted, page-level answers |