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

# Introduction

> OpenAPI specification for API Endpoints in OpenLIT

<CardGroup cols={2}>
  <Card title="Prompt Hub API" icon="message" href="/latest/openlit/developer-resources/api-reference/endpoint/prompt-hub/get" />

  <Card title="Vault API" icon="vault" href="/latest/openlit/developer-resources/api-reference/endpoint/vault/get" />

  <Card title="Rule Engine API" icon="sliders" href="/latest/openlit/developer-resources/api-reference/endpoint/rule-engine/evaluate" />
</CardGroup>

## Authentication

All API endpoints are authenticated using Authetication Header.

```yaml theme={null}
Authorization: Bearer <api-key>
```