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swap

This section contains SDK example for performing swap in DEX

In this section, to illustrate all three possible types of a swap, we will do following exchange chain

swap 1 TON to TesREED (ton to jetton swap)
swap TesREED to TestBlue (jetton to jetton swap)
swap TestBlue back to TON (jetton to ton swap)

Swap TON to jetton

import { TonClient, toNano } from "@ton/ton";
import { DEX, pTON } from "@ston-fi/sdk";

const client = new TonClient({
  endpoint: "https://testnet.toncenter.com/api/v2/jsonRPC",
});

const router = client.open(
  DEX.v2_1.Router.create(
    "kQALh-JBBIKK7gr0o4AVf9JZnEsFndqO0qTCyT-D-yBsWk0v" // CPI Router v2.1.0
  )
);

const proxyTon = pTON.v2_1.create(
  "kQACS30DNoUQ7NfApPvzh7eBmSZ9L4ygJ-lkNWtba8TQT-Px" // pTON v2.1.0
);

// swap 1 TON to TestRED but not less than 1 nano TestRED
const txParams = await router.getSwapTonToJettonTxParams({
  userWalletAddress: "", // ! replace with your address
  proxyTon: proxyTon,
  offerAmount: toNano("1"),
  askJettonAddress: "kQDLvsZol3juZyOAVG8tWsJntOxeEZWEaWCbbSjYakQpuYN5", // TestRED
  minAskAmount: "1",
  queryId: 12345,
});

To execute the transaction, you need to send a transaction with these parameters to the blockchain. This code will be different based on the wallet you are using to send the tx from, so please check our doc section about transaction sending guide with examples for different libraries.

Swap jetton to jetton

import { TonClient, toNano } from "@ton/ton";
import { DEX, pTON } from "@ston-fi/sdk";

const client = new TonClient({
  endpoint: "https://testnet.toncenter.com/api/v2/jsonRPC",
});

const router = client.open(
  DEX.v2_1.Router.create(
    "kQALh-JBBIKK7gr0o4AVf9JZnEsFndqO0qTCyT-D-yBsWk0v" // CPI Router v2.1.0
  )
);

// swap 1 TesREED to TestBlue but not less than 1 nano TestBlue
const txParams = await router.getSwapJettonToJettonTxParams({
  userWalletAddress: "", // ! replace with your address
  offerJettonAddress: "kQDLvsZol3juZyOAVG8tWsJntOxeEZWEaWCbbSjYakQpuYN5", // TesREED
  offerAmount: toNano("1"),
  askJettonAddress: "kQB_TOJSB7q3-Jm1O8s0jKFtqLElZDPjATs5uJGsujcjznq3", // TestBlue
  minAskAmount: "1",
  queryId: 12345,
});

Swap jetton to TON

import { TonClient, toNano } from "@ton/ton";
import { DEX, pTON } from "@ston-fi/sdk";

const client = new TonClient({
  endpoint: "https://testnet.toncenter.com/api/v2/jsonRPC",
});

const router = client.open(
  DEX.v2_1.Router.create(
    "kQALh-JBBIKK7gr0o4AVf9JZnEsFndqO0qTCyT-D-yBsWk0v" // CPI Router v2.1.0
  )
);

const proxyTon = pTON.v2_1.create(
  "kQACS30DNoUQ7NfApPvzh7eBmSZ9L4ygJ-lkNWtba8TQT-Px" // pTON v2.1.0
);

// swap 1 TestRED to TON but not less than 1 nano TON
const txParams = await router.getSwapJettonToTonTxParams({
  userWalletAddress: "", // ! replace with your address
  offerJettonAddress: "kQDLvsZol3juZyOAVG8tWsJntOxeEZWEaWCbbSjYakQpuYN5", // TestRED
  offerAmount: toNano("1"),
  minAskAmount: "1",
  proxyTon,
  queryId: 12345,
});