provide liquidity

This section contains SDK example for providing liquidity in DEX

Provide liquidity for a pool

Jetton/Jetton pool deposit

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

const USER_WALLET_ADDRESS = ""; // ! replace with your address
const JETTON_0_ADDRESS = "EQA2kCVNwVsil2EM2mB0SkXytxCqQjS4mttjDpnXmwG9T6bO"; // STON
const JETTON_1_ADDRESS = "EQBX6K9aXVl3nXINCyPPL86C4ONVmQ8vK360u6dykFKXpHCa"; // GEMSTON

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

const router = client.open(new DEX.v1.Router());

const txsParams = await Promise.all([
  // deposit 0.5 STON to the STON/GEMSTON pool and get at least 1 nano LP token
  router.getProvideLiquidityJettonTxParams({
    userWalletAddress: USER_WALLET_ADDRESS,
    sendTokenAddress: JETTON_0_ADDRESS,
    sendAmount: toNano("0.5"),
    otherTokenAddress: JETTON_1_ADDRESS,
    minLpOut: "1",
    queryId: 12345,
  }),
  // deposit 2 GEMSTON to the STON/GEMSTON pool and get at least 1 nano LP token
  router.getProvideLiquidityJettonTxParams({
    userWalletAddress: USER_WALLET_ADDRESS,
    sendTokenAddress: JETTON_1_ADDRESS,
    sendAmount: toNano("2.0"),
    otherTokenAddress: JETTON_0_ADDRESS,
    minLpOut: "1",
    queryId: 123456,
  }),
]);

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.

TON/Jetton pool deposit

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

const USER_WALLET_ADDRESS = ""; // ! replace with your address
const JETTON_0_ADDRESS = "EQA2kCVNwVsil2EM2mB0SkXytxCqQjS4mttjDpnXmwG9T6bO"; // STON

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

const router = client.open(new DEX.v1.Router());

const txsParams = await Promise.all([
  // deposit 1 TON to the STON/TON pool and get at least 1 nano LP token
  router.getProvideLiquidityTonTxParams({
    userWalletAddress: USER_WALLET_ADDRESS,
    proxyTon: new pTON.v1(),
    sendAmount: toNano("1"),
    otherTokenAddress: JETTON_0_ADDRESS,
    minLpOut: "1",
    queryId: 12345,
  }),
  // deposit 0.5 STON to the STON/TON pool and get at least 1 nano LP token
  router.getProvideLiquidityJettonTxParams({
    userWalletAddress: USER_WALLET_ADDRESS,
    sendTokenAddress: JETTON_0_ADDRESS,
    sendAmount: toNano("0.5"),
    otherTokenAddress: new pTON.v1().address,
    minLpOut: "1",
    queryId: 123456,
  }),
]);

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.