@alphafi/alphalend-sdk - v1.1.2
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    @alphafi/alphalend-sdk - v1.1.2

    Documentation

    AlphaLend JavaScript SDK

    AlphaLend SDK for JavaScript/TypeScript applications built on the Sui blockchain. This SDK provides a comprehensive interface to interact with the AlphaLend lending protocol.

    • Supply assets as collateral
    • Borrow assets against your collateral
    • Repay borrowed assets
    • Withdraw collateral
    • Claim rewards
    • Liquidate unhealthy positions
    • Query protocol metrics and market data
    • Track user portfolios and positions
    npm install @alphafi/alphalend-sdk

    import { SuiClient } from "@mysten/sui/client";
    import { AlphalendClient } from "alphalend-sdk";

    // Create a SUI client
    const suiClient = new SuiClient({
      url: "https://rpc.mainnet.sui.io",
    });

    // Create AlphaLend client instance
    const alphalendClient = new AlphalendClient("mainnet", suiClient);

    import { Transaction } from "@mysten/sui/transactions";

    // Create a transaction
    const tx = new Transaction();

    // Update price information for assets from Pyth oracle
    await alphalendClient.updatePrices(tx, [
      "0x2::sui::SUI",
      "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC",
      // Add other coin types as needed
    ]);

    // Set gas budget and execute the transaction
    const wallet = await import("@mysten/wallet-kit");
    tx.setGasBudget(100_000_000);
    await wallet.signAndExecuteTransaction(tx);

    import { Transaction } from "@mysten/sui/transactions";

    // Supply tokens as collateral
    const supplyParams = {
      marketId: "1", // Market ID to supply to
      amount: 1000000000n, // Amount in lowest denomination (in mists)
      coinType: "0x2::sui::SUI", // Coin type to supply
      positionCapId: "0xYOUR_POSITION_CAP_ID", // Optional: your position capability
      address: "0xYOUR_ADDRESS", // Address of the user supplying collateral
    };

    // Create supply transaction
    const supplyTx = await alphalendClient.supply(supplyParams);

    // Set gas budget and execute the transaction
    const wallet = await import("@mysten/wallet-kit");
    await wallet.signAndExecuteTransaction(supplyTx);

    import { Transaction } from "@mysten/sui/transactions";

    // Borrow against your collateral
    const borrowParams = {
      marketId: "2", // Market ID to borrow from
      amount: 500000000n, // Amount to borrow (in mists)
      coinType:
        "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC", // Coin type to borrow
      positionCapId: "0xYOUR_POSITION_CAP_ID", // Your position capability
      address: "0xYOUR_ADDRESS", // Address of the user
      priceUpdateCoinTypes: [
        "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC",
        "0x2::sui::SUI",
      ], // Coin types to update prices for
    };

    // Create borrow transaction
    const borrowTx = await alphalendClient.borrow(borrowParams);

    // Execute the transaction
    await wallet.signAndExecuteTransaction(borrowTx);

    import { Transaction } from "@mysten/sui/transactions";

    // Repay borrowed assets
    const repayParams = {
      marketId: "2", // Market ID where debt exists
      amount: 500000000n, // Amount to repay (in mists)
      coinType:
        "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC", // Coin type to repay
      positionCapId: "0xYOUR_POSITION_CAP_ID", // Your position capability
      address: "0xYOUR_ADDRESS", // Address of the user repaying the debt
    };

    // Create repay transaction
    const repayTx = await alphalendClient.repay(repayParams);

    // Execute the transaction
    await wallet.signAndExecuteTransaction(repayTx);

    import { Transaction } from "@mysten/sui/transactions";
    import { MAX_U64 } from "alphalend-sdk";

    // Withdraw collateral (partial amount)
    const withdrawParams = {
      marketId: "1", // Market ID to withdraw from
      amount: 500000000n, // Amount to withdraw (in mists)
      coinType: "0x2::sui::SUI", // Coin type to withdraw
      positionCapId: "0xYOUR_POSITION_CAP_ID", // Your position capability
      address: "0xYOUR_ADDRESS", // Address of the user
      priceUpdateCoinTypes: ["0x2::sui::SUI"], // Coin types to update prices for
    };

    // To withdraw all collateral, use MAX_U64
    const withdrawAllParams = {
      marketId: "1",
      amount: MAX_U64, // Special value to withdraw all collateral
      coinType: "0x2::sui::SUI",
      positionCapId: "0xYOUR_POSITION_CAP_ID",
      address: "0xYOUR_ADDRESS",
      priceUpdateCoinTypes: ["0x2::sui::SUI"], // Coin types to update prices for
    };

