CoinIndexAgency / perp-sdk

Perpetual Protocol V2 SDK

An SDK for Perpetual Protocol V2

Setup

Install the lib

yarn add @perp/v2-sdk

Commit:

Use commitlint and commitizen to regulate commit message.

 git ci

Test:

 yarn test

Layers

• Market:

  • indexPrice
  • markPrice
  • indexTwapPrice

• Liquidity: Addable pairs for liquidity.

  • liquidityPendingFee
  • totalTokenAmountInPoolAndPendingFee
  • getMakerPositionImpermanent

• Wallet: Manages user’s assets in his/her connected web3 wallet. (e.g. MetaMask)

  • Wallet
  • DepositHistory
  • WithdrawHistory

• Vault: Manages user’s assets stored inside Perpetual Protocol.

  • deposit
  • withdraw

• ClearingHouse: Manage transactions.

  • openPosition
  • closePosition
  • addLiquidity
  • removeLiquidity

• Position:

  • Position
  • PositionDraft
  • PositionHistory
  • FundingPaymentHistory

Usage

Create a perpetualProtocol instance.

• Now we only support optimism

const perp = new PerpetualProtocol({
  chainId: 10,
  providerConfigs: [ { rpcUrl: "https://mainnet.optimism.io"}] })
await perp.init()

Open a position

• Remember to provide your singer when connecting.

For example:

Open a Long position using quoteToken.
baseToken: ETH
quoteToken: USD

const perp = new PerpetualProtocol({
  chainId: 10,
  providerConfigs: [ { rpcUrl: "https://mainnet.optimism.io"}] })
await perp.init()
await perp.connect({ signer })

const tickerSymbol =  "ETHUSD"
const slippage = new Big(0.02) // remember to transformed to Big type
const amountInput = new Big(100) // remember to transformed to Big type
const side = PositionSide.LONG
const isAmountInputBase = false // we are not using base token to open a long position here.

const newPositionDraft = perp.clearingHouse.createPositionDraft({
              tickerSymbol,
              side,
              amountInput,
              isAmountInputBase,
          })
perp.clearingHouse.openPosition(positionDraft, slippage)

Close a position

const tickerSymbol = "ETHUSD"
const position = await perp.positions.getTakerPositionByTickerSymbol(tickerSymbol)
perp.clearingHouse.closePosition(position, slippage)

Add liquidity

• Remember to provide your singer when connecting.

For example:
Use quoteToken to add liquidity.
baseToken: ETH
quoteToken: USD

const perpParam = {
  chainId: 10,
  providerConfigs: [ { rpcUrl: "https://mainnet.optimism.io"}]
}
const perp = new PerpetualProtocol(perpParam)
await perp.init()
await perp.connect({ signer })

const tickerSymbol = "ETHUSD"
const market = perp.markets.getMarket({ tickerSymbol })
const lowerTick = perp.market.getPriceToTick(lowerTickPrice)
const upperTick = perp.market.getPriceToTick(upperTickPrice)

const slippage = new Big(0.02) // remember to transformed to Big type

const rawBaseAmount = undefined
const rawQuoteAmount = new Big(100) // remember to transformed to Big type

 const liquidityDraft = perp.clearingHouse.createLiquidityDraft({
     tickerSymbol,
     rawBaseAmount,
     rawQuoteAmount,
     upperTick,
     lowerTick,
 })

 perp.clearingHouse.addLiquidity(liquidityDraft, slippage)

Close liquidity

• ratio means how much ratio you would like to remove. 1 means 100%
• Use filterFn to filter out liquidity you would like to remove.

const ratio = new Big(1) // remember to transformed to Big type
const slippage = new Big(0.02) // remember to transformed to Big type
const liquidity = perp.liquidities.getTotalLiquidities().filter(filterFn)
perp.clearingHouse.removeLiquidity(liquidity, ratio, slippage)