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

# November Updates

## Improvements

### Simulate API

The [Simulate API](/reference/simulations/overview) now supports simulating Card Brand subscription behaviors.

**[Simulate Card Brand API](/reference/simulations/card-brands/create)**

* Card Brand simulations let developers designate a card brand for an account with an active Card Brand Subscription by specifying a `brand_id`. This triggers a `card_brand.available` webhook containing the ID of the designated card brand, allowing developers to test card brand-driven workflows in the development environment.

<Warning>This API is available in the development environment only.</Warning>

For more information, visit the [Simulations API](/reference/simulations/overview) and [Card Brand API](/reference/accounts/card-brands/overview) documentation.