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

# Overview

> Overview of the Knowledge Graph API, including base URL, authentication, and endpoints for curriculum, standards, and learning components.

<EarlyAccess />

The Learning Commons API provides programmatic access to Knowledge Graph data:

* [US academic standards](/knowledge-graph/datasets/us-academic-standards)
  – Relationships between state standards and Common Core State Standards (<Tooltip tip="Common Core State Standards">CCSS</Tooltip>)
* [Math Learning Components](/knowledge-graph/datasets/math-learning-components) and [ELA Learning Components](/knowledge-graph/datasets/ela-learning-components)
* [Curriculum](/knowledge-graph/schema-reference/curriculum) – Scope and sequence

## How to use the API

|                    |                                                                                                                                                                   |
| :----------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Base URL**       | `https://api.learningcommons.org/knowledge-graph/v0`                                                                                                              |
| **Authentication** | Generate an API key in the [Learning Commons Platform](https://platform.learningcommons.org/) ↗ and include it in the request header as `x-api-key: YOUR_API_KEY` |

## Related topics

<CardGroup cols={2}>
  <Card title="Standards schema reference" icon="certificate" href="/knowledge-graph/schema-reference/standards">
    Review entities, relationships, and property definitions for Standards.
  </Card>

  <Card title="Learning components schema reference" icon="puzzle-piece" href="/knowledge-graph/schema-reference/learning-components">
    Review entities, relationships, and property definitions for Learning
    Components.
  </Card>

  <Card title="Curriculum schema reference" icon="book-open" href="/knowledge-graph/schema-reference/curriculum">
    Review entities, relationships, and property definitions for Curriculum.
  </Card>
</CardGroup>