    // Create withdraw transaction
    const withdrawTx = await alphalendClient.withdraw(withdrawParams);

    // Execute the transaction
    await wallet.signAndExecuteTransaction(withdrawTx);

    import { Transaction } from "@mysten/sui/transactions";

    // Claim accrued rewards
    const claimRewardsParams = {
      positionCapId: "0xYOUR_POSITION_CAP_ID", // Your position capability
      address: "0xYOUR_ADDRESS", // Address of the user claiming rewards
      claimAlpha: true, // Whether to claim and deposit Alpha token rewards
      claimAll: true, // Whether to claim and deposit all other reward tokens
    };

    // Create claim rewards transaction
    const claimRewardsTx = await alphalendClient.claimRewards(claimRewardsParams);

    // Execute the transaction
    await wallet.signAndExecuteTransaction(claimRewardsTx);

    import { Transaction } from "@mysten/sui/transactions";

    // Create a transaction
    const tx = new Transaction();

    // Get a coin to use for repayment
    const repayAmount = 500000000n;
    const repayCoin = await someFunction.getCoinForRepayment(tx, repayAmount);

    // Liquidate an unhealthy position
    const liquidateParams = {
      tx: tx, // Optional: use existing transaction
      liquidatePositionId: "0xPOSITION_ID_TO_LIQUIDATE", // Position to liquidate
      borrowMarketId: "2", // Market ID where debt is repaid
      withdrawMarketId: "1", // Market ID where collateral is seized
      repayCoin: repayCoin, // Transaction argument for repay coin
      borrowCoinType:
        "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC", // Coin type of debt
      withdrawCoinType: "0x2::sui::SUI", // Coin type of collateral to seize
      priceUpdateCoinTypes: [
        "0x5d4b302506645c37ff133b98c4b50a5ae14841659738d6d733d59d0d217a93bf::coin::USDC",
        "0x2::sui::SUI",
      ], // Coin types to update prices for
    };

    // Liquidate the position
    const [repaidCoin, seizedCoin] =
      await alphalendClient.liquidate(liquidateParams);

    // Transfer the seized collateral to the liquidator
    tx.transferObjects([seizedCoin], "0xLIQUIDATOR_ADDRESS");

    // Execute the transaction
    await wallet.signAndExecuteTransaction(tx);

    The SDK includes TypeScript definitions for all operations, making it easy to use in TypeScript projects:

    • SupplyParams: Parameters for supplying collateral

      • marketId: Market ID where collateral is being added
      • amount: Amount to supply as collateral in base units (bigint, in mists)
      • coinType: Fully qualified coin type to supply (e.g., "0x2::sui::SUI")
      • positionCapId?: Object ID of the position capability object (optional)
      • address: Address of the user supplying collateral

    • WithdrawParams: Parameters for withdrawing collateral

      • marketId: Market ID from which to withdraw
      • amount: Amount to withdraw in base units (bigint, in mists, use MAX_U64 constant to withdraw all)
      • coinType: Fully qualified coin type to withdraw (e.g., "0x2::sui::SUI")
      • positionCapId: Object ID of the position capability object
      • address: Address of the user withdrawing collateral
      • priceUpdateCoinTypes: Array of coin types to update prices for

    • BorrowParams: Parameters for borrowing assets

      • marketId: Market ID to borrow from
      • amount: Amount to borrow in base units (bigint, in mists)
      • coinType: Fully qualified coin type to borrow (e.g., "0x2::sui::SUI")
      • positionCapId: Object ID of the position capability object
      • address: Address of the user borrowing tokens
      • priceUpdateCoinTypes: Array of coin types to update prices for

    • RepayParams: Parameters for repaying borrowed assets

      • marketId: Market ID where the debt exists
      • amount: Amount to repay in base units (bigint, in mists)
      • coinType: Fully qualified coin type to repay (e.g., "0x2::sui::SUI")
      • positionCapId: Object ID of the position capability object
      • address: Address of the user repaying the debt

    • ClaimRewardsParams: Parameters for claiming rewards

      • positionCapId: Object ID of the position capability object
      • address: Address of the user claiming rewards
      • claimAlpha: Whether to claim and deposit Alpha token rewards (boolean)
      • claimAll: Whether to claim and deposit all other reward tokens (boolean)

