# Farm

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Note that this page has not been updated to reflect the current state of Beanstalk, but is left here as a reference.
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The Farm allows Farmers to call multiple functions in a single transaction and use assets between different functions in a composable manner, without those assets every leaving Beanstalk (thanks to [Internal Balances](https://docs.bean.money/developers/overview/internal-balances)). Internal Balances allow the `farm` function to use the output of a function in the next function call.

The Farm also provides composable Beanstalk-native interfaces for other DeFi protocols. This allows Farmers to call supported external protocols through the `farm` function and leverage Internal Balances. The current protocols that the Farm supports are:

* WETH -> wrapping and unwrapping; and
* Curve -> swapping and adding/removing liquidity.
* Pipeline -> performing an arbitrary series of actions in the EVM in a single transaction.

The Farm creates an interface to transfer ERC-20 tokens between Internal and External Balances, as well as between Farmers through the `transferToken` function.

The Farm consists of 5 facets:

* [Farm Facet](https://docs.bean.money/developers/protocol/depot/farm-facet)
* [Depot Facet](https://docs.bean.money/developers/protocol/depot/depot-facet)
* [Token Facet](https://docs.bean.money/developers/protocol/depot/token-facet)
* [Token Support Facet](https://docs.bean.money/developers/protocol/depot/token-support-facet)
* [Curve Facet](https://docs.bean.money/developers/protocol/depot/curve-facet)