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

# Quick start

> Get up and running with the Forerunner API in minutes

<Steps>
  <Step title="Get your API key">
    Contact your Customer Success Manager or reach out to [engineering@withforerunner.com](mailto:engineering@withforerunner.com) to obtain your API key.
  </Step>

  <Step title="Make your first request">
    Try listing properties with a simple GET request:

    ```bash theme={null}
    curl https://app.withforerunner.com/api/v1/properties \
      -H "Authorization: Bearer YOUR_API_KEY"
    ```

    <Warning>
      If you're using an HTTP client like Postman, Insomnia, or a similar tool, remove or clear the default `User-Agent` header before sending requests. Forerunner's web application firewall (WAF) blocks common HTTP client user agents to prevent automated scraping, which can cause your requests to be rejected even with a valid API key.
    </Warning>
  </Step>

  <Step title="Explore the endpoints">
    Browse the API reference documentation to discover all available endpoints and their capabilities.
  </Step>
</Steps>

## Authentication

All API requests require authentication using your API key in the Authorization header. See the [Authentication](/developers/authentication) page for complete details.

## Response format

All API responses are returned in JSON format. Paginated endpoints return 25 results per page by default and include pagination metadata.

## Next steps

<CardGroup cols={2}>
  <Card title="Authentication" icon="key" href="/developers/authentication">
    Learn about API key authentication
  </Card>

  <Card title="API reference" icon="book-marked" href="/developers/api/overview">
    Browse the complete endpoint documentation
  </Card>

  <Card title="Webhooks" icon="webhook" href="/developers/webhooks">
    Set up real-time notifications
  </Card>

  <Card title="Error handling" icon="circle-alert" href="/developers/errors">
    Handle errors and troubleshoot issues
  </Card>
</CardGroup>