This page describes and visualizes processes which are essential for users interacting with swap.coffee DEX. Keep in mind that in order to make things easier to understand, many aspects of the visualizations have been simplified.

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Vault Creation

If you are interested in adding new asset to the swap.coffee DEX, firstly you must create a Vault for it. As shown below, you must send a special message to the Factory and wait until it deploys a Vault for you. If you are creating a Vault for jetton, make sure it goes through activation process as described here. You can check whether Vault is active by calling is_active get-method on it. If it is not, please contact us via Telegram @swap.coffee DEV Chat. Our recommendation for gas is 0.05 TON. Excesses won’t be returned. Vault Creation

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Pool Creation

After you ensured that Vaults for both of the assets you want to create pool for exist (or you created them as well), it is time to create the Pool. Unlike many other DEXes, it is not possible in swap.coffee DEX protocol to create new Pool without providing it with initial liquidity. Therefore, in order to create a new Pool, you must send two messages: one to pool’s first asset Vault, and second to pool’s second asset Vault. After they both reach their destinations, an inter-contract communication will be initialized that will lead to new Pool creation. Keep in mind that pools with AMM strategies other than Constant Product may be created by DEX administration only. If you’re interested in creation of such a pool, please contact us via Telegram @swap.coffee DEV Chat. Our recommendation for gas is 0.1 TON for each message. Excesses will be returned. If you’re using notifications, more gas may be needed. Pool Creation

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Liquidity Provisioning

Similarly to Pools creation, liquidity provisioning has been developed as an interaction with two corresponding Vaults. Our recommendation for gas is 0.1 TON for each message. Excesses will be returned. If you’re using notifications, more gas may be needed. Liquidity Provisioning

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Liquidity Withdrawal

Whenever you provide swap.coffee DEX pools with liquidity, you get LP (Liquidity Provisioning) tokens in return. Those tokens correspond to a Jetton Standard in which Pool serves as a Jetton Master contract. Thereby, in order to get funds back, all you need to do is to burn LP tokens you currently own. Also, our LP jetton wallets support custom_payload on burn so that users may specify withdrawal liquidity parameters to secure the operation. You can read more about it in TL-B schemes section. Liquidity Withdrawal

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Swap

swap.coffee DEX supports direct swaps (which involve only one Pool in an exchange), multi-hop swaps (when multiple Pools are being involved by performing swaps after each other) and even multi-dex swaps (thankfully to custom payloads support via our notification system). As stated previously, visualizations have been simplified: in particular, all Vaults, despite their asset-type accordance, are shown as just a simple regular Vault. In real world, the actual message you send to the Vault to initiate swap depends on your initial asset type. In a similar way some other (inter-contract and outgoing) messages may also differ. Our recommendation for gas is 0.1 TON for the transaction itself plus 0.05 TON for every additional swap step after the first one. So, for example, if you’re performing a direct swap, our recommendation is 0.1 TON, but if your swap route consists of 3 steps (A -> B -> C -> D), then our recommendation is 0.1 + 0.05 * 2 = 0.2 TON. Actual usage should be much lower and all the excesses will be returned. If you’re using notifications, more gas may be needed.

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Direct

Direct Swap

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With multi-hops

Multi-Hop Swap