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

# Overview

> Essential resources for building with Yapily API

## Implementation Resources

Essential resources for building with Yapily API.

<CardGroup cols={2}>
  <Card title="Error Handling" icon="circle-exclamation" href="/resources/errors">
    Understand error codes, formats, and troubleshooting
  </Card>

  <Card title="Webhooks" icon="webhook" href="/tools-and-services/webhooks/introduction">
    Real-time notifications for payment and data events
  </Card>

  <Card title="Testing & Sandbox" icon="flask" href="/resources/sandbox/overview">
    Test your integration safely with sandbox credentials
  </Card>

  <Card title="Client Libraries" icon="code" href="/resources/client-libraries">
    SDKs and code samples for popular languages
  </Card>

  <Card title="Support" icon="life-ring" href="/resources/support">
    Get help from Yapily support team
  </Card>
</CardGroup>

## Additional Resources

<CardGroup cols={2}>
  <Card title="Changelog" icon="clock-rotate-left" href="/resources/changelog">
    Product updates and release notes
  </Card>

  <Card title="Glossary" icon="book" href="/getting-started/glossary">
    Open Banking terminology reference
  </Card>
</CardGroup>