---
title: Getting Started
description: Complete i18n setup for TanStack Start with SSR support
---

## Overview

TanStack Start is a full-stack React framework with excellent SSR support. Our integration provides:

- **Dynamic language discovery** - Languages are fetched from the CDN manifest
- **Server-side message loading** - No flash of untranslated content
- **Middleware-based locale detection** - From cookies, headers, or URL
- **Hydration-safe** - Consistent rendering between server and client

<Callout type="tip">
  **Integrating with AI?** Run `npx skills add better-i18n/skills` first — your agent (Cursor, Claude Code, or Windsurf) will already know the SDK patterns, CDN behavior, and key conventions. Then just ask it to set up the integration for you. [Learn more →](/mcp/agent-skill)
</Callout>

## Installation

<Tabs items={["npm", "yarn", "pnpm", "bun"]}>
  <Tab value="npm">
  ```bash
  npm install @better-i18n/use-intl use-intl
  ```
  </Tab>
  <Tab value="yarn">
  ```bash
  yarn add @better-i18n/use-intl use-intl
  ```
  </Tab>
  <Tab value="pnpm">
  ```bash
  pnpm add @better-i18n/use-intl use-intl
  ```
  </Tab>
  <Tab value="bun">
  ```bash
  bun add @better-i18n/use-intl use-intl
  ```
  </Tab>
</Tabs>

## Quick Start

Get up and running with the basic setup:

<Cards>
  <Card title="1. Setup" icon="Settings" href="/frameworks/tanstack-start/setup">
    Configuration, provider, and basic usage.
  </Card>
  <Card title="2. SSR" icon="Server" href="/frameworks/tanstack-start/ssr">
    Server-side rendering and hydration.
  </Card>
  <Card title="3. Routing" icon="Route" href="/frameworks/tanstack-start/routing">
    Path-based locale routing for SEO.
  </Card>
  <Card title="4. Middleware" icon="Shield" href="/frameworks/tanstack-start/middleware">
    Automatic locale detection.
  </Card>
</Cards>

## Features

### Dynamic Languages

Languages are automatically fetched from your CDN manifest. Add a new language in the dashboard and it appears in your app without code changes.

### SSR Support

Messages are loaded on the server and hydrated on the client:

```tsx
// Server: Loads messages in loader
loader: async ({ context }) => {
  const messages = await getMessages({ projectId: 'org/project', locale: 'en' })
  return { messages }
}

// Client: Hydrates with same messages
<BetterI18nProvider messages={messages} ... />
```

### Path-Based Routing

SEO-friendly URLs with locale prefixes:

```
/about         → Default locale (English)
/tr/about      → Turkish
/de/about      → German
```

### Middleware Detection

Automatic locale detection from:
- URL path (`/tr/about`)
- Cookies (`locale=tr`)
- Accept-Language header

## Next Steps

Start with the [Setup Guide](/frameworks/tanstack-start/setup) for step-by-step instructions.


## AI Tooling

Now that you've integrated the SDK, your AI agent can check coverage, translate keys, and publish — all without leaving your editor.

<Cards>
  <Card title="MCP Server" icon="Bot" href="/mcp/getting-started">
    Translate keys, check coverage, and publish — all from your editor via Cursor, Claude Code, or Windsurf.
  </Card>
  <Card title="Agent Skill" icon="Sparkles" href="/mcp/agent-skill">
    Permanent better-i18n knowledge for your AI agent — SDK patterns, CDN behavior, key conventions. No prompts needed each session.
  </Card>
</Cards>
