Application Memswap Integration Guide

To integrate Memswap into your wallet or application take the following steps:

1. Fetching Quotes - In order to parameterize orders effectively, start by fetching a market quote by a known exchange, such as uniswap or 1inch.

2. Choosing Swap Mode - Decided based on your user’s preferences to present a specific Swap Mode or to allow flexibility for you users

3. Submitting Swaps - Construct the appropriate swap order and submit the intentful approval with the designated matchmaker, if you choose to use one.

4. Following Swap Success - Once the swap is submitted, listen for the IntentSolved event to be emitted from the memswap contract and check that the intent hash from the event is the same as the user’s submitted order

Example references for submitting intents:

ERC20: https://github.com/memswap-protocol/memswap/blob/main/scripts/intent-erc20.ts (opens in a new tab)

ERC721: https://github.com/memswap-protocol/memswap/blob/main/scripts/intent-erc721.ts (opens in a new tab)

Memswap Interface:

https://github.com/memswap-protocol/memswap-interface/blob/main/components/swap/SwapModal.tsx#L157 (opens in a new tab)

Memswap GraphQL API

For easy access to the Memswap contract data, you may choose to integrate with the Memswap GraphQL API.

API Endpoints

• Mainnet: https://memswap-backend-mainnet.up.railway.app (opens in a new tab)
• Goerli: https://memswap-backend-goerli.up.railway.app (opens in a new tab)

Below is an example query for fetching a user’s intent history:

query GetUserIntents($maker: String) {
    intents(
      where: { maker: $maker }
      orderBy: "endTime"
      orderDirection: "desc"
    ) {
      id
      isBuy
      sellToken {
        id
        isNative
        isToken
        chainId
        decimals
        symbol
        name
        address
        icon
      }
      buyToken {
        id
        isNative
        isToken
        chainId
        decimals
        symbol
        name
        address
        icon
      }
      maker
      solver
      source
      feeBps
      surplusBps
      startTime
      endTime
      isPartiallyFillable
      amount
      endAmount
      startAmountBps
      expectedAmountBps
      isCancelled
      isPreValidated
      events
      amountFilled
    }
  }