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

# Applications

> Organize your projects with isolated environments and API keys

Applications hold all the configuration for a specific project, like a "Parking App" or "Events App". Each application is an isolated environment with its own settings and API keys.

## Live and Test Mode

Every application automatically gets two API keys:

* `sk_live_app_*` for production
* `sk_test_app_*` for testing

Learn more about [App Keys](/api_reference/app-keys).

## Independent Configuration

Each application has its own:

* [Webhook](/concepts/webhooks) endpoints and settings
* Message logs and analytics
* [Phone number](/concepts/phone-numbers) assignments
* Access control