Cross Chain

This document will guide developers on how to integrate our service into their applications to facilitate querying the best route from token1 on Chain A to token2 on Chain B and assembling transactions.

Installation

To interact with SDK, we recommend installing through the npm package

Version

ES Version

Node Version

npm install @mapprotocol/routekits

Initialize

During initialization, two nodes are required: router and common, as well as a set of developer-private API keys and secret, which we need to obtain.

import { Client } from '@maplabs/routekits';

const initClient = () => {
    const endpoint = {
        routes:"https://...",
        common:"https://...",
    }
    //for test
    const apikey = '3d30ba954f8f2c9...20e27';
    const secret = 'ce34985d95c985b...c4baf0fc4fe012d0a865be3349da'
    const client = new Client({routes,common},{apikey,secret})
    return client;
}

const client = initClient();

Integration Steps

• To query route transaction data, the routes node needs to be set during initialization.

1.Query Supported Chain Info

Use the getChains function to query the list of all supported chains by this service. You will receive a list of blockchains' information.

const response = await client.getChains();

Note: the chain info list may change over time as new chains are added or removed from the Router's support, please request this endpoint to get the latest supported chain info.

2. Query Best Routes

Use the getRoutes function to query the best routes from token1 on Chain A to token2 on Chain B. These routes are sorted by totalAmountOut of token2 in descending order.

E.g. find the best swap route from 1 ETH on Ethereum to USDT on BSC with 1% slippage and test as the entrance.

const response = await client.getRoutes({...})

3. Assemble Transaction Data Based on Selected Route

Use the getOrders function to assemble transaction data based on the selected route hash from the getRoutes response.

E.g. assemble the transaction data based on the route hash 0x632f11788f1dc471afe15......6339d65fe03ad27a6b4daa75dc0ba with the slippage of 1% and the sender address Address1..... and the receiver address Address2..... .

const response = await client.getOrders({...})

Query

• To query detail data, the common node needs to be set during initialization.

1. Transaction Detail

Use getTransaction function to retrieve the details of successfully sent transactions by using the transaction hash from the source chain.

const response = await client.getTransaction({...})

2. Transaction List

Use getTransactions function to retrieve a list of successfully sent transactions from the wallet address on the source chain.

const response = await client.getTransactions({...})

Finally

Congratulations! You have successfully used the SDK to complete the transaction and query the transaction data.