While Zoe provides the means to build custom smart contracts, there is a good chance you will
want to use one that follows a commonly-used structure. Therefore, we currently provide several
pre-built example contracts that can be imported and run on Zoe. Note that none of the contracts described below are automatically deployed on-chain.
The Vault is the primary mechanism for making IST (the Agoric stable-value currency) available to participants in the economy. It does this by issuing loans against supported types of collateral. The creator of the contract can add new types of collateral. (This is expected to be under the control of on-chain governance after the initial currencies are defined when the contract starts up.)
Creates a pair of fully collateralized call spread options. They are ERTP assets and can be used as such in other contracts. This contract has two variants, which affect how invitations are created. This version is fully funded by the creator, who receives a matching pair of call spread options. They can be traded or sold separately.
Creates a pair of fully collateralized call spread options. They are ERTP assets and can be used as such in other contracts. This contract has two variants, which affect how invitations are created. In this version, the creator requests a pair of invitations. Each one lets the holder obtain one of the positions by providing a started portion of the collateral. This version is useful for a market maker who finds pairs of participants with matching interests.
A contract for giving quotes that can be exercised. The quotes are guaranteed to be exercisable because they are actually options with escrowed underlying assets.
An automated market maker with multiple liquidity pools that can trade between any pair of funded currencies. It charges a poolFee (added to the liquidity pools) and a protocolFee (set aside for the benefit of the Agoric economy). These fees are subject to change by votes controlled by and made visible by the governance system.
An auction in which the highest bidder wins and pays the second-highest bid. This version doesn't conceal the bids (an essential aspect of second price auctions). Therefore, it should not be used in production.
An example of how you might associate the ability to take an action with ownership of a particular digital asset. In this case, you can color a pixel if you own the NFT for the pixel.
