yarn add kleros-api

// pay arbitration fee.
import Kleros from 'kleros-api'

const KlerosInstance = new Kleros(
  ETH_PROVIDER, // ethereum provider object
  KLEROS_STORE_URI, // uri of off chain storage e.g. https://kleros.in
  ARITRATOR_CONTRACT_ADDRESS, // address of a deployed Kleros arbitrator contract
  ARBITRABLE_CONTRACT_ADDRESS // address of a deployed arbitrable transaction contract
)

KlerosInstance.arbitrable.payArbitrationFeeByPartyA() // pay arbitration fee for an arbitrable contract

// deploy a new contract and pay the arbitration fee.
import ArbitrableTransaction from 'kleros-api/contracts/implementations/arbitrable/ArbitrableTransaction'

// deploy methods are static
const contractInstance = ArbitrableTransaction.deploy(
    "0x67a3f2BB8B4B2060875Bd6543156401B817bEd22", // users address
    0.15, // amount of ETH to escrow
    "0x0", // hash of the off chain contract
    "0x3af76ef44932695a33ba2af52018cd24a74c904f", // arbitrator address
    3600, // number of seconds until there is a timeout
    "0x0474b723bd4986808366E0DcC2E301515Aa742B4", // the other party in the contract
    "0x0", // extra data in bytes. This can be used to interact with the arbitrator contract
    ETH_PROVIDER, // provider object to be used to interact with the network
  )

const address = contractInstance.address // get the address of your newly created contract

const ArbitrableTransactionInstance = new ArbitrableTransaction(address) // instantiate instance of the api

ArbitrableTransactionInstance.payArbitrationFeeByPartyA() // pay arbitration fee