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

# Introduction

<div className="relative z-10 py-12 lg:py-24 max-w-3xl mx-auto">
  <h1 className="block text-4xl font-medium text-center text-gray-900 dark:text-zinc-50 tracking-tight">
    Posta API
  </h1>

  <div className="max-w-xl mx-auto mt-4 text-lg text-center text-gray-500 dark:text-zinc-400">
    The modern API platform for postal mail. Send letters, postcards, and more with a simple API call.
  </div>

  <div className="mt-12 lg:mt-16 grid sm:grid-cols-2 gap-6">
    <Card title="Quickstart" icon="rocket" href="/api-reference/introduction">
      Get up and running with Posta in minutes. Learn how to authenticate and send your first letter.
    </Card>

    <Card title="API Reference" icon="code" href="/api-reference">
      Explore the full API documentation with interactive examples and code snippets.
    </Card>

    <Card title="Assets" icon="library" href="/api-reference/assets/assets-overview">
      Create and manage reusable templates for your postal communications.
    </Card>

    <Card title="Letters" icon="mail" href="/api-reference/postal/letters/letter-schema">
      Send physical mail programmatically with tracking and delivery confirmation.
    </Card>
  </div>
</div>