    • LiquidateParams: Parameters for liquidating unhealthy positions

      • tx?: Optional existing transaction to build upon
      • liquidatePositionId: Object ID of the position to liquidate
      • borrowMarketId: Market ID where debt is repaid
      • withdrawMarketId: Market ID where collateral is seized
      • repayCoin: Transaction argument representing the repay coin
      • borrowCoinType: Fully qualified coin type for debt repayment
      • withdrawCoinType: Fully qualified coin type for collateral to seize
      • priceUpdateCoinTypes: Array of coin types to update prices for

    • updatePrices: Function to update price feeds

      • Parameters:
        • tx: Transaction object to add price update calls to
        • coinTypes: Array of fully qualified coin types to update prices for
    // Get all markets with their details
    const markets = await alphalendClient.getAllMarkets();

    console.log(markets);
    // Example output:
    // [
    //   {
    //     marketId: "1",
    //     coinType: "0x2::sui::SUI",
    //     decimalDigit: 9,
    //     totalSupply: new Decimal("1000000000"),
    //     totalBorrow: new Decimal("500000000"),
    //     utilizationRate: new Decimal("0.5"),
    //     supplyApr: {
    //       interestApr: new Decimal("0.04"),
    //       rewards: [
    //         { coinType: "0x..::alpha::ALPHA", rewardApr: new Decimal("0.02") }
    //       ]
    //     },
    //     borrowApr: {
    //       interestApr: new Decimal("0.1"),
    //       rewards: []
    //     },
    //     ltv: new Decimal("0.7"),
    //     liquidationThreshold: new Decimal("0.8"),
    //     availableLiquidity: new Decimal("500000000"),
    //     borrowFee: new Decimal("0.001"),
    //     allowedBorrowAmount: new Decimal("10000000000"),
    //     allowedDepositAmount: new Decimal("1000000000000"),
    //     borrowWeight: new Decimal("1"),
    //     xtokenRatio: new Decimal("1.05")
    //   },
    //   // ... more markets
    // ]

    // Get market chain data for caching and reuse
    const marketsChain = await alphalendClient.getMarketsChain();

    // Later use the cached markets with other functions

    // Use cached markets to get market data more efficiently
    const marketsChain = await alphalendClient.getMarketsChain();
    const markets = await alphalendClient.getAllMarketsWithCachedMarkets(marketsChain);

    console.log(markets);
    // Same output format as getAllMarkets but more efficient when called multiple times

    // Get protocol statistics
    const stats = await alphalendClient.getProtocolStats();

    console.log(stats);
    // Example output:
    // {
    //   totalSuppliedUsd: "1000000.00", // Total value supplied across all markets (USD)
    //   totalBorrowedUsd: "500000.00"   // Total value borrowed across all markets (USD)
    // }

    // Get user portfolio information including supplied/borrowed assets
    const userPortfolio = await alphalendClient.getUserPortfolio("0xUSER_ADDRESS");

    console.log(userPortfolio);
    // Example output:
    // [
    //   {
    //     positionId: "0x...",
    //     netWorth: new Decimal("1500.00"),
    //     dailyEarnings: new Decimal("0.82"),
    //     netApr: new Decimal("0.02"),
    //     safeBorrowLimit: new Decimal("700.00"),
    //     borrowLimitUsed: new Decimal("0.35"),
    //     liquidationThreshold: new Decimal("800.00"),
    //     totalSuppliedUsd: new Decimal("1000.00"),
    //     aggregatedSupplyApr: new Decimal("0.04"),
    //     totalBorrowedUsd: new Decimal("300.00"),
    //     aggregatedBorrowApr: new Decimal("0.08"),
    //     suppliedAmounts: new Map([
    //       [1, new Decimal("100000000000")], // Key is marketId, value is amount
    //       [3, new Decimal("50000000")]
    //     ]),
    //     borrowedAmounts: new Map([
    //       [2, new Decimal("300000000")]
    //     ]),
    //     rewardsToClaimUsd: new Decimal("5.72"),
    //     rewardsToClaim: [
    //       {
    //         coinType: "0x..::alpha::ALPHA",
    //         rewardAmount: new Decimal("10.5")
    //       }
    //     ]
    //   }
    // ]

    // Get user portfolio using cached markets for better performance
    const marketsChain = await alphalendClient.getMarketsChain();
    const userPortfolio = await alphalendClient.getUserPortfolioWithCachedMarkets("0xUSER_ADDRESS", marketsChain);

    // Same output format as getUserPortfolio but more efficient when retrieving multiple portfolios
    // or when used in combination with other market data queries

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