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useSprinterTransfers

The useSprinterTransfers hook provides a simplified interface for generating cross-chain transfer solutions and contract calls using the Sprinter Intent Engine. This hook wraps the following SDK methods:

  • getTransfer: Single-hop token transfers across chains.
  • getTransferWithHook: Single-hop token transfers combined with a contract call on the destination chain.
  • getPoolAssetOnDestination: Aggregates token balances across multiple chains into a single destination.
  • getPoolAssetOnDestinationWithHook: Aggregates token balances and performs a contract call on the destination chain.

You can trigger any of these methods via the hook to fetch a cross-chain solution.

Usage​

Example​

import { useSprinterTransfers } from "@chainsafe/sprinter-react";
import React, { useEffect } from "react";

function TransferComponent() {
  const { solution, getPoolAssetOnDestination } = useSprinterTransfers();

  useEffect(() => {
    const settings = {
      account: "0xYourAddress",
      destinationChain: 11155111, // Sepolia Testnet
      token: "USDC",
      amount: 1000000, // 1 USDC (smallest denomination)
      sourceChains: [84532, 1993], // Optional: source chains to consider
    };

    getPoolAssetOnDestination(settings); // Fetch transfer solution when the component mounts
  }, [getPoolAssetOnDestination]);

  if (solution.loading) return <div>Loading transfer solution...</div>;
  if (solution.error) return <div>Error fetching transfer solution: {solution.error}</div>;

  return <div>Transfer Solution: {JSON.stringify(solution.data)}</div>;
}

Return Value​

The useSprinterTransfers hook returns an object with the following properties:

  • solution: An object containing:

    • data: The transfer solution, or null if not yet retrieved.
    • loading: A boolean indicating if the solution is being fetched.
    • error: A string containing the error message if the fetch fails.

  • getTransfer: A function that generates a single-hop token transfer solution.

  • getTransferWithHook: A function that generates a single-hop token transfer combined with a contract call.

  • getPoolAssetOnDestination: A function that generates a solution to aggregate balances from multiple chains into a single destination.

  • getPoolAssetOnDestinationWithHook: A function that generates a solution to aggregate balances and execute a contract call on the destination chain.

Example Response​

Here’s an example of what the solution.data might look like after calling getPoolAssetOnDestination():

[
  {
    "sourceChain": 84532,
    "destinationChain": 11155111,
    "sourceTokenAddress": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "destinationTokenAddress": "0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238",
    "amount": "1000000",
    "duration": 60000,
    "fee": { "amount": "100000", "amountUSD": 0.1 },
    "gasCost": { "amount": "200000", "amountUSD": 0.02 },
    "tool": {
      "name": "Sygma",
      "logoURI": "https://sygma.com/logo.png"
    },
    "transaction": {
      "from": "0xYourAddress",
      "to": "0xBridgeContractAddress",
      "value": "0",
      "data": "0x...",
      "gasPrice": "0x...",
      "gasLimit": "0x..."
    }
  }
]

Parameters​

Each method accepts a settings parameter, which varies depending on the operation:

Each method calls the Sprinter SDK's corresponding function and returns the intent-based solution for cross-chain transfers or contract calls.