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

# Revenue API

> List active revenue options for the authenticated user - GET /revenue

<Note>
  This endpoint requires authentication via API key passed as a query parameter (`api_key`).
</Note>

## Query Parameters

<ParamField query="api_key" type="string" required>
  Your SmartLead API key for authentication
</ParamField>

<RequestExample>
  ```bash cURL theme={null}
  curl -X GET "https://prospect-api.smartlead.ai/api/v1/search-email-leads/revenue?api_key=YOUR_API_KEY"
  ```
</RequestExample>

## Response Codes

<ResponseField name="200" type="Success">
  Request successful
</ResponseField>

<ResponseField name="401" type="Unauthorized">
  Unauthorized
</ResponseField>

<ResponseField name="500" type="Internal Server Error">
  Internal Server Error
</ResponseField>

<ResponseExample>
  ```json 200 - Success theme={null}
  {
    "success": true,
    "message": "Data retrieved successfully",
    "data": [
      { "id": 1, "revenue": "$1M-$10M" },
      { "id": 2, "revenue": "$10M-$50M" }
    ]
  }
  ```

  ```json 401 - Unauthorized theme={null}
  {
    "statusCode": 401,
    "success": false,
    "message": "Unauthorized",
    "error": "User not authenticated"
  }
  ```
</ResponseExample>