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

# Introduction

## Authentication

All API endpoints require authentication using a Bearer token in the `Authorization` header and an account identifier in the `X-Account-ID` header.

```bash theme={null}
curl --location 'https://api.us.lexful.app/v1/organizations' \
--header 'X-Account-ID: {YOUR_ACCOUNT_ID}' \
--header 'Authorization: Bearer {TOKEN}'
```

To generate a Bearer token, use the `X-Account-ID`, API Key ID, and Secret from the `APIs` section in `Account Settings` with the following call:

```bash theme={null}
curl --location 'https://api.us.lexful.app/v1/auth/token' \
--header 'X-Account-Id: {YOUR_ACCOUNT_ID}' \
--header 'Content-Type: application/json' \
--data '{
    "id": "{YOUR_API_KEY_ID}",
    "secret": "{YOUR_API_KEY_SECRET}"
}'

```