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

# Introduction

This documentation covers the Registry API. For product user guides, please review the [Registry documentation](/user-guides/registry/introduction).

Available registry actions will depend on your account type:

* **Public registry data**: available to all API users
* **Buyer account management**: available to Buyer account holders
* **Supplier account management**: available to Supplier account holders

## Get started

<CardGroup cols={2}>
  <Card title="Key concepts" icon="lightbulb" href="/user-guides/registry/key-registry-concepts" horizontal>
    Review key concepts used in the Registry platform
  </Card>
</CardGroup>

## Popular actions

<CardGroup cols={2}>
  <Card title="Get Issuances" icon="landmark" href="/api-reference/registry/issuances">
    Get all credits issued by Isometric
  </Card>

  <Card title="Get Projects" icon="location-dot" href="/api-reference/registry/projects">
    Get a list of all projects on Isometric's registry
  </Card>

  <Card title="Credit Balance" icon="scale-balanced" href="/api-reference/registry/create-retirement">
    Get your current balance of active and retired credits
  </Card>

  <Card title="Create Retirement" icon="stamp" href="/api-reference/registry/create-retirement">
    Retire credits in your account
  </Card>
</CardGroup>

View a reference for all available API endpoints in the menu to the left.

## Can't find what you need?

If you have further questions, please reach out to your Isometric point of contact for user guidance or with any questions, or get in touch via [support@isometric.com](mailto:support@isometric.com).