> ## 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](https://docs.methodfi.com/reference/simulations/overview.md) now supports simulating Card Brand subscription behaviors.

**[Simulate Card Brand API](https://docs.methodfi.com/reference/simulations/card-brands/create.md)**

* 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.

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


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