> ## 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 Certify API. For product user guides, please review the [Certify documentation](/user-guides/certify/introduction).

<Info>
  Prefer the `ghg_entry*` and `ghg_entry_template*` endpoints for new integrations. The older
  `removal*` and `removal_template*` endpoints remain available as deprecated compatibility aliases.
</Info>

## Get started

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

  <Card title="Create your first GHG entry" icon="rocket" href="/api-reference/certify/your-first-ghg-entry" horizontal>
    Read a guide to creating GHG entries via API
  </Card>
</CardGroup>

## Popular actions

<CardGroup cols={2}>
  <Card title="Post Source" icon="folder" href="/api-reference/certify/post-source">
    Upload evidence for your measurement data
  </Card>

  <Card title="Post Datapoint" icon="ruler" href="/api-reference/certify/post-datapoint">
    Record a measurement input for a GHG entry
  </Card>

  <Card title="Post Component" icon="list-tree" href="/api-reference/certify/post-component">
    Create a component for a CO₂ flux in your GHG entry
  </Card>

  <Card title="Post GHG Entry" icon="circle-arrow-down" href="/api-reference/certify/post-ghg-entry">
    Create a new GHG entry to be included in your reporting statement
  </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).