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

# Grain Documentation

> Everything you need to integrate and manage crypto payments with Grain

Welcome to the Grain documentation. Whether you're integrating our Payment SDK, managing transactions through the Grain Dashboard, or getting your business verified — you'll find everything you need here.

## Start building

<Columns cols={2}>
  <Card title="How Grain Works" icon="circle-info" href="/how-grain-works/overview" horizontal>
    Learn how Grain processes payments, from checkout to settlement.
  </Card>

  <Card title="Completing Onboarding" icon="rocket" href="/get-started/onboarding/kyb-requirements" horizontal>
    Prepare KYB verification, complete onboarding, and start accepting payments.
  </Card>
</Columns>

## Integrate & manage

<Columns cols={2}>
  <Card title="Payment SDK" icon="code" href="/payment-sdk/overview">
    Install, configure, and integrate the Grain Payment SDK into your application.
  </Card>

  <Card title="Grain Dashboard" icon="chart-line" href="/partner-dashboard/overview">
    Monitor transactions, track settlements, and manage your account settings.
  </Card>

  <Card title="API Reference" icon="terminal" href="/payment-sdk/api-reference/authentication">
    Explore endpoints, authentication, error codes, and rate limits.
  </Card>

  <Card title="Support & Resources" icon="life-ring" href="/support/getting-help">
    Get help, check system status, and browse the FAQ.
  </Card>
</Columns>